Amended Returns
The IRS Adjusted My Tax Liability, Do I Need to File an Amended Return?
Yes. An amended City of Detroit income tax return is required for any year that a determination is made by the Internal Revenue Service that affects your City of Detroit tax liability.
Payment Due From My Amended Return
If you file an amended return and a payment is due, it should be submitted at the time of filing the amended return.
- If filing a paper amended return, payment should be remitted with the return.
- If filing electronically, payment should be remitted either:
- By mail, using the CITY Income Tax e-file Payment Voucher (Form 5122); or
- Submitted electronically by direct debit (if supported by the software).
How Long Do I Have to Amend My Return?
If a change on your federal return affects your Adjusted Gross Income (AGI) and/or your exemptions, you must
- File an amended City of Detroit return within 90 days of the date of the Internal Revenue Service’s final determination.
- Include a copy of your amended federal return with all applicable schedules and supporting documents.
- Submit payment of any tax and interest due.
If you are claiming a refund on your amended return, you must file it within four years of the due date of the original return (including approved extensions).
For example, to amend a 2022 return that was not extended, your return must be postmarked by April 15, 2027.