Federal Employer's Annual Railroad Retirement Tax Return

Employer's Annual Railroad Retirement Tax Return
2024 Form CT-1
CT-1

Employer’s Annual Railroad Retirement Tax Return

Department of the Treasury
Internal Revenue Service

Go to www.irs.gov/CT1 for instructions and the latest information.

Form

Type
or
Print
Part I
1
2
3
4
5
6
7
8
9
10
11
12
13
14

15
16
17
18

Name

Employer identification number (EIN)

Address (number and street)

RRB number

OMB No. 1545-0029

2024
If final return,
check here

City or town, state or province, country, and ZIP or foreign postal code

Railroad Retirement Taxes. On lines 1 through 12 below, enter the amount of compensation paid in 2024
for each tax. Then, multiply it by the rate shown and enter the tax.

Compensation
Rate
Tier 1 Employer Tax—Compensation (other than tips and sick pay) $
× 6.2% =
Tier 1 Employer Medicare Tax—Compensation (other than tips and
sick pay) . . . . . . . . . . . . . . . . . . . $
× 1.45% =
Tier 2 Employer Tax—Compensation (other than tips) . . . . $
× 13.1% =
Tier 1 Employee Tax—Compensation (other than sick pay) . . $
× 6.2% =
Tier 1 Employee Medicare Tax—Compensation (other than sick
pay) (for tips, see instructions) . . . . . . . . . . . . $
× 1.45% =
Tier 1 Employee Additional Medicare Tax—Compensation (other
than sick pay) (for tips, see instructions) . . . . . . . . . $
× 0.9% =
Tier 2 Employee Tax—Compensation (for tips, see instructions) . $
× 4.9% =
Tier 1 Employer Tax—Sick pay . . . . . . . . . . . . $
× 6.2% =
Tier 1 Employer Medicare Tax—Sick pay . . . . . . . . $
× 1.45% =
Tier 1 Employee Tax—Sick pay
. . . . . . . . . . . $
× 6.2% =
Tier 1 Employee Medicare Tax—Sick pay . . . . . . . . $
× 1.45% =
Tier 1 Employee Additional Medicare Tax—Sick pay . . . . . $
× 0.9% =
Total tax based on compensation (add lines 1 through 12) . . . . . . . . . . . . . .
Adjustments to employer and employee railroad retirement taxes based on compensation. See the
instructions for line 14 and attach required statements.
± Other $
=
Fractions of Cents $
Total railroad retirement taxes based on compensation (line 13 as adjusted by line 14) . . .
Total railroad retirement tax deposits for the year, including overpayment applied from a prior year
and overpayment applied from Form CT-1 X . . . . . . . . . . . . . . . . . .
Balance due. If line 15 is more than line 16, enter the difference and see the instructions . . .
Overpayment. If line 16 is more than line 15, enter the difference . . . . $
Check one:
Apply to next return.
Send a refund.

Tax
1
2
3
4
5
6
7
8
9
10
11
12
13

14
15
16
17

• All filers: If line 15 is less than $2,500, don’t complete Part II or Form 945-A.
• Semiweekly schedule depositors: Complete Form 945-A and see the Part II instructions on page 2.
• Monthly schedule depositors: Complete Part II on page 2.

ThirdParty
Designee

Sign
Here

Do you want to allow another person to discuss this return with the IRS? See separate instructions.
Designee’s
name

Phone
no.

Yes. Complete the following.

No.

Personal identification
number (PIN)

Under penalties of perjury, I declare that I have examined this return, including accompanying schedules and statements, and to the best of my knowledge and
belief, it is true, correct, and complete. Declaration of preparer (other than taxpayer) is based on all information of which preparer has any knowledge.

Signature
Print/Type preparer’s name

Paid
Preparer
Use Only

Print Your
Name and Title
Preparer’s signature

Date
Date

Firm’s name

PTIN

Firm’s EIN

Firm’s address

For Privacy Act and Paperwork Reduction Act Notice, see separate instructions.

Check
if
self-employed

Phone no.
Cat. No. 16006S

Form CT-1 (2024)

Page 2

Form CT-1 (2024)

Part II

Record of Railroad Retirement Tax Liability

Complete the Monthly Summary of Railroad Retirement Tax
Liability below only if you were a monthly schedule depositor
for the entire year. Enter your Tier 1 and Tier 2 tax liability on the
lines provided for each month.
If you were a semiweekly schedule depositor during any part
of the year or you accumulated $100,000 or more on any day
during a deposit period, you must complete Form 945-A,
Annual Record of Federal Tax Liability. Don’t complete the
monthly summary below.

On Form 945-A for each payday, enter the sum of your
employee and employer Tier 1 and Tier 2 taxes on the
appropriate line.
Your total tax liability for the year (line V below or line M on
Form 945-A) must equal your total taxes for the year (Form
CT-1, line 15).
Note: See the separate instructions for the deposit rules for
railroad retirement taxes.

Monthly Summary of Railroad Retirement Tax Liability
Complete if Part I, line 15, is $2,500 or more and you were a monthly schedule depositor.

Date compensation paid:
First month of quarter:
Tier 1 and Tier 2 taxes
I First month liability
Second month of quarter:
Tier 1 and Tier 2 taxes
II Second month liability
Third month of quarter:
Tier 1 and Tier 2 taxes
III Third month liability
IV Total for quarter, add
lines I, II, and III.

First Quarter

Second Quarter

Third Quarter

Fourth Quarter

January

April

July

October

February

May

August

November

March

June

September

December

V Total railroad retirement tax liability for the year. This must equal Part I, line 15 .

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Form CT-1 (2024)

Page 3

Form CT-1 (2024)

Form CT-1(V),
Payment Voucher
Purpose of Form

Specific Instructions

Complete Form CT-1(V) if you’re making a payment with
Form CT-1. We will use the completed Form CT-1(V) to
credit your payment more promptly and accurately, and
to improve our service to you.

Box 1—Employer identification number (EIN). If you
don’t have an EIN, you may apply for one online by
visiting www.irs.gov/EIN. You may also apply for an EIN
by faxing or mailing Form SS-4 to the IRS. If you haven’t
received your EIN by the due date of Form CT-1, write
“Applied For” and the date you applied in this entry
space.
Box 2—Amount paid. Enter the amount paid with
Form CT-1.
Box 3—Name and address. Enter your business name
and address as shown on Form CT-1.
• Enclose your check or money order made payable to
“United States Treasury.” Be sure to enter your EIN,
“Form CT-1,” and “2024” on your check or money order.
Don’t send cash. Don’t staple Form CT-1(V) or your
payment to Form CT-1 or to each other.
• Detach Form CT-1(V) and send it with your payment
and Form CT-1 to the address in the Instructions for
Form CT-1.

Making Payments With Form CT-1
To avoid a penalty, make a payment with Form CT-1 only
if one of the following applies.
• Your total railroad retirement taxes for the year (Form
CT-1, line 15) are less than $2,500 and you’re paying in
full with a timely filed return.
• You’re a monthly schedule depositor making a payment
in accordance with the Accuracy of Deposits Rule. See
the separate instructions for details. This amount may be
$2,500 or more.
Otherwise, you must make deposits by electronic funds
transfer. Don’t use Form CT-1(V) to make federal tax
deposits. See Electronic Deposit Requirement in the
separate instructions.
Use Form CT-1(V) when paying any amount with
Form CT-1. However, if you pay an amount with
Form CT-1 that should’ve been deposited, you
CAUTION
may be subject to a penalty. See Penalties
and Interest in the separate instructions.

!
▲

Detach Here and Mail With Your Payment and Form CT-1.

Form CT-1(V)
Department of the Treasury
Internal Revenue Service
1

Enter your employer identification number (EIN)

Payment Voucher
Use this voucher when making a payment with Form CT-1.
2

Enter the amount of your payment.
Make your check or money order payable to “United States Treasury.”

3 Enter your business name.
Enter your address.
Enter city or town, state or province, country, and ZIP or foreign postal code.

OMB No. 1545-0029

2024
Dollars

Cents