The Line Item Big Sky Buyers Are Leaving Off Their 2026 Budget

A buyer comparing a ski-in home at the Yellowstone Club against one at Spanish Peaks Mountain Club will, reasonably, start with the dues sheets. Both clubs publish real numbers, and both numbers matter. But the figure that moved the most for Big Sky owners this year doesn't appear on either club's fee schedule. It sits inside a Montana tax statute that took full effect on 2026 property tax bills, and it changes the math for the exact kind of buyer who owns property here: someone who doesn't live in Montana seven months a year.

The comparison everyone already runs

Yellowstone Club's publicly reported terms have included an initiation fee of $400,000 plus more than $40,000 in annual dues, on top of a required home purchase of $4 million or more once a member is invited to join. Membership there is by invitation, and the properties themselves range from cabins and townhomes up through ski-in estates typically priced from $6 million to well over $50 million.

Spanish Peaks Mountain Club runs on a published dues sheet rather than an invitation model, and that sheet is worth reading twice. As of December 1, 2025, Social Membership carried a $150,000 deposit and $23,000 in annual family dues, while Signature Golf carried a $300,000 deposit and $30,000 in annual dues, plus a separate $3,750 annual Spanish Peaks Owners Association fee. Two years earlier, the same public sheet dated December 18, 2023 showed Social at a $100,000 deposit and $17,000 in annual dues, with Signature Golf at $200,000 and $24,000. The dues climbed on their own, independent of anything happening in Helena.

That's the comparison most buyers already do, and it's a legitimate one. It just isn't the whole equation anymore.

The number that actually moved

In May 2025, Governor Greg Gianforte signed House Bill 231 and Senate Bill 542, a rewrite of Montana's residential property tax code that phases in over two years. Interim rates applied to 2025 bills. Full implementation lands on 2026 bills, and it splits residential property into two tracks based on how the property is used, not what it's worth.

A property qualifies for the lower "homestead" rate if the owner lives there as a principal residence at least seven months a year, or if it's rented on leases of 28 days or more to a tenant who occupies it for at least seven months annually. Everything else, including the vacation homes, ski cabins, and second residences that make up much of Big Sky's private-club inventory, defaults to a flat 1.9% of assessed value.

The Montana Department of Revenue's own projections, cited in Montana Free Press's ongoing coverage of the law, estimate that homestead-qualifying homes will see roughly an 18% decrease in taxes by 2026 compared to 2024, with qualifying long-term rentals seeing about 22% off. Properties that don't qualify are projected to see a cumulative increase of about 68% over the same period, a jump far larger than the 14% rise those same properties would have faced under the prior tax code.

Parsons Behle & Latimer's legal summary of the law put a dollar figure on the high end: nonresidents, second homes, and short-term rentals valued above $1.5 million will likely see an increase of roughly $8,250 a year, assuming no change in property value or local mill levies. Given the price ranges at Yellowstone Club, Spanish Peaks, and Moonlight Basin, a large share of Big Sky's private-club inventory sits well past that $1.5 million threshold.

The ownership structures that fail the test even when the family lives there

Here's the detail that catches privacy-minded buyers off guard. Montana's revenue department has clarified that homestead treatment is only available to properties owned by individuals, couples, or revocable trusts. Homes held through LLCs or irrevocable trusts don't qualify for the lower rate, regardless of how many months the family actually spends there, unless the property separately meets the long-term rental requirements.

That's a meaningful wrinkle for exactly the kind of buyer drawn to Big Sky's private clubs. Holding a vacation property through an LLC or an irrevocable trust is a common estate-planning and privacy choice among high-net-worth owners, and it's precisely the structure that disqualifies a property from the tax break Montana built for actual residents. A family that spends four months a year at their Spanish Peaks home, held in an irrevocable trust for succession purposes, pays the same 1.9% flat rate as an owner who never sets foot in the state.

Buying doesn't inherit the seller's rate

New rules tied to the law require property owners to notify the department within 30 days of an ownership change. That means a buyer can't assume the previous owner's tax bill, low if the seller had homestead status, carries forward with the deed. Homestead qualification resets with the sale. If you close on a property this year expecting to keep living there, you'll need to apply on your own terms, based on your own occupancy plan, not the seller's.

The timing matters too. The application window for 2026 tax bills ran from December 1, 2025 through March 1, 2026, and that window has already closed. Enrollment for the following tax year has historically followed the same December-to-March pattern, so anyone closing on a Big Sky property this year should check homestead.mt.gov directly for the current 2027 enrollment period rather than assume this year's bill reflects anything they can still influence.

The resort tax sits on top, not instead

None of this replaces Big Sky's existing 4% resort tax, administered by the Big Sky Resort Area District since voters approved it in 1992 and raised it to its current 4% ceiling in a 2020 vote. That tax applies to restaurants, short-term lodging, and other luxury goods and services within the district, not to property assessments, and it has generated more than $131 million over three decades for infrastructure, ambulance service, the community library, and public transit, money that by law stays inside the district boundary. It's a separate mechanism from the property tax change, and it's the reason Big Sky, as an unincorporated area with no city government of its own, can fund services that a typical Montana town would cover through municipal property levies.

The two systems layer rather than offset each other. A second-home owner who dines out in Town Center, books a stay when the house isn't in use, or operates a short-term rental pays the 4% resort tax on top of whatever property tax classification applies to the home itself.

Governor Gianforte, announcing the new rates in a November 2025 statement, framed the reform as a win for residents:

"Our focus has been securing meaningful, long-term property tax relief for Montanans in the place they call home, and we've delivered."

That's an accurate description of one half of the law. The other half, the higher default rate, was built specifically to fall on the properties that make up much of the Big Sky private-club market.

What this means if you're underwriting a purchase this year

If you're comparing Yellowstone Club, Spanish Peaks, or Moonlight Basin properties against homes in other Montana markets, run the numbers with the 1.9% flat rate as your baseline assumption unless you have a genuine plan to occupy the home seven months a year or lease it long-term under the 28-day standard. Confirm whether the property currently carries homestead status, and don't assume it transfers with the sale. If you're holding or planning to hold through an LLC or irrevocable trust for privacy or estate purposes, understand that structure currently disqualifies the property from the lower rate regardless of actual use. And keep in mind that actual bills vary by county, mill levy, and assessed value, so the percentages here are projections from the Montana Department of Revenue, not a guarantee for any specific parcel.

This is general market information, not tax or legal advice. The Department of Revenue's homestead portal and your own tax and legal advisors are the right places to confirm exact figures for a specific property before you write an offer.

Frequently asked questions

Does the 4% resort tax replace the property tax? No. The resort tax is a sales tax on restaurants, lodging, and luxury goods and services within the Big Sky Resort Area District. It's collected separately from property taxes and doesn't affect a home's tax classification.

Can I still buy through an LLC? Yes, but a property held through an LLC currently won't qualify for the lower homestead rate, even with substantial personal use, unless it independently meets the long-term rental standard.

What if I plan to rent the home out long-term instead of using it myself? Leases of 28 days or more, with a tenant occupying the home for at least seven months of the year, can qualify a property for the reduced rate, the same one available to owner-occupants.

When can I apply for homestead status if I close later this year? The window for 2026 bills has closed. Enrollment for the 2027 tax year follows the same general pattern, running from December into early March, so check homestead.mt.gov for the exact current dates before you assume you've missed it.

Big Sky's real estate math has always involved more than a listing price. This year, the tax code is asking the same question the private clubs already ask: how you actually use the property. Getting a clear answer before you close matters more than it did twelve months ago.

If you're weighing a purchase in Big Sky or anywhere across Montana's private-club and ranch markets, Stacie Wells can walk through the full ownership picture, dues, taxes, and all, before you make an offer. Request a Confidential Valuation to start that conversation.