Michigan’s summer property tax bill lands around July 1 and must be paid to your local treasurer by September 14. Miss that date and interest starts accruing at 1% per month on the unpaid balance, with a possible 1% administration fee on top. The summer levy is usually the larger of your two annual property tax bills, so understanding what it covers, who can defer it, and how the delinquency clock works is worth a careful read before September rolls around.
What the Summer Bill Actually Charges You For
Your summer bill is not a single tax. It bundles a statewide levy with local millages and, sometimes, project-specific assessments.
The largest statewide piece is the State Education Tax, a flat 6-mill charge on all non-exempt property.1Michigan Legislature. Michigan Compiled Laws 211.903 – State Education Tax Act One mill equals one dollar of tax for every $1,000 of taxable value, so 6 mills on a home with $100,000 in taxable value produces $600 in state education tax alone.
Layered on top are operating millages for your county, city, or township, plus voter-approved school operating millages. The combined summer rate commonly falls between 20 and 40 mills depending on your jurisdiction and what local ballot measures have passed.
You may also see special assessments. These are charges tied to specific improvements like road paving, sewer lines, or street lighting, and they apply only to properties in the defined benefit area. They can appear or increase without a general election, which is why they sometimes surprise homeowners reading a bill line by line.
Every mill is applied to your property’s taxable value, not its market value or its assessed value. If the taxable value on your bill looks wrong, the fix is challenging the assessment, and that has its own deadlines discussed further down.
Due Date and What Late Payment Costs
Summer taxes become a lien on your property on July 1 and are due by September 14. If the deadline falls on a weekend or legal holiday, it shifts to the next business day.2Michigan Legislature. Michigan Compiled Laws 211.44a – Summer Property Tax Levy
After September 14, interest accrues at 1% per month on the unpaid balance, and your local unit may add a 1% property tax administration fee.3Michigan Department of Treasury. Frequently Asked Questions – Property Tax In concrete terms, a payment made between September 15 and September 30 costs 102% of the base tax. By January the figure reaches 106%. Every month you wait adds another percentage point.
Winter taxes are a separate bill. They become a lien on December 1 and are due by February 14.3Michigan Department of Treasury. Frequently Asked Questions – Property Tax If either bill remains unpaid at the end of February, the entire delinquent amount is turned over to the county treasurer on March 1, and the costs escalate quickly from there.
Deferring Your Summer Payment
Michigan law lets certain homeowners push the summer payment to February 15 of the following year with no penalty or interest.4Michigan Legislature. Michigan Compiled Laws 211.51 – Summer Tax Deferment That effectively consolidates your summer and winter obligations into one payment window.
To qualify, you must occupy the property as your principal residence and meet at least one of these conditions:
- You are 62 or older, or the unremarried surviving spouse of someone who was 62 or older at death.
- You are totally and permanently disabled, blind, paraplegic, quadriplegic, an eligible serviceperson, an eligible veteran, or an eligible surviving spouse of a veteran.
- Your total household income for the prior year was $40,000 or less.
Agricultural property can also qualify under a separate test comparing farm gross receipts to household income.4Michigan Legislature. Michigan Compiled Laws 211.51 – Summer Tax Deferment
To claim the deferment, file Form 471 (Application for Deferment of Summer Taxes) with your local treasurer by September 15 or by the date the tax would otherwise begin accruing interest, whichever comes later.4Michigan Legislature. Michigan Compiled Laws 211.51 – Summer Tax Deferment File early. Confirming your deferment status before September 14 avoids any dispute about whether interest started running. If you defer and then miss the February 15 deadline, standard late penalties can begin from that point forward.
What Happens If You Let It Go Unpaid
Michigan’s forfeiture and foreclosure process runs on a three-year timeline. Each stage adds costs, and the window to fix the problem narrows sharply after year one.
- Year one, delinquency. Unpaid taxes are returned as delinquent to the county treasurer on March 1. A 4% county administration fee is added, and interest continues at 1% per month.5Michigan Department of Treasury. Real Property Tax Forfeiture and Foreclosure Process
- Year two, forfeiture. If taxes remain unpaid by the following March 1, the property is forfeited to the county treasurer. A $175 fee is added and the interest rate jumps to 1.5% per month, applied retroactively to the original delinquency date.5Michigan Department of Treasury. Real Property Tax Forfeiture and Foreclosure Process
- Year three, foreclosure. Redemption rights expire on March 31 of the third year. Public auctions begin the third Tuesday in July, and the former owner loses all rights to the property.5Michigan Department of Treasury. Real Property Tax Forfeiture and Foreclosure Process
A summer bill you ignore in September of one year can put your ownership at risk by spring roughly two and a half years later. Catching up during year one is far cheaper than waiting until forfeiture triggers the retroactive interest bump.
Ways to Reduce What You Owe
Principal Residence Exemption
If you own and occupy your home as your primary residence, the Principal Residence Exemption removes up to 18 mills of local school operating tax from your bill.6Michigan Department of Treasury. Principal Residence Exemption On a home with $100,000 in taxable value, that is $1,800 a year. You still pay the 6-mill State Education Tax, but the additional school operating millage comes off.7Michigan Legislature. Michigan Compiled Laws 211.7cc – Principal Residence Exemption
The exemption is not automatic. You file an affidavit (Form 2368) with your local assessor, and once granted it stays in effect until you sell the home or stop using it as your primary residence. Rental properties, vacation homes, and second residences do not qualify. If you recently purchased and haven’t filed, you could be overpaying by thousands of dollars.
Homestead Property Tax Credit
The Homestead Property Tax Credit, claimed on your Michigan income tax return using Form MI-1040CR, refunds a portion of property taxes when they consume too much of your income. For 2026, you may qualify if your total household resources are $71,500 or less and your home’s taxable value is $165,400 or less.8Michigan Department of Treasury. Michigan Taxpayers Encouraged to Check Eligibility for Homestead Property Tax Credit Renters also qualify, since a portion of rent is treated as an indirect property tax payment.
Disabled Veteran Exemption
Veterans rated 100% permanently and totally disabled by the U.S. Department of Veterans Affairs, or certified as individually unemployable, can exempt their entire homestead from property taxes. The unremarried surviving spouse of a qualifying veteran can continue the exemption. You apply by filing with your local assessor between January 1 and December 31 of the tax year. Once granted, the exemption remains in effect without annual reapplication unless rescinded or denied.9Michigan Legislature. Michigan Compiled Laws 211.7b – Disabled Veteran Exemption
If You Think the Taxable Value Is Wrong
When a summer bill looks too high, the culprit is often the taxable value the assessor assigned, not the millage rate. Michigan gives you a structured appeal process, but the deadlines fall months before the summer bill arrives.
Your local Board of Review meets starting the second Monday in March each year. You must appear during that meeting window, or submit a written protest where allowed, to challenge your assessed value. Assessment notices go out in mid-February, giving you roughly three weeks to review the figures, gather comparable sales data, and schedule an appointment. The Board can raise, lower, or confirm your assessment, and it also handles poverty exemption requests and corrections to taxable value.
If the Board’s decision does not satisfy you, the next step is the Michigan Tax Tribunal. Residential owners use the Small Claims Division, and the filing deadline is typically July 31 for residential property. Appealing through the March Board of Review is mandatory before the Tribunal will hear your case; skip the March meeting and you lose your right to challenge the assessment for that tax year.
How to Pay the Bill
Most local treasurers accept several payment methods. Mailing a check or money order works, but mail early enough to ensure delivery before September 14, because the postmark date alone may not satisfy your local office. Many township and city halls also have 24-hour drop boxes for after-hours delivery.
Paying at the counter gets you an immediate stamped receipt, which is worth the trip if you want a clean paper trail. Online payment portals are widely available and typically charge a processing fee around 2.85% for credit and debit card payments, while electronic check payments through the same portals often carry no fee. On a $3,000 summer bill, the card processing fee runs roughly $85. Whichever method you use, keep the receipt or confirmation number in case a payment is ever disputed or misapplied.
If Your Taxes Are Paid Through Escrow
If you have a mortgage, your lender likely collects property taxes through an escrow account. Under federal rules, your servicer must analyze this account at least once a year to confirm the balance will cover upcoming tax and insurance disbursements.10Consumer Financial Protection Bureau. 12 CFR 1024.17 – Escrow Accounts If your summer bill jumped, whether because of a millage change, a taxable value reset after purchase, or the loss of your Principal Residence Exemption, the annual analysis will usually reveal a shortage. The servicer then raises your monthly payment and gives you the option to pay the shortfall as a lump sum or spread it over 12 months.
Supplemental or corrected bills that arrive outside the normal cycle may not be paid automatically. Contact your servicer before paying out of pocket, because some will disburse from escrow if you forward the bill, and paying twice creates its own reconciliation headache.