Montana LLC Taxes — Step 8 of 8
Here's the full tax picture: your LLC is pass-through by default, so profits flow to your personal return, where you'll owe federal income tax, self-employment tax, and Montana's own state income tax (there's no sales tax, but income tax is real). Let's break down exactly what you'll pay, with an estimator to run your own numbers.
By default, a Montana LLC is pass-through — it pays no federal or state income tax itself; profits flow to your personal return, where you owe federal income tax + 15.3% self-employment tax + Montana state income tax. Montana's 2026 state tax uses two brackets: 4.7% and 5.65%. There's no state sales tax, but income tax applies to all Montana residents regardless.
- Default tax
- Pass-through
- Federal income tax
- Yes
- Self-employment
- 15.3%
- MT income tax
- 4.7% / 5.65%
- Sales tax
- None
- This step
- Final 🎉
- Overview
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How a Montana LLC Is Taxed
By default, the IRS doesn't tax an LLC as its own thing — it "passes through" the profits to the owners, who report them on their personal returns. How that works depends on how many members you have:
Treated as a "disregarded entity." You report business profit on Schedule C with your personal Form 1040.
Treated as a partnership. The LLC files Form 1065 and issues each member a Schedule K-1 for their share.
On your share of the profit, you'll generally owe three taxes:
- Federal income tax — at your personal marginal rate, after the standard deduction and the 20% QBI deduction many LLC owners qualify for.
- Self-employment tax (15.3%) — covering Social Security and Medicare on your active business earnings (half is deductible).
- Montana state income tax — a two-bracket system for 2026: 4.7% on lower income and 5.65% above the threshold.
Montana LLC Federal + State Tax Estimator
Enter your expected annual net profit and filing status for a rough estimate of your federal income tax, self-employment tax, Montana state tax, and take-home:
Simplified 2026 estimate using the standard deduction, a simplified 20% QBI deduction, self-employment tax (half deductible), and Montana's two-bracket state schedule. Ignores credits, other income, and local resort taxes. For planning only — not tax advice. Confirm with a CPA.
Montana's State Income Tax
Montana simplified its income tax to two brackets starting with tax year 2024, cutting the old seven-bracket system down considerably. For 2026:
- 4.7% applies to taxable income up to $47,500 (single) or $95,000 (married filing jointly).
- 5.65% applies above that threshold — down from 5.9% in 2025, with a further drop to 5.4% scheduled for 2027.
- Montana starts from your federal taxable income — it conforms closely to federal rules, including the standard deduction, then applies its own bracket rates.
No sales tax doesn't mean no taxMontana's "no sales tax" headline is real and genuinely useful for retail businesses — but it's easy to mistake it for "low tax overall." Montana's income tax rate is close to the national average, and every dollar of LLC profit still gets taxed at the state level. Budget for it the same way you would in any income-tax state.
Could an S-Corp Election Save You Money?
Once your LLC earns a healthy profit, electing S-corporation tax status can lower your self-employment tax. As an S-corp, you pay yourself a reasonable salary (subject to payroll taxes) and take the rest as distributions, which aren't subject to the 15.3% self-employment tax.
- File Form 2553 with the IRS to elect S-corp status (this is the S-corp election — not Form 8832, which is for C-corp treatment).
- Generally worth considering once net profit is consistently around $60,000–$80,000+, where SE-tax savings outweigh the added payroll and admin cost.
- Run the numbers with a CPA — payroll, reasonable-salary rules, and extra filings mean it isn't automatically a win for everyone.
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From naming your LLC to understanding your taxes, you now know exactly how to start and run a Montana LLC. The last move is the easiest: file it. Compare the top formation services, or go straight to our #1 pick.
Montana LLC Taxes — FAQ
Ahmad Adil is the founder and CEO of LLC School. The tax guidance here — pass-through treatment by default, federal income and self-employment tax, Montana's 2026 two-bracket income tax (4.7%/5.65%), and the Form 2553 S-corp election (distinct from Form 8832) — reflects current IRS and Montana Department of Revenue rules. This is educational information, not tax advice; consult a CPA for your situation.
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