Montana 2026 Tax Changes — What the One Big Beautiful Bill Act (OBBBA ) and State Tax Cuts Mean for Residents
The Double Win: Federal and State Tax Relief
Permanent Federal Relief from OBBBA
- Lower Federal Tax Brackets are PERMANENT: The lower individual income tax rates from the TCJA are here to stay. This is a crucial win for Montana’s working families, tourism professionals, and skilled trades.
- The Federal Standard Deduction is PERMANENT: The higher federal standard deduction is also permanent, simplifying filing and lowering federal taxable income for the majority of households.
- The QBI Deduction is PERMANENT and ENHANCED (Federal Level): The 20% Qualified Business Income (QBI) Deduction is a permanent part of the federal tax code. While Montana does not have a state-level QBI, this remains a massive federal benefit for the state's many small businesses, contractors, ranchers, and tourism operators.
Montana’s New, Lower State Tax Rates
While not new for 2026, Montana’s recent tax reform is a critical piece of the puzzle. The state replaced its old, multi-bracket system with a simpler two-bracket system and lowered the top rate from 6.75% to 5.9%.
👉 Montana Impact: This state-level tax cut provides significant, permanent relief. When combined with the permanent federal cuts from OBBBA, it means Montanans will keep more of their hard-earned money at both the state and federal level.
New Federal Tax Breaks for Montana Residents
- Overtime Deduction: Deduct up to $12,500 ($25,000 for joint filers) of qualified overtime pay—a great benefit for workers in Montana’s construction, trades, and energy sectors.
- Senior Deduction: An additional $6,000 deduction for individuals 65 and older (subject to phase-out).
- Auto Loan Interest Deduction: Deduct up to $10,000 in interest on new personal vehicle loans from 2025-2028.
Montana-Specific Tax Considerations for 2026
A Major Win for Ranching, Agriculture, and Tourism
The permanent 20% federal QBI deduction is a huge benefit for Montana’s core industries. Ranchers, farmers, outfitters, guides, and other tourism-based businesses can continue to rely on this powerful federal deduction to lower their tax burden. This provides much- needed certainty for businesses that are the lifeblood of the Montana economy.
Real Estate and STRs in High-Growth Areas
Retirement Income in Montana
Montana taxes most forms of retirement income, including IRA and 401(k) distributions. The good news is that the permanent lower federal tax rates under OBBBA, combined with Montana’s new lower state rates, reduce the overall tax burden on these withdrawals, leaving more money in your pocket during your retirement years.
What Montana Taxpayers Should Do Now
- Update Your Tax Plan: Your old strategy is obsolete. It’s time to build a new plan based on the dual benefits of permanent federal cuts and Montana's lower state tax rates.
- Integrate Federal and State Planning: Work with a professional who understands how to maximize permanent federal benefits while leveraging Montana’s unique state tax advantages.
- Maximize the Federal QBI Deduction: If you own a ranch, farm, or tourism business, ensure your structure is optimized to claim the full 20% federal QBI deduction.
- Leverage Real Estate Benefits: Plan your real estate investments in markets like Bozeman or Whitefish to take full advantage of permanent 100% bonus depreciation on your federal return.
Montana 2026 Tax FAQ
Does Montana conform to QBI?
No — QBI is federal-only.
Will Montana taxes rise?
Rates are unchanged, but taxable income rises due to federal changes.
Are families affected?
Yes — child credit reductions and higher taxable income reduce refunds.
Are STR owners impacted?
Yes — depreciation and participation rules tighten.
Are retirees affected?
Yes — federal bracket increases increase taxes on withdrawals.
Get Your Personalized 2026 Montana Tax Plan
The tax landscape has permanently shifted in your favor. Don’t operate on outdated assumptions. A personalized strategy session will ensure you are structured to maximize every new and permanent benefit under OBBBA and Montana’s new, lower state tax rates.
Because tax situations vary by individual and business, many Montana residents choose to work with a qualified tax professional. You can explore available Montana tax services here: