The Nov. 1, 2026 Homestead Deadline: Which Oakland County Homeowners Actually Need to Act

Michigan's Principal Residence Exemption is worth up to 18 mills a year, but this weekend's deadline only matters for some owners. Whether it matters for you depends on when you bought, who owned the house before you, and which school district you're in.

By BIG Real Estate | October 30, 2026

Update, November 2026: This article was written before the November 1, 2026 filing deadline, which has now passed. The next deadline is June 1, 2027, which covers the 2027 summer bill and every bill after it. If you missed November 1, the late-claim rules below still let you recover the exemption for the current year plus the three before it.

Michigan sets two filing deadlines each year for the Principal Residence Exemption, which many owners still call the "homestead exemption." The second one is November 1, and this year it falls on a Sunday. Michigan's general rule for deadlines that land on a weekend points to Monday, November 2 instead.

Most coverage of the deadline stops at "file by November 1." For Oakland County, three facts in the statute and in local tax-rate tables make the picture more specific:

• Many recent buyers are already covered for 2026 by the seller's exemption.
• In some school districts, the December tax bill doesn't include any school operating tax.
• An owner who misses the deadline can usually still recover the money.

The owners who should act now are a narrower group, and some of them have a lot at stake.

What the exemption is worth

Under MCL 211.7cc, a home you own and occupy as your principal residence is exempt from the local school district's operating tax, up to 18 mills. One mill is $1 per $1,000 of taxable value, so the full exemption is worth about $1,800 a year for every $100,000 of taxable value.

The effect is easiest to see by putting the two rates side by side. These are the 2026 summer totals for the same Troy address, as published in the City of Troy's 2026 millage table (mills, with the exemption vs. without it):

• Troy School District: 29.1308 with the exemption, 37.0036 without — a difference of 7.87 mills
• Royal Oak Schools: 28.5871 with the exemption, 45.7477 without — a difference of 17.16 mills

The two districts show very different summer gaps. One reason is that some districts levy a small "hold harmless" millage that only exempt homes pay (Troy School District: 1.2051 summer mills in 2026). The bigger reason is timing, which is what makes the November deadline matter in one district and not the other.

The two deadlines

The statute lets an owner file the affidavit (Treasury Form 2368) with the city or township assessor:

• by June 1, which covers that year's summer levy and every levy after it; or
• by November 1, which covers that year's winter levy and every levy after it.

The affidavit has to say that you own and occupy the home on the date you sign it. A married couple filing a joint Michigan return gets one exemption. Royal Oak's homeowner affidavits page and Novi's exemption page give the same two dates and form numbers.

Why November 1 matters in Troy and not in Royal Oak

A school district's 18 non-homestead operating mills can appear entirely on the July bill, or be split between the July and December bills. Oakland County districts handle this both ways. The list below is based on rate sheets published by the cities that collect the taxes:

• Troy: 9 summer / 9 December (City of Troy 2026 summer table; 2019 July and December tables)
• Avondale: 9 summer / 9 December (City of Troy; City of Auburn Hills 2025 winter sheet: "billed 50% in the summer")
• Bloomfield Hills: 9 summer / 9 December (City of Troy 2019 July and December tables)
• Lamphere: about 9 summer / 9 December (City of Troy 2019 July and December tables)
• Rochester: 50% summer (City of Auburn Hills 2025 winter sheet)
• Southfield: 9 summer / 9 winter (City of Southfield 2025 rate sheet)
• Birmingham: split, "partial Birmingham School" on both bills (City of Birmingham Treasurer)
• Royal Oak, Berkley, Clawson: all summer (City of Royal Oak 2025 summer and winter rate sheets)
• Oak Park: all summer (City of Southfield 2025 rate sheet)
• Warren Consolidated: all summer (City of Troy 2026 summer table)

In an all-summer district, the December bill has the same rates with or without the exemption. Royal Oak publishes a single "Homestead and Non-Homestead" winter rate table. If you are in Royal Oak, Berkley, Clawson or Oak Park schools, filing by November 1 changes nothing on this December's bill. The deadline that protects your money is June 1, 2027, for next summer's bill.

In a split district, about half of the 18 mills lands on the December bill. Suppose a home in Troy, Rochester or Southfield schools is taxed on $190,000 of taxable value without the exemption. Its December bill would include roughly $1,700 of school operating tax (9 mills × $190) that an exempt home doesn't pay.

The list covers the districts whose rates we could confirm from municipal documents. Districts can cross city lines, and the billing split is set locally, so check your own bill or ask your assessor. Districts we haven't listed, including Ferndale, Hazel Park, Madison and Walled Lake, may handle it either way.

Bought this year? The seller's exemption probably covered you

This is the part most deadline reminders leave out. Under subsection (4) of the statute, an existing exemption stays on the property until December 31 of the year in which it is transferred. If you bought from someone who lived in the house and had the exemption, your 2026 summer and December bills are already at the exempt rate, whatever you have or haven't filed.

What you still need to do is make sure your own affidavit is on file before next year, by June 1, 2027 at the latest. The statute requires the person who prepares the closing statement to give buyers the affidavit and rescission forms at closing, and to file them if asked. Many buyers signed one at the closing table and don't remember. It's worth a call to the assessor to confirm it was received.

Who should act before November 1

The owners who gain the most from this weekend's deadline are those whose home wasn't exempt this year. These are typically:

• Buyers of a former rental or investor-owned home. The seller had no exemption to pass along.
• Buyers of new construction. A newly built home, or a lot, had no owner-occupant to claim it. We covered this case in our new-construction tax guide.
• Owners who never filed, for example after inheriting a home and moving into it, or after moving back into a house they had been renting out.

If you are in a split-billing district, filing by November 1 removes the December portion. In every district, it also puts the exemption in place for next summer.

You have to own and occupy the home when you sign. An owner who moves in after November 1 can't claim the 2026 winter levy. The first bill that can be exempt is the 2027 summer bill, and the deadline for that is June 1, 2027.

Missed it? The money is usually recoverable

Subsection (19) of the statute lets an owner who owned and occupied the home within the filing period, but whose exemption wasn't on the tax roll, file the same affidavit later. The claim can cover the current year plus the three before it. If that creates an overpayment, subsection (23) requires the local unit or county treasurer to issue a rebate within 30 days of the exemption being granted, without interest.

Two practical consequences follow:

1. The weekend deadline isn't a cliff for someone who already lives in the home. Michigan's general rule for statutory deadlines, MCL 8.6, extends a fixed day that falls on a Sunday to the next day that isn't a weekend or legal holiday. That points to Monday, November 2. Assessing offices such as Novi's keep Monday–Friday hours, so confirm with yours how it applies the rule. If you miss it, the late-filing provision is the backstop.
2. It's worth checking past bills, not only this year's. An owner who has lived in a home for years without the exemption on the roll can recover the difference for the current year plus the three before it. At 18 mills on $150,000 of taxable value, that's about $2,700 a year.

The other direction: when the exemption has to come off

The exemption works both ways, and the cost of keeping it when you shouldn't is real.

• Moving out or renting the home. The statute requires the owner to rescind within 90 days after the home stops being a principal residence (Form 2602). If the assessor later denies the exemption, the denial can reach back through the current year and three prior years, with interest at 1.25% per month.
• Selling before you buy. If you buy a new home before the old one sells, a conditional rescission (Form 4640) can keep the exemption on the old home for up to three years, as long as it is vacant, for sale, not leased and not used for business.
• Winters elsewhere. You lose eligibility for a year if you claim a substantially similar exemption in another state, such as a Florida homestead exemption, or if you file a resident income tax return in another state. Claiming both carries a $500 penalty on top of the lost exemption. Oakland County owners who split the year should look at this before filing paperwork in a second state.

A short checklist

1. Find out whether the exemption is on your home now. Your tax bill, your city's online parcel records or a call to the assessor will tell you.
2. Bought in 2026 from an owner-occupant? Confirm your own Form 2368 is on file before June 1, 2027. Your 2026 bills were likely already exempt.
3. Bought a former rental or a new build, or never filed? File Form 2368 now. In Troy, Avondale, Bloomfield Hills, Lamphere, Rochester, Southfield and Birmingham schools, it affects this December's bill.
4. Lived there for years without it? Ask the assessor about a late claim covering the current year plus the three before it.
5. Moving out, renting or claiming another state's exemption? Rescind, or file a conditional rescission, before the assessor finds it first.

The takeaway

November 1 is a real deadline, but for many Oakland County homeowners it isn't the one that decides the money. A 2026 resale buyer is usually covered through December 31 by the seller's exemption. An owner in Royal Oak, Berkley, Clawson or Oak Park schools has no school operating tax on the December bill to save. The owners who have the most to gain this week are those in split-billing districts whose homes weren't exempt this year. For everyone, the costly mistakes are never filing at all and keeping an exemption after the home stops being their residence.

This article is general information about Michigan property tax law and local billing practices as of October 30, 2026. It isn't tax or legal advice. Millage rates and billing splits change each year; confirm your own status and rates with your city or township assessor and treasurer.