How LLC Owners Save on Taxes in 2026

MT Montana Tax Write-Offs & Strategies — 2026 Guide
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STATE TAX PROFILE · 2026
MT
Montana
5 state-specific strategies · Top rate: 5.9%
KEY TAX FACTS
PTET Available · No Bonus Dep.
2026 Tax Guide →
Individual Income Tax Rate
5.9%
Capital Gains Rate
4.1% (preferential rate)
PTET Election Available
Yes
✓ SALT Workaround Available
Bonus Depreciation Conformity
Does Not Conform
⚠ Add-Back Required
BUSINESS & CORPORATE TAX NOTE

Montana corporate income tax is 6.75%. Does not conform to federal bonus depreciation. No sales tax.

Key Planning Insight:

Montana has no sales tax and taxes capital gains at a preferential 4.1% rate (vs 5.9% for ordinary income). PTET election available. The state does not conform to bonus depreciation.

These strategies are especially powerful or unique in Montana. Click any strategy to learn more.

Choosing the right business structure is the single biggest tax decision you'll make. Here's what Montana LLC and S-Corp owners need to know.

Montana LLC Formation
Montana LLCs are taxed as pass-through entities by default. All profits flow to your personal return and are taxed at 5.9%. Electing S-Corp status can significantly reduce your self-employment tax burden.
LLC vs. S-Corp in Montana
Montana offers a Pass-Through Entity Tax (PTET) election — a major advantage for LLC and S-Corp owners. By paying state income tax at the entity level, you bypass the $10,000 federal SALT deduction cap and deduct the full state tax bill on your federal return.
Top LLC Write-Offs in Montana
Montana LLC owners can deduct: business expenses (IRC §162), home office (IRC §280A), vehicle mileage (IRC §179), Section 179 equipment expensing, retirement contributions (Solo 401k or SEP-IRA), health insurance premiums, and business meals. Note: Montana does not conform to federal bonus depreciation — an add-back on your state return may be required.
Montana Business Tax Note
Montana corporate income tax is 6.75%. Does not conform to federal bonus depreciation. No sales tax.

These federal strategies apply to Montana residents and business owners. Click any strategy to see full details, savings estimates, and eligibility requirements.

Montana Tax Write-Off FAQs

Common questions about Montana LLC taxes, S-Corp elections, and business write-offs — answered by Uncle Kam's tax advisors.

WHAT MOST MONTANA BUSINESS OWNERS DON'T KNOW
  • The Montana PTET election can save S-Corp and LLC owners thousands by bypassing the $10,000 SALT cap — most accountants don't file it proactively.
  • Montana does NOT conform to federal bonus depreciation — you may need a state add-back, which many taxpayers miss.
  • Most taxpayers leave the QBI deduction unclaimed — it reduces taxable income by up to 23% starting 2026 under the OBBBA.
Who Uses This Strategy

This state guide is commonly used by the following taxpayer profiles. Click to see all strategies for your situation.

Your Biggest Missed Deduction Is Probably Listed Above

Uncle Kam clients save an average of $5,000–$40,000/year. The strategies that make that possible are unlocked on a free strategy call.

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