Montana LLC tax calculator
See what your Montana LLC owes both ways — as a default pass-through and as an LLC taxed as an S-corporation, with Montana's 5.9% state income tax pre-filled.
Your LLC
S-corp election saves
$4,653
Before payroll-filing and accounting costs, typically $1,200–$2,500 a year.
What do you do? Tap one to tailor this.
Default LLC (Schedule C)
- Self-employment tax
- $16,955
- Federal income tax
- $11,057
- State tax
- $7,080
- Total tax
- $35,092
LLC taxed as an S-corp
- Payroll tax on salary
- $9,180
- Distribution (no payroll tax)
- $60,000
- Federal income tax
- $14,179
- State tax
- $7,080
- Total tax
- $30,439
Don't miss your next IRS payment
Email me S-corp election saves about $4,653 a year and one reminder a week before it's due. No account, no spam.
Montana self-employed tax at a glance
| State income tax | Graduated, up to 5.9% |
|---|---|
| Self-employment tax | 15.3% federal (12.4% Social Security + 2.9% Medicare) |
| Social Security wage base | $184,500 (2026) |
| Local income tax | No broad local income tax on business profit |
| Quarterly estimate dates | Federal and state: Apr 15, Jun 15, Sep 15, Jan 15 |
| Typical total rate on $100k profit | About 27.8% (~$27,815) |
What Montana tax looks like at four profit levels
Single filer, standard deduction, 20% QBI deduction applied, Montana rate of 5.9% included. Your own number depends on filing status and deductions — use the calculator above for that.
| Net profit | Self-employment tax | Federal income tax | Montana tax | Total | Set aside monthly |
|---|---|---|---|---|---|
| $50,000 | $7,065 | $2,370 | $2,950 | $12,385 (24.8%) | $1,032 |
| $75,000 | $10,597 | $4,600 | $4,425 | $19,622 (26.2%) | $1,635 |
| $100,000 | $14,130 | $7,786 | $5,900 | $27,815 (27.8%) | $2,318 |
| $150,000 | $21,194 | $15,964 | $8,850 | $46,008 (30.7%) | $3,834 |
LLC taxes in Montana
Montana uses two brackets topping out at 5.9%.
An LLC is a legal structure, not a tax structure. By default the IRS taxes a single-member Montana LLC like a sole proprietorship, so every dollar of profit carries the 15.3% self-employment tax on top of income tax.
An S-corp election moves part of that profit out of payroll tax by paying yourself a defensible salary. The savings are federal — Montana income tax still applies to the whole profit — and they only clear the cost of payroll, quarterly 941s and an 1120-S return once profit is high enough.
Frequently asked questions
How much tax does an LLC pay in Montana?
A default Montana LLC pays no entity-level federal tax — profit flows to your personal return, where it faces 15.3% self-employment tax and federal income tax after the QBI deduction. Montana uses graduated brackets topping out near 5.9%, layered on top of federal income tax and the 15.3% self-employment tax.
Is an S-corp election worth it in Montana?
The savings come from federal payroll tax, not Montana income tax, which still applies to all profit. The crossover is usually around $80,000–$100,000 of profit, and any state franchise or LLC fee pushes it slightly higher.
What is a reasonable S-corp salary in Montana?
What you would pay an unrelated person to do your job in your Montana market, supported by pay data and hours worked. An artificially low salary to shift profit into distributions is a well-known audit trigger.
Does an Montana LLC owe quarterly estimated taxes?
Yes — the owner makes federal estimates once expected tax reaches $1,000, and Montana runs a parallel state estimate schedule.
Are there local taxes on LLC income in Montana?
Montana does not layer a broad local income tax on pass-through business income, so state and federal are the two layers to plan for.
Estimates only, using projected 2026 federal figures and state rates for planning. Not tax advice.
More Montana calculators
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