Michigan Instruction Booklet for Insurance Companies

Instruction Booklet for Insurance Companies
4592, 2024 Michigan Business Tax Forms and Instructions for Insurance Companies
2024 MICHIGAN
Business Tax

Insurance Companies
FORMS AND INSTRUCTIONS

	 E-filing your return is easy, fast, and secure!
	
Visit Treasury’s Web site at www.MIfastfile.org for a list of e-file

resources and how to find an e-file provider.

W W W. M I FA S T F I L E . O R G
This booklet contains information on completing
a M i c h i g a n B u s i n e s s Ta x r e t u r n f o r
c a l e n d a r ye a r 2 0 2 4 .

F I LI N G D UE DATE:

ALL FILERS — MARC H 1 , 2 0 2 5

W W W. M I C H I G A N . G OV/ TA X E S
This booklet is intended as a guide to help complete your return. It does not take the place of the law.
Michigan Department of Treasury — 4592 (Rev. 01-25)

Important Information for 2024
Michigan Business Tax (MBT) Election
Only those taxpayers that have been approved to receive, have
received, or have been assigned a certificated credit that has
not yet fully been claimed or utilized may elect to be MBT
taxpayers. If a taxpayer files an MBT return for its first tax
year beginning after December 31, 2011, the taxpayer makes
the election to file and pay under the MBT until the certificated
credit and any carryforward of that credit are exhausted.
Except for taxpayers with certain qualifying brownfield
redevelopment or historical preservation certificated credits,
the election must be made for the first tax year beginning after
December 31, 2011. Once the election is made and the return
is submitted, the taxpayer may not amend the return to revoke
the election. Find a list of certificated credits in the General
Information for Standard Taxpayers in the MBT Forms and
Instructions for Standard Taxpayers (Form 4600).
If an insurance company does not have a certificated credit,
it cannot make the MBT election and is subject to the CIT
beginning January 1, 2012.

Helpful Hints for Completing an MBT Return
Estimates
If making estimated payments by Electronic Funds Transfer
(EFT), the associated vouchers are not required to be
submitted.
Amended Returns
A return cannot be amended to revoke a valid election to
remain taxable under the MBT. To amend a current or prior
year annual return, complete the Form 4588 that is applicable
for that year, check the box in the upper-right corner of the
return, and attach a separate sheet explaining the reason for
the changes. Include an amended federal return or a signed
and dated Internal Revenue Service (IRS) audit document.
Include all schedules filed with the original return, even if
not amending that schedule. Enter the figures on the amended
return as they should be. Do not include a copy of the original
return with your amended return.

Accelerated Credits
A taxpayer with a certificated credit under section 435
(Historic) or 437 (Brownfield) of the Michigan Business Tax
Act (MBTA), or any unused carryforward of such certificated
credit that may be claimed in a tax year ending after
December 31, 2011, may elect to pay the tax imposed by the
MBTA in the tax year in which that certificated credit may
be claimed in lieu of the CIT. If a person with a certificated
credit under section 435 or 437 that elects to pay the MBT is a
member of a Unitary Business Group (UBG), the Designated
Member of the UBG, and not the member, shall file a UBG
return and pay the tax, if any, under the MBTA and claim that
certificated credit.
For a tax year beginning after December 31, 2011, if a
certificate of completion, assignment certificate, or component
completion certificate is issued under section 437 to a taxpayer,
or if a certificate of completed rehabilitation, assignment

certificate, or reassignment certificate is issued under section
435 to a taxpayer, beginning on or after January 1, 2012, the
taxpayer may elect to claim an accelerated refund for 90
percent of the amount of that certificate.
If section 437 or 435 provides that payment of a credit will be
made over a period of years or limits the annual amount of a
payment, an accelerated refund may only be claimed for the
amount payable in the year claimed.
However, a taxpayer claiming the Special Consideration
Historic Preservation Credit under section 435(20) may elect to
claim an accelerated refund for the balance of the credit, but
the amount of that refund shall be equal to 86 percent of the
amount of the credit.
For more details, see the Request for Reduced Refundable
Credit Payout for the Brownfield Redevelopment Credit and
Historic Preservation Credit (Form 4889). Michigan Tax Forms
are online at www.michigan.gov/taxes. An accelerated credit
refund will be paid within 60 days after Form 4889 is filed.

Brief Overview of the CIT
The CIT takes effect January 1, 2012, and replaces the MBT,
except for certain businesses that wish to retain certain
certificated credits. Among the highlights of the CIT:
The CIT applies to all insurance companies unless the
insurance company is able to and does make the MBT election.
Taxpayers may be required to file quarterly estimated payments
as well as an annual return. Annual payments will still be
due on the prescribed date of the annual return. Estimated
payments will still be due on the prescribed due dates for
quarterly estimated returns.
IMPORTANT NOTE: Public Act 222 of 2018 amended MCL
206.635, which levied a tax on insurance companies equal
to 1.25% of gross direct premiums written on risk located or
residing in Michigan. Beginning Jan. 1, 2019, for CIT filers,
gross direct premiums attributable to qualified health insurance
premiums are taxed at a rate that may change annual. For tax
year 2024, that rate is 0.9477%. The remaining portion of the
tax base is still taxed at 1.25%. To calculate CIT tax liability
for the purpose of completing the “Schedule of Corporate
Income Tax Liability for an MBT Insurance Filer” (Form
4974) the taxpayer must complete a worksheet included in the
instructions for Form 4974.
Insurance companies may claim the Workers’ Disability
Supplemental Benefit (WDSB) Credit and certain insurance
specific credits under the CIT, if eligible.
An entity that has received, has been approved to receive, or
has been assigned certain certificated tax credits under MBT
may elect to continue to file and pay under the MBT in lieu of
the CIT. This election must be made with the annual return
filed for the first tax period beginning after 2011 for most
certificated credits.  The election is also made if a taxpayer files
a Form 4889, Claim for Accelerated Credit.

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2024 General Information for Insurance Companies
Standard Taxpayers and Financial Institutions: See the Michigan Business Tax (MBT) Instruction Booklet for Standard Taxpayers
(Form 4600) or the MBT Instruction Booklet for Financial Institutions (Form 4599) at www.michigan.gov/taxes.

This booklet is intended as a guide to help complete the MBT
return. It does not take the place of the law.

•	 MEGA Photovoltaic Technology Credit, as assignee only
(Form 4574)

Who Files an Insurance Return?

Using This Booklet

An insurance company is defined to mean an authorized
insurer as defined in sections 106 and 108 of the insurance
code of 1956, 1956 PA 218, MCL 500.106 and 500.108. Public
Act 276 of 2016 amended the insurance code effective
July 1, 2016, which now includes a health maintenance
organization (HMO) as an “insurer.” If an HMO is an
“authorized” “insurer” under the insurance code, is not
otherwise exempt from tax, and has made a valid MBT
election, that HMO is required to file an MBT insurance
return. In the case that an HMO would file as an MBT
standard taxpayer for a federal tax year that straddles PA 276’s
effective date, two short-year returns (one short-year standard
return and one insurance return) will be required for that year.

This MBT booklet includes forms and instructions for all
insurance filers. Read the General Information first. It is
recommended that taxpayers and tax preparers also briefly
review the instructions for all forms listed below. There
are both nonrefundable and refundable credits available for
insurance companies to help reduce the initial calculation of
tax. This includes a limited allowance for Single Business Tax
(SBT) credit carryforwards.

Only those taxpayers that have been approved to receive, have
received, or have been assigned a certificated credit that was
awarded but not yet fully claimed or paid prior to January 1,
2012, may elect to be MBT taxpayers. For most certificated
credits, the election must be made with the taxpayer’s first
tax year ending after December 31, 2011. The election is
irrevocable once the return is submitted to the Michigan
Department of Treasury (Treasury). If a taxpayer files an MBT
return, the taxpayer makes the election to file and pay under the
MBT until the certificated credit and any carryforward of that
credit are exhausted.

Forms listed below are available on the Web at www.michigan.
gov/taxes.

All insurance companies that hold a certificated credit or
agreement for certificated credit and wish to claim that credit
must file the Insurance Company Annual Return for Michigan
Business and Retaliatory Taxes (Form 4588).
All insurers, domestic and foreign, must submit copies of
Schedule T and the Michigan Business Page when filing this
return.

What is a Certificated Credit
Certificated credits are defined at MCL 208.1107. The
certificated credits are either nonrefundable or refundable
credits.   Below is a list of the certificated credits potentially
available to insurance companies, and the respective form used
for their calculation.
Nonrefundable Certificated Credits:
•	
•	
•	
•	

Renaissance Zone Credit (Forms 4595 and 4573)
Historic Preservation Credit (Forms 4584 and 4573)
Brownfield Redevelopment Credit (Forms 4584 and  4573)
Film Infrastructure Credit, as assignee only (Form 4573)

Refundable Certificated Credits:
•	
•	
•	
•	

2

Historic Preservation Credit (Form 4573)
Brownfield Redevelopment Credit (Forms 4584 and  4573)
MEGA Employment Tax Credit (Form 4574)
Film Production Credit, as assignee only (Form 4574)

The Michigan Association and Facilities Credit and the
Michigan Examination Fees Credit are claimed on Form 4588.
All remaining credits are claimed on the MBT Miscellaneous
Credits for Insurance Companies (Form 4596). Some credits
are calculated on additional forms, as indicated below.

Nonrefundable Credits:
•	 SBT Credit Carryforwards (calculated on the Single
Business Tax Credit Carryforwards (Form 4569)).
•	 Compensation Credit (calculated on Form 4596).
•	 Renaissance Zone Credit (calculated on the MBT
Renaissance Zone Credit Schedule (Form 4595)).
•	 Brownfield Redevelopment Credit (calculated on the MBT
Election of Refund or Carryforward of Credits (Form 4584)).
•	 Historic Preservation Credit (calculated on the Michigan
Historic Preservation Tax Credit (Form 3581)).
•	 Film Infrastructure Credit (as assignee only; Form 4596).
Refundable Credits:
•	 Michigan Economic Growth Authority (MEGA)
Employment Tax Credit (claimed on Form 4596).
•	 Workers’ Disability Supplemental Benefit (WDSB) Credit
(claimed on Form 4596).
•	 Historic Preservation Credit (calculated on Form 3581).
•	 MEGA Photovoltaic Technology Credit (as assignee only;
Form 4596).
•	 Brownfield Redevelopment Credit (calculated on Form 4584).
•	 Film Production Credit (as assignee only; Form 4596).

Overview of MBT for Insurance Companies
MBT imposes a tax on insurance companies equal to 1.25
percent of gross direct premiums written on property or risk
located in Michigan. There is no filing threshold for insurance
companies.
Direct premiums do not include:
•	 Premiums on policies not taken.
•	 Returned premiums on canceled policies.
•	 Receipts from the sale of annuities.

•	 Receipts on reinsurance premiums if the tax had been paid
on the original premiums.
•	 The first $190,000,000 of disability insurance premiums
written in Michigan other than credit insurance and
disability income insurance premiums. This exemption is
reduced by two dollars for every dollar that an insurance
company’s gross direct premiums everywhere (both within
and outside of Michigan) exceed $280,000,000.
An insurance company is subject to tax as calculated under
MBT or the retaliatory tax under Michigan Compiled Law
(MCL) 500.476a, whichever is greater. The tax imposed under
Chapter 2A of the MBT Act is in lieu of all other privilege and
franchise fees or taxes, except for real and personal property
taxes and sales and use taxes.

Required CIT Comparison
MBT liability is calculated as the higher of MBT or
hypothetical CIT liability. A taxpayer must pay the higher of
the two or take the lesser refund.
A taxpayer calculates the premiums tax of the MBT and
applies all credits, including certificated credits, deductions,
and exemptions available under the MBT. Then, as if they
were subject to the CIT, taxpayers calculate the premiums
tax under the CIT and apply deductions available under the
CIT. The hypothetical CIT liability is then reduced (not below
zero) by the amount of certificated nonrefundable credit used
to offset the MBT liability. The hypothetical CIT liability
offset by certificated nonrefundable MBT credits is further
reduced by the total amount of certificated refundable credits
claimed under the MBT liability calculation, resulting in
the taxpayers’ final hypothetical CIT liability. Taxpayers’
final MBT liability consists of the higher of the calculated
MBT and hypothetical CIT liabilities. If both MBT and
hypothetical CIT liabilities result in tax refunds (negative
liability), taxpayers are entitled to the lower refund amount.
Specific forms are provided to perform the MBT to CIT
comparison and determine the tax liability or refund.  
Michigan Schedule of Corporate Income Tax Liability for
a Michigan Business Tax Filer (Form 4946) is used for
the standard taxpayer comparison. Michigan Schedule of
Corporate Income Tax Liability for a Michigan Business
Tax Insurance Filer (Form 4974) is used for the insurance
company’s comparison. Michigan Schedule of Corporate
Income Tax Liability for a Michigan Business Tax Financial
Filer (Form 4975) is used for the financial institution’s
comparison.

Filing MBT/CIT Quarterly Tax Estimates
If estimated liability for the year is reasonably expected to
exceed $800, a taxpayer must file estimated returns. A taxpayer
may remit quarterly estimated payments by check with a
Corporate Income Tax Quarterly Return (Form 4913) or may
remit monthly or quarterly estimated payments electronically
by Electronic Funds Transfer (EFT). When payments are made
by EFT, Form 4913 is not required.
Estimated returns and payments for calendar year taxpayers
are due to Treasury by April 15, July 15, October 15, and

January 15 of the following year. Fiscal year taxpayers should
make returns and payments by the appropriate due date which
is fifteen days after the end of each fiscal quarter. The sum of
estimated payments for each quarter must always reasonably
approximate the liability for the quarter.
NOTE: Your debit transaction will be ineligible for EFT if
the bank account used for the electronic debit is funded or
otherwise associated with a foreign account to the extent that
the payment transaction would qualify as an International
ACH Transaction (IAT) under NACHA Rules. Contact your
financial institution for questions about the status of your
account. Contact the Michigan Department of Treasury’s
(Treasury) EFT Unit at 517-636-6925 for alternate payment
methods.
The estimated payment made with each quarterly return must
be computed on the actual CIT for the quarter, or 25 percent of
the estimated total liability if paying a CIT liability.
To avoid interest and penalty charges, estimated payments must
equal at least 85 percent of the total liability for the tax year
and the amount of each estimated payment must reasonably
approximate the tax liability for that quarter. If the prior
year’s tax under the MBT Act is $20,000 or less, estimated
tax may be based on the prior year’s total tax liability paid in
four equal installments. (“Four equal installments” describes
the minimum pace of payments that will satisfy this safe
harbor.) If the prior year’s tax liability was reported for a
period less than 12 months, this amount must be annualized
for purposes of both the $20,000 ceiling and calculating the
quarterly payments due under this method. Payments at a more
accelerated pace also will qualify. If the year’s tax liability is
$800 or less, estimates are not required.
NOTE: For those continuing to file MBT, reliance on the
tax liability of the prior year as a means to avoid interest and
penalty charges is only allowed if you had business activity in
Michigan in that prior year. A return must be filed to establish
the tax liability for that prior year, even if gross receipts in the
prior year were less than $350,000. In addition, if your business
was not in existence in the preceding year, no safe harbor
exists. In such a case, estimates must be based on the MBT
liability for the current year. For those filing CIT, there is no
safe harbor in this first year of CIT filing. The estimates must
equal at least 85 percent of the total liability as stated above.
Amending Estimates
If, after making payments, the estimated tax is substantially
different than originally estimated, recompute the tax and
adjust the payment in the next quarter.

Electronic Filing of MBT Returns
Michigan has an enforced MBT e-file mandate. Software
developers producing MBT tax preparation software and
computer-generated forms must support e-file for all eligible
Michigan forms that are included in their software package. All
eligible MBT returns prepared using tax preparation software
or computer-generated forms must be e-filed.
Treasury will be enforcing the MBT e-file mandate. The
enforcement includes not processing computer-generated paper

3

returns that are eligible to be e-filed. A notice will be mailed to
the taxpayer, indicating that the taxpayer’s return was not filed
in the proper form and content and must be e-filed. Payment
received with a paper return will be processed and credited to
the taxpayer’s account even when the return is not processed.
Treasury will continue to accept certain Portable Document
Format (PDF) attachments with MBT e-filed returns. A current
list of defined attachments is available in the “Michigan Tax
Preparer Handbook for Electronic Filing Programs,” which
is available on the Treasury Web site at www.MIfastfile.org
by clicking on “Tax Professionals” and then “Tax Preparer.”
Look for the handbook for the applicable tax year. Follow your
software instructions for submitting attachments with an e-filed
return.

•	 Leave lines/boxes blank if they do not apply or if the
amount is zero, unless otherwise instructed.
•	 Do not enter data in boxes filled with Xs.
•	 Do not write extra numbers, symbols, or notes on the
return, such as cents, dashes, decimal points (excluding
percentages), or dollar signs unless otherwise instructed.
Enclose any explanations on a separate sheet unless
instructed to write explanations on the return.
•	 Date format, unless otherwise specified, should be in the
following format: MM-DD-YYYY. Use dashes (-) rather
than slashes (/).
•	 Enter phone numbers using dashes (e.g., 517-555-5555); do
not use parentheses.

If the MBT return includes supporting documentation or
attachments that are not on the predefined list of attachments, the
return can still be e-filed. Follow your software instructions for
including additional attachments. The tax preparer or taxpayer
should retain file copies of all documentation or attachments.

•	 Stay within the lines when entering information in boxes.

For more information and program updates, including
exclusions from e-file, visit the e-file Web site at
www.MIfastfile.org.

•	 Percentages should be carried out four digits to the
right of the decimal point. Do not round percentages. For
example, 24.154266 percent becomes 24.1542 percent.
When converting a percentage to a decimal number, carry
numbers out six digits to the right of the decimal point. For
example, 24.154266 percent becomes 0.241542.

The taxpayer may be required to e-file its federal return. Visit
the Internal Revenue Service (IRS) Web site at www.irs.gov
for more information on federal e-file requirements and the IRS
Federal/State Modernized e-File (MeF) program.

Complete Federal Tax Forms First
Before preparing MBT returns, complete all federal tax forms.
These forms may include:
•	 Fiduciaries — U.S. Form 1041, 1065, and related Schedules
C, C-EZ, D, E, K, 4797, and 8825.
•	 Corporations — U.S. Form 1120, 1120-S, and Schedules D,
K, 851, 940, 4562, 4797, and 8825.
•	 Limited Liability Companies (LLCs) — federal forms listed
above, depending on how federal returns have been filed.
Reference these federal forms to complete Form 4588.
Copies of certain pages from these federal forms must also
be attached to the annual return filed. See the instructions for
Form 4588 for further details.

Completing Michigan Forms
Treasury captures the information from paper MBT returns
using an Intelligent Character Recognition process. If
completing a paper return, avoid unnecessary delays caused
by manual processing by following the guidelines below
so the return is processed quickly and accurately.
•	 Use black or blue ink. Do not use pencil, red ink, or felt tip
pens. Do not highlight information.
•	 Print using capital letters (UPPER CASE). Capital letters
are easier to recognize.
•	 Print numbers like this: 012345678. Do not put a slash
through the zero ( ) or seven ( 7).
•	 Fill check boxes with an [X]. Do not use a check mark [a].

4

•	 Report losses and negative amounts with a negative sign
in front of the number (do not use parentheses). For example,
a loss in the amount of $22,459 should be reported as
-22,459.

•	 Report all amounts in whole dollars. Round down
amounts of 49 cents or less. Round up amounts of 50 cents
or more. If cents are entered on the form, they will be
treated as whole dollar amounts.

Suggested Order of Analysis and Preparation of
an Insurance Company Annual Return
First, determine whether the taxpayer has  a certificated credit.  
If the insurance company taxpayer does not have a certificated
credit, it is subject to the CIT.
Complete Form 4588, lines 1 through 23. At that point, if any
miscellaneous credits will be claimed, begin with Form 4596,
which serves several important functions:
•	 Acts as a checklist for all miscellaneous credits for
insurance companies
•	 Calculates refundable credits
•	 Identifies the order in which nonrefundable credits must be
claimed
•	 Identifies the form on which each nonrefundable credit is
calculated
•	 Tracks tax liability as it is reduced by each credit in proper
order
•	 Identifies (where applicable) the point at which tax liability
reaches zero and no further nonrefundable credits may be
claimed in the current filing period.
•	 Complete Form 4596 according to its instructions. For each
applicable credit, calculate the credit as identified on the
appropriate form and bring the result back to the appropriate
line on Form 4596.
After total nonrefundable credits amount is determined on
Form 4596, line 28, carry the figure to Form 4588, line 24. Total

refundable credits amount calculated on Form 4596, line 5, is
carried to Form 4588, line 52.
Insurance companies that are foreign or alien insurers must
calculate a retaliatory tax on Form 4588, lines 30 through 46.
The retaliatory tax requires a foreign insurer to pay the same
type of obligation that a similar Michigan insurer is required to
pay in the company’s state of domicile. Domestic insurers do
not calculate a retaliatory tax.

Further General Guidance
For purposes of MBT, person means an individual, firm, bank,
financial institution, insurance company, limited partnership,
limited liability partnership, copartnership, partnership, joint
venture, association, corporation, S corporation, LLC, receiver,
estate, trust, or any other group or combination of groups acting
as a unit.
A taxpayer includes a single person or a UBG liable for tax,
interest, or penalty. A UBG must file a combined MBT return
(addressed in the “UBGs and Combined Filing” section of this
General Information).
Limited Liability Company. An LLC is classified for MBT
purposes according to its federal tax classification. The
following terms, whenever used in MBT forms, instructions,
and statute, include LLCs as indicated:
•	 S Corporation includes an LLC federally taxed as an S
Corporation, and a member of this LLC is a shareholder.
•	 C Corporation includes an LLC federally taxed as a C
Corporation, and a member of this LLC is a shareholder. A
member or other person performing duties similar to those
of an officer in a true corporation is an officer in this LLC.
NOTE: In this booklet, the term “corporation,” used without a
C or S, generally refers to both types.
Disregarded Entities: Public Act 305 was enacted into
law on December 27, 2011, to add Michigan Compiled Law
208.1512 to the MBT. This section provides that a person
that is classified as a disregarded entity for federal purposes
is classified as a disregarded entity for MBT purposes. This
means that a disregarded entity for federal tax purposes,
including a single member LLC or Q-Sub, must file as if it
were a sole proprietorship if  it is owned by an individual, or a  
branch or division if the branch or division is owned by another
business entity.

Unitary Business Groups (UBGs)
and Combined Filing
Special UBG Instructions for Insurance Companies
By definition a UBG (as defined below) can include insurance
companies, standard taxpayers, and financial institutions.
However, in some cases not all members of the UBG will be
included on the same return. All standard taxpayer members
in a UBG (except those owned by and unitary with a financial
institution) file a single combined return on the MBT Annual
Return (Form 4567). Financial institution members of a UBG
(and any standard taxpayer owned by and unitary with a
financial institution in the group) file a combined return on the
MBT Annual Return for Financial Institutions (Form 4590).

Insurance companies are not specifically excluded from the
statutory definition of a UBG, and thus may be members of a
UBG. However, the tax on authorized insurance companies
is equal to 1.25 percent of gross direct premiums written on
property or risk located or residing in Michigan. There is no
traditional apportionment for insurance companies. Thus,
even when an authorized insurance company is unitary with
another authorized insurance company, this will have no effect
in calculating the tax. As a result, a combined return is not
required and each insurance company member of a UBG will
file separately on Form 4588.
General Information About UBGs
Unitary Business Group means a group of United States
persons, other than a foreign operating entity, that satisfies the
following criteria:
One of the persons owns or controls, directly or indirectly,
more than 50 percent of the ownership interest with voting
rights (or rights comparable to voting rights) of the other United
States persons; AND
The UBG has operations that result in a flow of value between
persons included in the UBG or has operations that are
integrated with, are dependent upon, or contribute to each
other. Flow of value is determined by reviewing the totality of
facts and circumstances of business activities and operations.
United States person is defined in Internal Revenue Code (IRC)
§ 7701(a)(30). A foreign operating entity is defined by statute in
MCL 208.1109(5).
For more information on the control and relationship tests for
UBGs, see Revenue Administrative Bulletin (RAB) 2010-1,
MBT—Unitary Business Group Control Test, and RAB 20102, MBT—Unitary Business Group Relationship Tests, on the
Treasury Web site at www.michigan.gov/treasury/, under
“Reports and Legal Resources.”
Exemption Guidelines
The tax imposed and levied under the MBT Act does not apply
to an insurance company authorized under Chapter 46 or 47 of
the Insurance Code of 1956, PA 218 of 1956, MCL 500.4601 to
500.4673, and MCL 500.4701 to 500.4747.
Filing the Correct Form
A different primary return and instruction booklet are required
for standard taxpayers (Form 4567) and financial institutions
(Form 4590).

Due Dates of Annual Returns
The tax year of an insurance company is the calendar year. An
insurance company must file the annual return on or before
March 1 after the end of the tax year. The extension that is
available to the standard taxpayer under MCL 208.1505(4) is
not available to insurance companies.

Amending a Return
A taxpayer may not amend to revoke the election to remain
taxable under the MBT.  Once the taxpayer makes a valid election
to claim a certificated credit, the taxpayer must remain in the
MBT until the certificated credit and any carryforward of that
credit are exhausted. Most certificated credits must be claimed
for the taxpayer’s first tax year ending after December 31, 2011.

5

To amend a current or prior year annual return, complete Form
4588 that is applicable for that year and check the box in the
upper-right corner of the return, and attach a separate sheet
explaining the reason for the changes. Include all schedules
filed with the original return, even if not amending that
schedule. Enter the figures on the amended return as they
should be. Do not include a copy of the original return with
your amended return.
Current and past year forms are available on Treasury’s Web
site at www.michigan.gov/treasuryforms.
To amend a return to claim a refund, file within four years of the
original return’s due date. Interest will be paid beginning 45 days
after the claim is filed or the due date, whichever is later.
If amending a return to report a deficiency, penalty and interest
may apply from the due date of the original return. If any
changes are made to a federal income tax return that affect an
MBT tax base, filing an amended return is required. To avoid
penalty, file the amended return within 120 days after the final
determination by the IRS.

Computing Penalty and Interest
Annual and estimated returns filed late or without sufficient
payment of the tax due are subject to a penalty of 5 percent of
the tax due, for the first two months. Penalty increases by an
additional 5 percent per month, or fraction thereof, after the
second month, to a maximum of 25 percent.
Compute penalty and interest for underpaid estimates using
the MBT Penalty and Interest Computation for Underpaid
Estimated Tax (Form 4582). If a taxpayer prefers not to file this
form, Treasury will compute the penalty and interest and send
a bill.
The following chart shows the interest rate that applies to each
filing period. A new interest rate is set at 1 percent above the
adjusted prime rate for each six-month period.
Beginning Date

Rate

Daily Rate

January 1, 2024

9.30%

0.0002541

July 1, 2024

9.50%

0.0002596

January 1, 2025

9.47%

0.0002595

For a complete list of interest rates, see the Revenue
Administrative Bulletins on Treasury’s Web site at
www.michigan.gov/treasury/, under “Reports and Legal
Resources.”

Signing the Return
All returns must be signed and dated by the taxpayer or the
taxpayer’s authorized agent. This may be the owner, partner,
corporate officer, or association member. The corporate
officer may be the president, vice president, treasurer, assistant
treasurer, chief accounting officer, or any other corporate
officer (such as tax officer) authorized to sign the corporation’s
tax return.
If someone other than the above prepared the return, the
preparer must give his or her business address and telephone
number.

6

Print the name of the authorized signer and preparer in the
appropriate area on the return.
Assemble the returns and attachments (in sequence order)
and staple in the upper-left corner. (Do not staple a check to
the return.) In an e-filed return the preparation software will
assemble the forms and PDF attachments in the proper order
automatically.
IMPORTANT REMINDER: Failure to include all the
required forms and attachments will delay processing and may
result in reduced or denied refund or credit forward or a bill for
tax due.

Signing an e-file return
As with any tax return submitted to Treasury on paper, an
electronic tax return must be signed by an authorized tax
return signer, the Electronic Return Originator (ERO), if
applicable, and the paid tax preparer, if applicable. NOTE: If
the return meets one of the exceptions to the e-file mandate and
is being filed on paper, it must be manually signed and dated by
the taxpayer or the taxpayer’s authorized agent.
The MBT Fed/State e-file signature process is as follows:
Fed/State Returns: Michigan will accept the federal signature
method. Michigan does not require any additional signature
documentation.
State Stand Alone Returns: State Stand Alone returns must
be signed using Form MI-8879 (also called the Michigan
e-file Authorization for Business Taxes MI-8879, Form
4763). Returns are signed by entering the taxpayer PIN in the
software after reading the perjury statement displayed in the
software. The taxpayer PIN will be selected by the taxpayer, or
the taxpayer may authorize his or her tax preparer to select the
taxpayer PIN.
Form MI-8879 will be printed and contain the taxpayer PIN.
The tax preparer will retain Form MI-8879 in his or her records
as part of the taxpayer’s printed return. MBT State Stand Alone
e-filings submitted without a taxpayer PIN will be rejected by
Treasury. Do not mail Form MI-8879 to Treasury and do not
include Form MI-8879 as an attachment with the e-file return.

Mailing Addresses
Mail the annual return and all necessary schedules to:
With payment:
Michigan Department of Treasury
PO Box 30113
Lansing MI 48909
Without payment:
Michigan Department of Treasury
PO Box 30783
Lansing MI 48909
Mail quarterly estimate payments (Form 4913) to:
Michigan Department of Treasury
PO Box 30774
Lansing MI 48909-8274

Courier delivery service mail should be sent to:
Michigan Department of Treasury
7285 Parsons Dr.
Dimondale MI 48821
Make all checks payable to “State of Michigan.” Print
taxpayer’s FEIN or TR Number, the tax year, and “MBT” on
the front of the check. Do not staple the check to the return.

Correspondence
An address change or business discontinuance can be
reported online by using Michigan Treasury Online (MTO),
Business Tax Services. See www.michigan.gov/mtobusiness
for information. In the alternative, Notice of Change or
Discontinuance (Form 163), can be found online at www.
michigan.gov/treasuryforms.
Mail correspondence to:
Business Tax Division, MBT Unit
Michigan Department of Treasury
PO Box 30059
Lansing MI 48909

To Request Forms
Internet
Current and past year forms are available on Treasury’s Web
site at www.michigan.gov/treasuryforms.
TTY
Assistance is available using TTY through the Michigan Relay
Service by calling 711.

7

8

Michigan Department of Treasury
4588 (Rev. 04-24), Page 1 of 2

2024 Insurance Company Annual Return for
Michigan Business and Retaliatory Taxes

Check if this is an
amended return.
See instructions.

Issued under authority of Public Act 36 of 2007.
1. Taxpayer Name

2. Federal Employer Identification Number (FEIN) or TR Number

Address (Number, Street)
City

Check if
new address.
(See instructions)

State

ZIP/Postal Code

3.

Check if Foreign Insurer

Country Code 4. State of Incorporation (use 2 letter abbreviation)

DIRECT PREMIUMS WRITTEN IN MICHIGAN

5.

00

10.
11.

00
00

12. Disability insurance premiums written in Michigan, not including credit or disability income insurance,
OR $190,000,000, whichever is less.....................................................................................................................

12.

00

13. Gross direct premiums from all lines of insurance carrier services
received everywhere.....................................................................................
13.
00
14. Phase out.......................................................................................................
14.
280,000,000 00
15. Subtract line 14 from line 13. If less than zero, enter zero............................
15.
00
16. Exemption reduction. Multiply line 15 by 2..............................................................................................................
17. Subtract line 16 from line 12. If less than zero, enter zero......................................................................................
18. Adjusted Tax Base. Subtract line 17 from line 11....................................................................................................
19. Michigan Business Tax Before Credits. Multiply line 18 by 1.25% (0.0125).......................................................

16.
17.
18.
19.

00
00
00
00

5.
6.
7.
8.
9.
10.
11.

Gross direct premiums written in Michigan.............................................................................................................
Premiums on policies not taken.......................................................................
6.
00
Returned premiums on canceled policies........................................................
7.
00
Receipts on sales of annuities..........................................................................
8.
00
Receipts on reinsurance assumed...................................................................
9.
00
Add lines 6 through 9..............................................................................................................................................
Direct Premiums Written in Michigan. Subtract line 10 from line 5. If less than zero, enter zero......................

DISABILITY INSURANCE EXEMPTION

CREDITS

20. Enter amounts paid from 1/1/2023 to 12/31/2023 to each of the following
a. Michigan Workers’ Compensation Placement Facility...............................
20a.
00
b. Michigan Basic Property Insurance Association........................................ 20b.
00
c. Michigan Automobile Insurance Placement Facility..................................
20c.
00
d. Property and Casualty Guaranty Association............................................ 20d.
00
e. Michigan Life and Health Insurance Guaranty Association.......................
20e.
00
21. Add lines 20a through 20e...................................................................................................................................... 21.
22. a. Michigan Examination Fees...................................................................... 22a.
00
b. Credit. Multiply line 22a by 50% (0.50)............................................................................................................... 22b.
23. Tax Before Miscellaneous Nonrefundable Credits. Subtract lines 21 and 22b from line 19.............................. 23.
24. Miscellaneous Nonrefundable Credits from Form 4596, line 28............................................................................. 24.
25. Michigan Business Tax After Nonrefundable Credits. Subtract line 24 from line 23. If less than zero, enter zero... 25.
26. Recapture of Certain Business Tax Credits and Deductions from Form 4587, line 13............................................ 26.
27. Total Michigan Business Tax. Add lines 25 and 26............................................................................................. 27.
28. Corporate Income Tax Adjustment from Form 4974, line 20................................................................................... 28.
29. Tax Liability. Add lines 27 and 28........................................................................................................................... 29.

00
00
00
00
00
00
00
00
00

Return is due March 1, 2025.
WITHOUT PAYMENT: Mail return to:
Michigan Department of Treasury
PO Box 30783
Lansing MI 48909

+

WITH PAYMENT: Pay amount on line 58 and mail check and return to:
Michigan Department of Treasury
Make check payable to “State of Michigan.” Print taxpayer’s
PO Box 30113
FEIN or TR Number, the tax year, and “MBT” on the front of
Lansing MI 48909
the check. Do not staple the check to the return.

0000 2024 83 01 27 6

Continue and sign on Page 2

2024 Form 4588, Page 2 of 2

FEIN or TR Number

Foreign and alien insurers complete lines 30 through 46. Domestic insurers, go to line 47. Use column A to report burdens that would be imposed by the taxpayer’s state
of incorporation on a hypothetical Michigan company doing the same business in that state. Use column B to report actual burdens imposed by Michigan on the taxpayer.

TAXES

A — State of Incorporation

B — Michigan

X X X X X X X X

30. State of incorporation tax.......................................................................
31. Tax Liability from line 29.........................................................................

30.
31.

32.
33.
34.
35.
36.

Annual statement filing fee.....................................................................
Certificate of Authority renewal fee.........................................................
Certificate of Compliance.......................................................................
Certificate of Deposit..............................................................................
Certificate of Valuation............................................................................

32.
33.
34.
35.
36.

37.
38.
39.
40.
41.
42.

Other fees. Include a detailed schedule of fees....................................
Fire Marshall Tax....................................................................................
Second Injury Fund................................................................................
Silicosis and Dust Disease Fund............................................................
Safety Education and Training Fund......................................................
Other assessments. Include a detailed schedule of assessments........

37.
38.
39.
40.
41.

43.
44.
45.
46.
47.

Add lines 30 through 42.............................................................................. 43.
Accelerated and Certificated Refundable Credits (see instructions)...... 44. X X X X X X X X
Total Taxes, Fees and Assessments. Subtract line 44 from line 43........ 45.
Retaliatory Amount. Subtract line 45, column B, from column A. If less than zero, enter zero...............................
Total MBT Tax Liability. Add lines 29 and 46. Domestic insurers, enter amount from line 29..............................

46.
47.

00
00

48.
49.
50.
51.
52.
53.

Overpayment credited from prior MBT return..........................................................................................................
Estimated tax payments..........................................................................................................................................
There is no amount to be entered on this line. Skip to line 51................................................................................
Tax paid with request for extension.........................................................................................................................
Refundable Credits (see instructions).....................................................................................................................
Total Payments. Add lines 48 through 52. (If not amending, then skip to line 55.).................................................

48.
49.
50.
51.
52.
53.

00
00
X X X X X X X X 00
00
00
00

54.

00
AMENDED a. Payments made with original and/or prior amended returns.. 54a.
RETURN b. Overpayments from original and/or prior amended returns... 54b.
00
ONLY
c. Add lines 53 and 54a and subtract line 54b from the sum.... .................................................... 54c.

FEES AND ASSESSMENTS

TOTAL

X X X X X X X X

X
X
X
X
X

X
X
X
X
X

X
X
X
X
X

X
X
X
X
X

X
X
X
X
X

X
X
X
X
X

X
X
X
X
X

X
X
X
X
X

X X X X X X X X

42.

PAYMENTS, REFUNDABLE CREDITS AND TAX DUE

57. Annual return penalty (a)
% = (b)
00 plus interest of (c)
00 . Total........ 57d.
58. PAYMENT DUE. If line 55 is blank, go to line 59. Otherwise add lines 55, 56 and 57d.......................................... 58.

00
00
00
00
00

59. Overpayment. Subtract lines 47, 56 and 57d from line 53 (or line 54c, if amending).
If less than zero, leave blank (see instructions).....................................................................................................
60. CREDIT FORWARD. Amount on line 59 to be credited forward and used as an estimate for next MBT tax year.....
61. REFUND. Amount on line 59 to be refunded..........................................................................................................

00
00
00

55. TAX DUE. Subtract line 53 (or line 54c, if amending) from line 47. If less than zero, leave blank..........................
56. Underpaid estimate penalty and interest from Form 4582, line 38..........................................................................

55.
56.

OVERPAYMENT, REFUND OR CREDIT FORWARD

Taxpayer Certification.

I declare under penalty of perjury that the information in
this return and attachments is true and complete to the best of my knowledge.
By checking this box, I authorize Treasury to discuss my return with my preparer.
Authorized Signature for Tax Matters

Authorized Signer’s Name (print or type)
Title

+

0000 2024 83 02 27 4

59.
60.
61.

Preparer Certification.

I declare under penalty of perjury that this
return is based on all information of which I have any knowledge.
Preparer’s PTIN, FEIN or SSN

Preparer’s Business Name (print or type)

Date
Telephone Number

Preparer’s Business Address and Telephone Number (print or type)

Instructions for Form 4588
Insurance Company Annual Return for Michigan Business and Retaliatory Taxes
Purpose
To calculate the tax liability and to claim credits for insurance
companies for both Michigan Business and Retaliatory Taxes.
NOTE: Beginning January 1, 2012, only those taxpayers with
a certificated credit, which is awarded but not yet fully claimed
or utilized, may elect to be Michigan Business Tax (MBT)
taxpayers.   If a taxpayer files an MBT return and claims a
certificated credit, the taxpayer makes the election to file
and pay under the MBT until the certificated credit and any
carryforward of that credit are exhausted.

General Instructions
MBT Liability: Beginning January 1, 2012, a taxpayer
calculates MBT liability as the greater of MBT liability after
all credits, deductions, and exemptions or hypothetical CIT
liability minus deductions and credits available under that act
and minus certificated credits allowed under the MBT.   This
calculation of liability requires a taxpayer to calculate the
premiums tax base and apply available MBT credits, including
certificated credits, deductions, and exemptions available
under the MBT.   Then, the taxpayer will calculate the CIT
comparison on the Schedule of Corporate Income Tax Liability
for an Insurance Filer (Form 4974).  A taxpayer is permitted to
reduce hypothetical CIT liability by all deductions and credits
which would be allowed under that tax as well as the amount
of certificated credit allowed under the MBT.   The amount
of certificated credit allowed under the MBT is the amount
of nonrefundable credit needed to offset MBT liability or the
entire amount of a refundable credit.
If the taxpayer’s hypothetical CIT liability would be higher
than its MBT liability, the taxpayer will add the difference to
MBT liability on line 28 of this form (4588).   This is the CIT
adjustment.   If the result of both steps of the calculation is a
negative number, the taxpayer will receive a refund of the lower
negative; but a nonrefundable credit cannot be used to reduce
liability below zero. Remaining nonrefundable certificated credit
may be carried forward to succeeding tax years.
Amended Returns: To amend a current or prior year annual
return, complete the Form 4588 that is applicable for that year,
check the box in the upper-right corner of the return, and attach
a separate sheet explaining the reason for the changes. Include an
amended federal return or a signed and dated Internal Revenue
Service (IRS) audit document. Include all schedules filed with
the original return, even if not amending that schedule. Enter
the figures on the amended return as they should be. Do not
include a copy of the original return with your amended return.
A taxpayer may not amend to revoke the election to remain
taxable under the MBT. Once the taxpayer makes a valid election
to claim a certificated credit, the taxpayer must continue to file
the MBT until the credit and any carryforward of that credit are
exhausted.

Line-by-Line Instructions
Lines not listed are explained on the form.

Do not enter data in boxes filled with Xs.
Line  1: Enter the complete address and, if other than the
United States, enter the two-digit abbreviation for the country
code. See the list of country codes in the Michigan Business
Tax (MBT) Forms and Instructions for Insurance Companies
(Form 4592).
Any correspondence regarding the return filed and/or refund
will be sent to the address used here. Check the new address
box if the address used on this line has changed from the last
filing. The taxpayer’s primary address in the Department of
Treasury (Treasury) files, identified as the legal address and
used for all purposes other than refund and correspondence
on a specific MBT return, will not change until the customer
specifically makes the change on their Michigan Treasury
Online (MTO) account. Visit michigan.gov/mtobusiness for
more information.
Line  2: Use the taxpayer’s Federal Employer Identification
Number (FEIN) or the Michigan Treasury (TR) assigned
number. Be sure to use the same account number on all forms.
If the taxpayer does not have an FEIN or TR number,
the taxpayer must register before filing this form.
Taxpayers
are
encouraged
to
register
online
at
www.michigan.gov/mtobusiness. Click on the quick link “New
Business” for information on how to obtain an FEIN, which
is required to submit a return through e-file. Taxpayers usually
can obtain an FEIN from the IRS within 48 hours. Taxpayers
registering with the State online usually receive an account
number within seven days.
Returns received without a registered account number will not
be processed until such time as a number is provided.
Line  3: Check this box if the company is a foreign insurer.
Alien insurers are considered foreign insurers, unless their port
of entry is Michigan, in which case the company is considered
domestic for the filing of this return.
Line 4: Alien insurers, enter the two-letter postal code for the
U.S. state that is your port of entry.
Line  5: Enter all gross direct premiums written on property or
risk located or residing in Michigan.
Line  6: Enter premiums on policies not taken to the extent
these premiums were included in line 5.
Line  7: Enter returned premiums on canceled policies to the
extent these premiums were included in line 5.
Line  8: Enter receipts on sales of annuities to the extent these
receipts were included in line 5.
Line  9: Enter receipts on reinsurance premiums assumed to
the extent these receipts were included in line 5, and only if tax
was paid on the original premiums.
Line 12: Disability insurance is insurance of any person
against bodily injury or death by accident, or against disability
on account of sickness or accident including also the granting

11

of specific hospital benefits and medical, surgical and sickcare benefits to any person, family, or group, subject to such
limitations as may be prescribed with respect thereto. The
exclusion for disability insurance premiums does not include
credit insurance or disability income insurance premiums.
CREDITS
Line  20: Enter the amounts paid to the listed facilities
or associations from January 1, 2023, to December 31,
2023, including special assessments. Net the amounts paid
and refunds received during 2023 for the same facility or
association. If refunds received exceed the amount paid in the
year for the same facility or association, enter zero.
Line 20c: For tax years beginning on and after January 1,
2023, amounts paid to the MAIPF that are attributable to the
assigned claims plan shall not be included in the calculation of
this credit.
Line  22a: Enter the amount of Michigan Examination Fees
paid in 2024 (under Michigan Compiled Law 500.224).
Line  24: Enter the Miscellaneous Nonrefundable Credits from
Michigan Business Tax Miscellaneous Credits for Insurance
Companies (Form 4596), line 28.
Retaliatory Instructions
For foreign and alien insurers only; domestic insurers skip
lines 30 through 46.
Do not mail this return with the Michigan Annual Financial
Statement, and do not send the annual statement filing fee
with this return. The taxpayer will be billed separately for the
annual statement filing fee by the Department of Insurance and
Financial Services.
Foreign insurers must pay to Michigan the same type of
obligation a similar Michigan insurer is required to pay in the
company’s state of domicile. Enter all items that are required
of a Michigan insurance company. Some taxes and obligations
imposed in other states may have no corresponding requirement
in Michigan; however, this does not relieve the foreign insurer
from the obligation of computing and paying the tax.
Do not include the following Michigan assessments,
or comparable assessments in the company’s state of
incorporation, in the retaliatory calculation:
•	
•	
•	
•	
•	
•	
•	

Michigan Workers’ Compensation Placement Facility
Michigan Basic Property Insurance Association
Michigan Automobile Insurance Placement Facility
Property and Casualty Guaranty Association
Michigan Life and Health Insurance Guaranty Association
Catastrophic Claims Association
Assessment under Health Insurance Claims Assessment Act
(HICAA).

California insurers must include Bureau of Fraudulent Claims
assessments. New York domiciled companies must file and pay
a tentative retaliatory tax to Michigan by the annual due date,
March 1, 2023. An amended Form 4588 must be filed after
the actual CT33 is filed with New York. Transfer the CT33
numbers onto the amended Form 4588 and attach a copy of the
CT33 to substantiate the taxpayer’s claim.

12

Line  30: Enter the tax a Michigan company would pay
to the taxpayer’s state of incorporation if it conducted the
same amounts and types of business there as the taxpayer
is conducting in Michigan. Attach a copy of the state of
incorporation’s tax form on which this pro forma tax on the
hypothetical Michigan company was calculated.
Lines 32 through 42: In column A, “State of Incorporation,”
enter the amounts that would be paid by a hypothetical
Michigan insurance company doing the same types and
amounts of business in the taxpayer’s home state that the
taxpayer is doing in Michigan.
Lines 37 and 39 through 42: In column B, “Michigan,” enter
the actual amounts paid by the taxpayer to Michigan.
Line 42: Attach a detailed schedule of assessments.
Line 44: Enter the sum of accelerated and certificated
refundable credits:
•	 Accelerated credits: The amount from the Request for
Accelerated Payment for the Brownfield Redevelopment
Credit and the Historic Preservation Credit (Form 4889),
line 10. (If the taxpayer has filed more than one Form 4889
during the tax year, enter here the combined total of credits
claimed on all Forms 4889, line 10);  
•	 Certificated Refundable credits: The sum of  the  amounts
reported on Form 4596, lines 2, 3, and 4.
Line  46: Subtract line 45, column B, from line 45, column A.
If less than zero, enter zero. If line 45, column B, is a negative
number, add column A to the negative number in column B.
This will increase the retaliatory amount reported.
PAYMENTS, REFUNDABLE CREDITS, AND TAX DUE
Line  49: Enter the total tax paid with the quarterly estimated
tax returns.
Line  51: Enter any tentative payment of estimated tax made
with a request for an extension of time to file the return.
Line  52: If claiming a credit, enter the amount from Form
4596, line 5.
Amended Returns Only:
Line  54a: Enter payment made with the original return.
Line  54b: Enter overpayment received (refund received plus
credit forward created) on the original return.
Line  54c: Add lines 53 and 54a and subtract line 54b from
the sum.
Line  56: If penalty and interest are owed for not filing
estimated returns or for underestimating tax, complete
the MBT Penalty and Interest Computation for Underpaid
Estimated Tax (Form 4582) to compute penalty and interest
due. If a taxpayer chooses not to file Form 4582, Treasury will
compute penalty and interest and bill for payment. Form 4582
is available on the Web at www.michigan.gov/taxes.
Line  57: Enter the annual return penalty rate in line 57a. Add
the overdue tax penalty in line 57b to the overdue tax interest
in line 57c. Enter total in line 57d.

Refer to the “Computing Penalty and Interest” section in Form 4592
to determine the annual return penalty rate and use the following
Overdue Tax Penalty and Overdue Tax Interest worksheets.
WORKSHEET – OVERDUE TAX PENALTY
A. Tax due from Form 4588, line 55.........
B. Late/extension or insufficient
payment penalty percentage.................
C. Multiply line A by line B......................

00

•	 MBT Renaissance Zone Credit Schedule (Form 4595)
•	 MBT Miscellaneous Credits for Insurance Companies
(Form 4596)
•	 Proof of payment for any items listed in the “Michigan”
column for lines 39 through 42.

%
00

Carry amount from line C to Form 4588, line 57b.
A.
B.
C.
D.
E.

WORKSHEET – OVERDUE TAX INTEREST
Tax due from Form 4588, line 55.........
Applicable daily interest percentage ...
Number of days return was past due....
Multiply line B by line C .....................
Multiply line A by line D ....................

00
%
00

Carry amount from line E to Form 4588, line 57c.
Line 57c: NOTE: If the late period spans more than one
interest rate period, divide the late period into the number of
days in each of the interest rate periods identified under the
“Computing Penalty and Interest” section in Form 4592 and
apply the calculations in the Overdue Tax Interest worksheet
separately to each portion of the late period. Combine these
interest subtotals and carry the total to Form 4588, line 57c.
Line 59: If the amount of the overpayment, less any penalty
and interest due on lines 56 and 57d, is less than zero, enter the
difference (as a positive number) on line 58. If the amount is
greater than zero, enter on line 59.
NOTE: If an overpayment exists, a taxpayer must elect a
refund of all or a portion of the amount and/or designate all or
a portion of the overpayment to be used as an estimate for the
next MBT tax year. Complete lines 60 and 61 as applicable.
Line 60: If the taxpayer anticipates an MBT liability in the
filing period subsequent to this return, some or all of any
overpayment from line 59 may be credited forward to the next
tax year as an estimated payment. Enter the desired amount to
use as an estimate for the next MBT tax year.
Reminder: Taxpayers must sign and date returns. Tax
preparers must provide a Preparer Taxpayer Identification
Number (PTIN), FEIN or Social Security number (SSN), a
business name, and a business address and phone number.

Other Supporting Forms and Schedules
The following forms and their requested attachments should be
included as part of this return, as applicable:
•	 Michigan Historic Preservation Tax Credit (Form 3581)
•	 MBT Single Business Tax (SBT) Credit Carryforwards
(Form 4569)
•	 MBT Penalty and Interest Computation for Underpaid
Estimated Tax (Form 4582)
•	 MBT Election of Refund or Carryforward Credits
(Form 4584)
•	 MBT Schedule of Recapture of Certain Business Tax Credits
and Deductions (Form 4587)

13

14

Attachment 01

Michigan Department of Treasury
4596 (Rev. 04-24), Page 1 of 2

2024 MICHIGAN Business Tax Miscellaneous Credits for Insurance Companies
Issued under authority of Public Act 36 of 2007.
Taxpayer Name

Federal Employer Identification Number (FEIN) or TR Number

PART 1:  REFUNDABLE CREDITS
Workers’ Disability Supplemental Benefit (WDSB) Credit. If not claiming, skip to line 2.
1.

00

2.

00

3.

00

4. Assigned credit amount (see instructions).............................................................................................................

4.

00

5. TOTAL REFUNDABLE CREDITS. Add lines 1 through 4. Enter total here and carry to Form 4588, line 52.......

5.

00

6.

X X X X X X X X 00

7. Michigan Compensation..........................................................................................................................................

7.

00

8. Compensation Credit. Multiply line 7 by 0.37% (0.0037)........................................................................................

8.

00

9. Enter amount from Form 4588, line 23...................................................................................................................

9.

00

10. WDSB Credit from line 1 above.............................................................................................................................

10.

00

11. Subtract line 10 from line 9. If less than zero, enter zero......................................................................................

11.

00

12. Multiply line 11 by 65% (0.65).................................................................................................................................

12.

00

13. Allowable Compensation Credit. Enter lesser of line 8 or line 12.......................................................................

13.

00

14. Tax After Compensation Credit. Subtract line 13 from line 9. If less than zero, enter zero....................................

14.

00

1. WDSB Credit allowed by the Workers’ Compensation Agency (attach document)................................................

MEGA Employment Tax Credit. If not claiming, skip to line 3.
2. Credit amount from MEDC Annual Tax Credit Certificate (attach).........................................................................

MEGA Photovoltaic Technology Credit. If not claiming this credit, skip to line 4.
3. Credit amount from Assignment Certificate provided by MEDC (attach)...............................................................

Film Production Credit. If not claiming, skip to line 5.

PART 2:  NONREFUNDABLE CREDITS
6. There is no amount to be entered on this line........................................................................................................

Compensation Credit. If not claiming, skip to line 14 and enter there the amount from Form 4588, line 23.

Reduced Compensation Credit

+

0000 2024 97 01 27 7

Continue on Page 2

2024 Form 4596, Page 2 of 2

FEIN or TR Number

Renaissance Zone Credit. If not claiming, carry amount from line 14 to line 16.

If claiming, complete and include the MBT Renaissance Zone Credit Schedule (Form 4595).
15. Renaissance Zone Credit. Amount from Form 4595, line 25b .............................................................................

15.

00

16. Tax After Renaissance Zone Credit. Subtract line 15 from line 14. If less than zero, enter zero............................

16.

00

17.

00

18a. Recapture of Historic Preservation Tax Credit from Form 4584, line 2................................................................... 18a.

00

18b. Historic Preservation Credit Net of Recapture. Subtract line 18a from line 17. If less than zero, enter as a
negative number...................................................................................................................................................... 18b.

00

Historic Preservation Credit. If not claiming, carry amount from line 16 to line 19.
17. Historic Preservation Credit from Form 4584, line 28..........................................................................................

19.

00

20. Brownfield Redevelopment Credit from Form 4584, line 55..............................................................................

20.

00

21. Tax After Brownfield Redevelopment Credit. Subtract line 20 from line 19. If less than zero, enter zero.............

21.

00

22. Assigned credit amount..........................................................................................................................................

22.

00

23. Unused credit from previous period MBT return.....................................................................................................

23.

00

24. Total Available Credit. Add lines 22 and 23...........................................................................................................

24.

00

25. Film Infrastructure Credit. Enter the lesser of line 21 or 24................................................................................

25.

00

26. Tax After Film Infrastructure Credit.