2026 fiscal calendar
Know the tax date before it becomes a penalty date.
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The verified record below separates published figures from dates that require confirmation with Ingham County Department of Equalization & Tax Mapping.
Effective rate
Statement mailing
Payment deadline
2026 Michigan schedule: summer tax notices are generally sent in early July and payment is generally due by September 14 (or a different date under a local charter); winter due dates vary by local unit. Unpaid local taxes move into delinquency under the Michigan statutory schedule. Michigan Department of Treasury Bulletin 11 of 2025, Property Tax and Equalization Calendar for 2026: 2026 assessment/tax dates are governed statewide, while local city/township treasurers set local bill dates.
Valuation protest
2026 assessment protests must be made to the local city/township Board of Review; the March Board of Review begins March 9, 2026, but local meeting and petition deadlines vary. A county equalization appeal to the Michigan Tax Tribunal is generally due within 35 days after county adoption. Michigan Department of Treasury Bulletin 11 of 2025, Property Tax and Equalization Calendar for 2026: 2026 assessment/tax dates are governed statewide, while local city/township treasurers set local bill dates.
Critical payment warning
Do not assume a grace period.
The verified county record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat the published payment deadline as a hard operational date and retain your receipt or confirmation number.
Read the calendar in order
From assessment to collection
1. Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
2. Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
3. Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.