CT-8801: Credit for Prior Year Connecticut Minimum Tax for Individuals, Trusts, and Estates (2024)
Connecticut · Connecticut DRS · Used for tax years 2024
Form CT-8801 is used by individuals, trusts, and estates to calculate the credit for Connecticut alternative minimum tax paid in prior years. It also figures any minimum tax credit carryforward that may be used in future years.
Who files this form
Individuals, trusts, and estates should file 2024 Form CT-8801 if they:
- Had a Connecticut alternative minimum tax liability in 2023 and had adjustments or tax preference items other than exclusion items in 2023; or
- Are claiming a minimum tax credit carryforward from a prior year.
The form calculates the credit for Connecticut alternative minimum tax paid in prior years and any credit carryforward available for future years. To determine the carryforward, complete Form CT-8801 for each preceding year.
What you'll need
Have these forms and details available, as applicable:
- 2024 federal Form 8801. Complete it before completing Connecticut Form CT-8801.
- 2023 Form CT-6251 or 2023 Form CT-1041, Schedule I. These provide prior-year minimum tax amounts used in the calculation.
- 2023 Schedule CT-IT Credit. Line 10, Column E provides the prior-year credit carryforward.
- Your 2024 Connecticut return: Form CT-1040, CT-1040NR/PY, or CT-1041, plus 2024 Schedule CT-IT Credit.
- 2024 Form CT-6251 or Form CT-1041, Schedule I. You must complete the applicable form to claim this credit, even if you otherwise would not be required to file it.
- 2023 federal Form 2555, if you claimed a foreign earned income exclusion, housing exclusion, or housing deduction.
Individuals need their name and Social Security number as shown on their Connecticut return, plus their spouse’s information for a joint return. Trusts and estates need the trust or estate name, fiduciary’s name, and Federal Employer Identification Number.
How to file
- Complete your 2024 federal Form 8801 first.
- Complete the applicable parts of Form CT-8801 and its worksheets. If you had no Connecticut alternative minimum tax liability in 2023 and are only claiming a carryforward, skip Lines 1 through 25. Enter the amount from 2023 Schedule CT-IT Credit, Line 10, Column E, on Line 26.
- Follow the Line 30 instructions to determine your allowed credit and enter it on 2024 Schedule CT-IT Credit, Part 1, Line 9, Column D.
Electronic filing: Complete Form CT-8801 and upload it as an attachment to your electronically filed return.
Paper filing: Place Form CT-8801 at the back of your complete Form CT-1040, CT-1040NR/PY, or CT-1041. Use blue or black ink only. Do not use staples.
Common mistakes
- Using the wrong year’s form. Each form is year-specific. The correct year’s form must be submitted to avoid processing delays.
- Skipping the current-year minimum tax calculation. To claim the credit, you must complete 2024 Form CT-6251 or Form CT-1041, Schedule I, even if you have no federal alternative minimum tax and otherwise would not need to file that form.
- Using the wrong ink or stapling a paper return. Complete Form CT-8801 in blue or black ink only, and do not use staples.
Questions people ask
Can I carry unused credit forward?
Yes. Any unused credit may be carried forward to reduce regular Connecticut income tax in future years until it is completely used. Additional credit earned in a later year may be added to the balance.
Can I claim a carryforward if I had no Connecticut alternative minimum tax liability in 2023?
Yes. Skip Lines 1 through 25 and enter your 2023 Schedule CT-IT Credit, Line 10, Column E amount on Line 26.
Is the amount I can use in 2024 limited?
Yes. The credit is limited by how much your 2024 regular Connecticut income tax, after the specified credits, exceeds your 2024 Connecticut alternative minimum tax, after the specified credit. Follow the Line 30 instructions for the allowed amount.
Which trusts must complete Worksheet C?
Only full-year resident or part-year resident inter-vivos trusts with one or more nonresident noncontingent beneficiaries must complete Worksheet C. All other trusts complete Line 4 and skip Worksheet C.