Do You Qualify for Montana's Reduced Homestead Tax Rate?

Montana now runs two residential tax rates, and the difference roughly doubles the taxable value on a home that does not qualify. Here is how the homestead system works, who qualifies, and what buyers and sellers need to do about it.

Wondering whether your Montana home, or the one you are about to buy, gets the reduced homestead tax rate or the flat 1.9 percent rate? The question decides real money every year, it does not resolve itself, and the answer changes the day a home sells. This guide covers the rates, the qualification tests, the deadlines, and the specific moves buyers, sellers, and second-home owners need to make.

The short version: Montana's 2025 property tax reforms created a two-track system starting in tax year 2026. Owner-occupied homes and long-term rentals that enroll pay graduated rates starting at 0.76 percent. Other residential property that does not qualify, including second homes and short-term rentals, pays a flat 1.90 percent on the full value. Enrollment for 2027 is open now, as of August 2026, and closes March 1, 2027.

What Did Montana Change About Property Taxes in 2026?

House Bill 231 and Senate Bill 542, passed in 2025, overhauled Montana's residential rate structure and created a homestead system beginning in tax year 2026. Qualifying principal residences and long-term rentals pay graduated rates by value tier. Non-qualifying residential property pays a flat 1.90 percent, per the Legislature's official summary and the Department of Revenue's 2026 tax information.

Here is the 2026 rate structure, using the state's $378,000 estimated statewide median home value as the tier anchor:

The rates in this table produce your taxable value, which local mill levies are then applied to, with any special assessments added on top. The classification does not change your mills, but it changes the number the mills multiply, and that is where the money is.

Who Qualifies for the Homestead Rate?

A homestead, in the Department of Revenue's definition, is your principal residence, lived in for at least seven months of the year, owned by an individual, a couple, or a grantor revocable trust, with property taxes paid current. The seven months do not need to be consecutive, and short absences for travel, medical care, or military service do not break qualification as long as the home remains your principal residence.

Two ownership details catch people. First, property held in an LLC or an irrevocable trust does not qualify for the homestead rate even if you live there; the DOR's homestead FAQs limit it to individuals and revocable grantor trusts. Second, when a home has multiple owners, only one of them needs to meet the residency requirement. Anyone weighing a trust or entity structure against the tax classification has a question for an attorney, not a blog post, and the disclaimer at the end of this article means it.

Do Long-Term Rentals Qualify Too?

Yes, and this is the part landlords should read twice. A rental qualifies for the same graduated rates when the property is rented to tenants for 28 days or more at a time, for seven or more months of the year, as the tenant's residence, with taxes current. Unlike homesteads, long-term rentals can be owned by LLCs, corporations, and irrevocable trusts and still qualify.

The 28-day threshold is the line between a long-term rental and a short-term rental in this system. A home rented by the month to a traveling nurse or a relocating buyer waiting on a build can qualify. A home rented by the night or the week cannot, and it pays the flat 1.90 percent.

What Does the Flat 1.9 Percent Rate Actually Cost?

Run the arithmetic on real Gallatin Valley price points and the gap stops being abstract. On an $800,000 home, the graduated homestead rates produce a taxable value of about $6,759. The flat rate produces $15,200, roughly two and a quarter times higher, before a single mill is applied. On a $600,000 home the comparison is about $4,871 against $11,400. On a $1.5 million property it is about $14,459 against $28,500. Whatever your local mills are, they multiply that difference.

This is why the classification question lands hardest at the top of the market. The buyers most affected are the ones purchasing second homes at Gallatin Valley and Big Sky price points, where the flat rate applies to a large value on day one. The mechanics of that market carry their own tax layers, covered in what to know about buying in Big Sky, and the county-level picture is in what property taxes are like in Gallatin County. For a sense of how taxes sit inside the whole affordability picture, how much income it takes to buy here walks the full payment math.

One caution in the other direction: your actual bill depends on local mill levies and any special assessments on the parcel, so treat these figures as the classification difference, not a quote. The county treasurer's bill is the quote.

How Do You Enroll, and When?

Enrollment runs through the Department of Revenue, and the current window is generous: applications for tax year 2027 opened May 4, 2026 and close March 1, 2027, filed online through homestead.mt.gov, which routes to the DOR's homesteads and long-term rentals page. The 2026 window already closed on March 20, 2026, after the state extended the original March 1 deadline when the portal was overwhelmed by last-minute filings.

Many owners never needed to apply at all. Homeowners who received the 2025 property tax rebate and still own and occupy the same home were enrolled automatically, a point the DOR has repeated in statewide coverage of the rollout. Automatic enrollment stops being automatic the moment circumstances change: if you moved, sold, transferred title, or stopped using the home as your principal residence, re-enrollment is on you.

The application asks you to attest that the property meets the criteria, and that attestation has teeth. Filing is quick, but attesting falsely to residency or rental terms carries loss of the classification and, in the DOR's words, significant legal and financial penalties. Answer it straight.

What Happens When You Buy or Sell a Home Mid-Year?

This is the piece of the system built for exactly the conversations happening at closing tables right now, and almost nobody knows it exists. The homestead classification does not travel with the deed. When a home sells, the reduced rate expires at the end of that calendar year, and the buyer has to enroll in their own right for it to continue.

For buyers who purchased in 2026 without enrollment in place, the state built a remedy: the property is taxed at the flat 1.90 percent for 2026, and a buyer who meets the homestead requirements can claim a refund of the difference between the flat rate and the homestead rate between January 1 and May 31, 2027, with property taxes paid current, per the DOR's homestead FAQs. That refund does not file itself, and the window closes.

Sellers have a smaller but real duty here too: telling the buyer the clock exists is the kind of thing that separates a clean transaction from a surprise tax bill twelve months later. Property taxes are prorated at closing in Montana, and the classification the proration is based on is worth a line of conversation before signing, alongside the rest of the numbers in what it costs to close on a home in Montana.

What Should Second-Home Owners Plan For?

If you own a Montana home you live in less than seven months a year and do not rent long-term, the flat 1.90 percent is the designed outcome, not an error to fix. The honest planning move is to carry it as a known cost of ownership: on a $1.2 million second home, the flat rate produces a taxable value of $22,800 against roughly $11,159 under homestead rates, and no application changes that while the use stays the same.

Two paths do change it, and both change the use, not the paperwork. Making the home your principal residence for seven-plus months a year qualifies it as a homestead. Renting it in stints of 28 days or longer, seven-plus months a year, qualifies it as a long-term rental, and that classification accepts LLC ownership. Whether either fits your life and your other tax positions is a conversation for your CPA, because residency changes echo far beyond one property tax bill.

How Do You Check a Property's Status Before You Buy?

Four checks, all doable this week:

1. Ask the listing agent for the property's current tax classification and the most recent tax bill, in writing, so you can see which rate the proration will be built on.
2. Run both-rate math on your actual price using the tier table above, so you know the size of the stake before you negotiate.
3. Use the verify-enrollment tool on the DOR's homestead page to confirm what is actually on file rather than what everyone assumes.
4. Put March 1 on your calendar. Whichever year you buy, the next enrollment deadline is the one date that decides whether the following year bills at 0.76 or 1.90 on your first $378,000.

Buyers who do these four things know more about their future tax bill than most owners learn in their first year.

The Bottom Line

Montana's homestead system rewards one thing: paying attention at the moment of transition. Long-time owners who got the 2025 rebate mostly rolled into the reduced rate automatically. The people with money on the table are buyers, sellers, new landlords, and second-home owners, exactly the people in the middle of a transaction, which is why this deserves ten minutes of attention during due diligence instead of a surprised phone call the following November.

Questions about how the classification lands on a specific Gallatin Valley purchase are welcome any time. After more than a decade of walking buyers through Montana closings, the classification line on a tax bill is now one of the first things worth checking, and it takes minutes to get right.

Frequently Asked Questions

What is Montana's homestead tax rate?

The homestead rate is a set of graduated residential tax rates for qualifying principal residences and long-term rentals, starting in tax year 2026: 0.76 percent on the first $378,000 of market value, 0.90 percent to $756,000, 1.10 percent to $1,511,999, and 1.90 percent above that. Non-qualifying residential property pays a flat 1.90 percent.

How long do you have to live in your home to qualify?

At least seven months of the year, and the months do not need to be consecutive. Short absences for travel, medical care, or military service do not break qualification as long as the property remains your principal residence, you or your revocable trust own it, and property taxes are current.

Do rental properties qualify for the reduced rate?

Long-term rentals qualify when the property is rented for 28 days or more at a time, for seven or more months of the year, as the tenant's residence, with taxes current. Long-term rentals can be owned by LLCs, corporations, or trusts. Nightly and weekly short-term rentals do not qualify and pay the flat rate.

What is the deadline to apply for the 2027 homestead rate?

March 1, 2027. The enrollment window for tax year 2027 opened May 4, 2026, and applications are filed online through homestead.mt.gov, the Montana Department of Revenue's application portal. The 2026 window closed on March 20, 2026 after a deadline extension.

Was everyone enrolled automatically?

No. Homeowners who received the 2025 property tax rebate and still own and occupy the same home were enrolled automatically. Owners who moved, sold, transferred ownership, or changed how the property is used need to enroll or re-enroll themselves, and new buyers are never covered by a seller's enrollment.

What happens if you bought a home in 2026 without enrollment?

The property is taxed at the flat 1.90 percent rate for 2026. A buyer who meets the homestead requirements can claim a refund of the difference between the flat rate and the homestead rate between January 1 and May 31, 2027, and should enroll for the following year so the reduced rate continues.

Do second homes and short-term rentals get the homestead rate?

No. Second homes, short-term rentals, and vacant residential property pay the flat 1.90 percent on full market value. A second home can qualify only if its use changes, either becoming the owner's principal residence for seven-plus months a year or renting long-term in stints of 28 days or more.

Does the homestead rate transfer when a home sells?

No. The reduced rate expires at the end of the calendar year in which the home sells, and the buyer must enroll on their own for it to continue. Buyers should confirm the current classification during due diligence and calendar the next March 1 enrollment deadline.

This article is general information, not legal, tax, or accounting advice. AmeriMont Broker Group is not a law firm or an accounting firm, and nothing here should be treated as advice from one. Laws, tax rules, and programs change, and they vary by state and by situation. Before acting on anything covered here, consult a licensed attorney and/or a certified public accountant in your state for current guidance on your specific circumstances.

Nancy Clark is the Broker and Owner of AmeriMont Broker Group, serving Manhattan, Amsterdam, Churchill, and communities across southwest Montana. With more than $135 million in closed sales and over a decade of experience in Montana real estate, Nancy brings the care of a neighbor and the skill of a seasoned professional to every transaction. Reach her at [email protected] or visit nancyclarkbroker.com.

Nancy Clark
Broker/Owner, AmeriMont Broker Group
Manhattan, Montana
[email protected]
nancyclarkbroker.com