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 Ottawa County Equalization, Property Description & Mapping and Ottawa County Treasurer.
Effective rate
Michigan property taxes are levied by individual cities, townships, and villages; no single countywide effective property-tax rate is published.
Statement mailing
Payment deadline
2026 Michigan property-tax schedule: summer taxes are generally issued July 1 and due September 14, 2026; winter taxes are generally issued December 1, 2026 and due February 14, 2027; local city, township, and village schedules may vary. Unpaid 2025 taxes were returned to county treasurers March 2, 2026 because March 1 was Sunday; a 4% administration fee and 1% monthly interest apply.
Valuation protest
2026 assessment appeals must first be filed with the local city, township, or village Board of Review during its March 2026 meeting period. The State Tax Commission calendar sets the organizational meeting for March 3, appeal meetings beginning March 9 (with March 10 or 11 permitted locally), and completion by April 6, 2026; local meeting times and notice control. Further Michigan Tax Tribunal deadlines follow the property classification and statutory filing date.
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.