Schedule CT-1040 AW: Part-Year Resident Income Allocation (2025)
Connecticut · Connecticut DRS · Used for tax years 2025
Schedule CT-1040AW allocates a part-year resident’s income and adjustments between Connecticut resident and nonresident periods, including Connecticut-source income during the nonresident period. It also records dates of moves into or out of Connecticut and prior or new states of
Who files this form
Connecticut part-year residents must complete Schedule CT-1040AW before completing Schedule CT-SI and attach it to Form CT-1040NR/PY. This version is for tax year 2025.
What you'll need
Have these forms and details available to complete the schedule:
- Your federal return, for the income amounts used in Column A.
- Form CT-1040NR/PY and Schedule CT-SI, which connect to this schedule.
- Your name and Social Security number, and your spouse’s information if filing jointly.
- Income and adjustment amounts for your Connecticut resident and nonresident periods, including Connecticut-source income during the nonresident period.
- Your move-in or move-out date and your prior or new state of residence, plus the corresponding details for your spouse, if applicable.
- Whether you or your spouse received Connecticut-source income during the nonresident period.
How to file
Complete the 2025 Schedule CT-1040AW before completing Schedule CT-SI. Attach it to Form CT-1040NR/PY. Use blue or black ink only, and do not use staples.
Add Columns B and D for each line and enter the totals on the corresponding Lines 1 through 30 of Schedule CT-SI.
The supplied form does not give a mailing address or e-filing instructions. It directs readers to portal.ct.gov/DRS for more information.
Common mistakes
- Using the wrong year’s form: The form warns that submitting the correct year’s form is required to prevent processing delays. Use the 2025 version for tax year 2025.
- Using staples: Do not staple the schedule.
- Using another ink color: Complete the schedule in blue or black ink only.
- Leaving totals inconsistent: Line 30, Column A, must equal Form CT-1040NR/PY, Line 5.
Questions people ask
What do the four income columns represent?
Column A is income from your federal return. Column B is the income from Column A for your Connecticut resident period. Column C is the income from Column A for your nonresident period. Column D is the Connecticut-source income from Column C.
How do I calculate Line 30?
Add Lines 1 through 14 to get Line 15. Add the adjustments on Lines 16 through 28 to get Line 29. Subtract Line 29 from Line 15 to get Line 30.
How does this schedule connect to Schedule CT-SI?
Add Columns B and D for each line, then enter those totals on the corresponding Lines 1 through 30 of Schedule CT-SI.
What moving information does Part 3 ask for?
It asks for the date you moved into Connecticut and your prior state of residence, or the date you moved out and your new state of residence. It also has fields for your spouse’s move information and asks whether each of you received Connecticut-source income during your nonresident period.