State Tax Guide · Montana · 2026
Montana Income Tax: Complete Employee Guide (2026)
Understand the modeled Montana withholding method, source-backed rates, deductions, and take-home pay examples for employees.
Does Montana have income tax?
Montana levies state income tax on wages using a payroll-period percentage-method schedule.
Montana tax rates
Payroll-period percentage-method schedule. For the sourced default single-filer biweekly path, the marginal rate above $2,446.00 per paycheck is 5.65%.
Official source: https://revenuefiles.mt.gov/files/Forms/Montana_Employer_and_Information_Agent_Guide_with_Tax_Tables.pdf
Take-home pay examples
These examples use the calculator engine for a single filer paid biweekly with a standard W-4 and no pre-tax deductions.
| Annual salary | Montana withholding | Net annual | Net biweekly |
|---|---|---|---|
| $40,000 | $1,144 | $33,176 | $1,276.00 |
| $60,000 | $2,080 | $48,310 | $1,858.08 |
| $80,000 | $3,172 | $61,938 | $2,382.23 |
| $100,000 | $4,316 | $74,864 | $2,879.38 |
| $150,000 | $7,124 | $106,667 | $4,102.58 |
How to reduce Montana tax withholding
Traditional 401(k) contributions and HSA contributions are available as modeled pre-tax inputs in the calculator. State-specific HSA conformity is not encoded as a dedicated data field, so check current Montana guidance or consult a qualified tax professional before relying on HSA treatment.
The encoded default withholding method does not include a separate single-filer standard-deduction field.
Key differences from federal withholding
Federal income-tax withholding is calculated separately using IRS Publication 15-T. Montana withholding follows the encoded state method described above, with its own rates, deductions, and documented limitations. Local wage taxes, where supported, are separate from the state amount.
Montana salary after taxes
Browse state-specific salary pages for common annual salaries from $40,000 to $200,000.
Calculate your personalized Montana take-home pay.
Calculate your Montana take-home →Frequently Asked Questions
Does Montana have an income tax?
Montana levies state income tax on wages using a payroll-period percentage-method schedule.
What is the Montana income tax rate for 2026?
Montana uses a payroll-period percentage-method schedule. For the sourced default single-filer biweekly path, the marginal rate above $2,446.00 per paycheck is 5.65%.
How much Montana tax on $75,000?
For the modeled default single-filer path, estimated Montana withholding on a $75,000 salary is $2,886 per year, or $111.00 per biweekly paycheck.
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