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Connecticut Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
Extracted from PDF file 2023-connecticut-form-ct-si.pdf, last modified December 2023Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
Department of Revenue Services State of Connecticut (Rev. 12/23) 2023 Schedule CT-SI Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources Complete this schedule if you were a nonresident or part-year resident of Connecticut and attach it to Form CT-1040NR/PY. Do not use staples. Complete in blue or black ink only. Please note that each form is year specific. To prevent any delay in processing your return, the correct year’s form must be submitted to the Department of Revenue Services (DRS). Your first name and middle initial Last name If joint return, spouse’s first name and middle initial Last name Your Social Security Number •• •• •• •• Spouse’s Social Security Number •• •• •• •• __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ Visit portal.ct.gov/DRS/Individuals/Individual-Income-Tax before completing this schedule. Part 1 - Connecticut Income - Part‑Year Residents: Complete Schedule CT‑1040AW, Part‑Year Resident Income Allocation. Add Columns B and D for each line of Schedule CT‑1040AW and enter the totals on Lines 1 through 30 below. Nonresidents: Enter the income received from Connecticut sources. 1. Wages, salaries, tips, etc. ........................................................................................................................... 1. 2. Taxable interest .......................................................................................................................................... 2. 3. Ordinary dividends...................................................................................................................................... 3. 4. Alimony received......................................................................................................................................... 4. 5. Business income or (loss)........................................................................................................................... 5. 6. Capital gain or (loss)................................................................................................................................... 6. 7. Other gains or (losses)................................................................................................................................ 7. 8. Taxable amount of IRA distributions............................................................................................................ 8. 9. Taxable amounts of pension and annuities................................................................................................. 9. 10. Rental real estate, royalties, partnerships, S corporations, trusts, etc........................................................ 10. 11. Farm income or (loss)................................................................................................................................. 11. 12. Unemployment compensation..................................................................................................................... 12. 13. Taxable amount of social security benefits.................................................................................................. 13. 14. Other income: See instructions. ................................................................................................................. 14. 00 15. Gross income from Connecticut sources: Add Lines 1 through 14............................................................. 15. Part 2 - Adjustments to Connecticut Income - Enter adjustments directly related to income reported above. 16. Educator expenses...................................................................................................................................... 16. 17. Certain business expenses of reservists, performing artists, and fee-basis government officials.............. 17. 18. Health savings account deduction............................................................................................................... 18. 19. Moving expenses for members of the armed forces................................................................................... 19. 20. Deductible part of self-employment tax....................................................................................................... 20. 21. Self-employed SEP, SIMPLE, and qualified plans...................................................................................... 21. 22. Self-employed health insurance deduction................................................................................................. 22. 23. Penalty on early withdrawal of savings....................................................................................................... 23. 24. Alimony paid. Recipient’s last name _____________________ SSN ________–_____ –________ 24. 25 IRA deduction.............................................................................................................................................. 25. 26. Student loan interest deduction................................................................................................................... 26. 27. Archer MSA deduction................................................................................................................................. 27. 28. Other adjustments....................................................................................................................................... 28. 29. Total adjustments: Add Lines 16 through 28. ............................................................................................. 29. 30. Income from Connecticut sources: Subtract Line 29 from Line 15. Enter the amount here and on Form CT‑1040NR/PY, Line 6. ................................................................... 30. 00 Employee Apportionment Worksheet - Complete Lines A through G only when the income from employment is earned both inside and outside Connecticut and the exact amount of Connecticut income is not known. Do not complete Lines A through G if you know the exact amount of your Connecticut-sourced income. A. B. C. D. E. F. G. Working days (or other basis) outside Connecticut........................................................................................ A Working days (or other basis) inside Connecticut.......................................................................................... B Total working days: Add Line A and Line B. ................................................................................................... C Nonworking days (Holidays, weekends, etc.)................................................................................................. D Connecticut ratio: Divide Line B by Line C. Round to four decimal places. .................................................. E Total income being apportioned..................................................................................................................... F Connecticut income: Multiply Line E by Line F. Enter here and on Schedule CT‑SI, Line 1. ....................... G Basis, if other than working days: _______________________ Visit us at portal.ct.gov/DRS for more information. .
Form CT-SI
More about the Connecticut Form CT-SI Individual Income Tax Nonresident TY 2023
Form CT-SI requires you to list multiple forms of income, such as wages, interest, or alimony 
.
We last updated the Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources in January 2024, so this is the latest version of Form CT-SI, fully updated for tax year 2023. You can download or print current or past-year PDFs of Form CT-SI directly from TaxFormFinder. You can print other Connecticut tax forms here.
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TaxFormFinder has an additional 85 Connecticut income tax forms that you may need, plus all federal income tax forms.
| Form Code | Form Name |
|---|---|
| Form CT-1040 | Connecticut Resident Income Tax Return |
| Tax Instruction Booklet | Form CT-1040 Instruction Booklet |
| CT-1040ES (Current Year) | Estimated Connecticut Income Tax Payment Coupon for Individuals |
| Form CT-1040 EXT | Application for Extension of Time to File Connecticut Income Tax Return for Individuals |
| CT-1040NR/PY Instructions | Tax Instruction Booklet: CT-1040 for Nonresidents/Part-Year Residents |
View all 86 Connecticut Income Tax Forms
Form Sources:
Connecticut usually releases forms for the current tax year between January and April. We last updated Connecticut Form CT-SI from the Department of Revenue Services in January 2024.
Form CT-SI is a Connecticut Individual Income Tax form. Many states have separate versions of their tax returns for nonresidents or part-year residents - that is, people who earn taxable income in that state live in a different state, or who live in the state for only a portion of the year. These nonresident returns allow taxpayers to specify which which income is subject to the state's taxes, and which is not.
About the Individual Income Tax
The IRS and most states collect a personal income tax, which is paid throughout the year via tax withholding or estimated income tax payments.
Most taxpayers are required to file a yearly income tax return in April to both the Internal Revenue Service and their state's revenue department, which will result in either a tax refund of excess withheld income or a tax payment if the withholding does not cover the taxpayer's entire liability. Every taxpayer's situation is different - please consult a CPA or licensed tax preparer to ensure that you are filing the correct tax forms!
Historical Past-Year Versions of Connecticut Form CT-SI
We have a total of thirteen past-year versions of Form CT-SI in the TaxFormFinder archives, including for the previous tax year. Download past year versions of this tax form as PDFs here:
2017 Form CT-SI
Schedule CT-SI 20170911.indd
2016 Form CT-SI
Schedule CT-SI, 2016 Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
2015 Form CT-SI
Schedule CT-SI, 2015 Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
2014 Form CT-SI
Schedule CT-SI, 2014 Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
2013 Form CT-SI
Schedule CT-SI, 2013 Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
2012 Form CT-SI
Schedule CT-SI, 2012 Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
2011 Form CT-SI
Schedule CT-SI, Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
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