Key Changes for City of Flint Individual Income Tax

• Some due dates will change to align with established federal and state due dates as well as maintain consistency for all Treasury administered city taxes.
• New forms will be introduced, standardizing tax reporting for multiple cities administered by Treasury.
• File City of Flint tax returns electronically – directly with Treasury or with approved tax preparation software (where available) – at no cost.
• For most tax returns, this is optional; mailed City of Flint returns will still be available.
• Individuals with City of Flint, City of Detroit, and/or state of Michigan income tax obligations can file all three tax returns together.  
• Payments for all City of Flint tax types may be made securely online or by check. In-person and phone payments will not be accepted.
• A Form 151, Authorized Representative Declaration (Power of Attorney Form) form must be on file with Treasury before we can disclose information to third parties, including tax preparers.   

Beginning tax year 2026 (the tax return you will file in spring 2027), taxpayers will file their City of Flint income tax return with Treasury.

• City of Flint tax return due date will move from April 30, 2027 to April 15, 2027, which is also the first due date.
• The City of Flint will continue to handle the administration (filing, processing, customer contact, compliance, and collections) for tax years 2025 and prior.

Beginning January 1, 2027, taxpayers will make City of Flint income tax payments to Treasury.

• City of Flint quarterly estimated payments:
  • Due date will move from the 30^th to the 15^th.
  • The first time you will make payments on this new schedule is for tax year 2027 (to apply toward the tax return you will file in spring 2028); the due dates are:
    • First quarter: April 15, 2027
    • Second quarter: June 15, 2027
    • Third quarter: September, 15, 2027
    • Fourth quarter: January 15, 2028

Keep sending tax payments to the City of Flint directly until December 31, 2026. Estimated payments made for tax year 2026 will be transferred to your tax account at Treasury.

An online portal allowing City of Flint taxpayers access to:  

• Make city tax payments electronically using a bank account, debit card, credit card, or digital wallet transactions.
• Bank account transactions are free, other options available for a fee.
• We strongly recommend paying electronically, as it is the fastest and most efficient payment option. If needed, payments may also be submitted by mail using a check.
• File your City of Flint tax return electronically—at no cost—directly through Treasury or with approved tax preparation software (where available).
  • Electronic filing is the fastest and preferred way to file. Paper returns will continue to be accepted by mail.
• Check the status of your city tax refund.
• View city tax information online.