Montana Paycheck Calculator
Montana overhauled its withholding system in 2024: gone are Montana-specific allowances and deductions. Instead, a 3-band schedule (0%, 4.7%, and — starting 2026 under House Bill 337 — a lowered 5.65% top rate) applies directly to wages, with the 0% band sized to match the federal standard deduction for your filing status.
How Montana taxes your paycheck in 2026
- Top rate
- 5.65% (down from 5.9%, effective 2026)
- Zero-rate band
- $16,100–$32,200/yr depending on filing status
- Allowances
- None — Montana dropped its allowance system in 2024
2026 Montana withholding rate schedule (single / MFJ both working, annual)
Rendered from the same data file the calculator computes with.
| Taxable income | Rate |
|---|---|
| $0 – $16,100 | 0% |
| $16,100 – $63,600 | 4.7% |
| Over $63,600 | 5.65% |
Montana paycheck FAQs
Did Montana's top tax rate change for 2026?
Yes — House Bill 337 lowered the top withholding rate from 5.9% to 5.65%, effective January 1, 2026.
Does Montana still use personal exemptions for withholding?
No. Since 2024, Montana no longer uses Montana-specific allowances or a separate standard deduction — withholding now runs directly on wages using a schedule whose 0% band matches the federal standard deduction.
How does a married couple with two incomes get taxed differently in Montana?
A married employee can elect Form MW-4 Line 2 if both spouses work, which uses the narrower Single-filer bracket instead of the wider one-income Married bracket, avoiding under-withholding.
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Tax data verified 2026-07-21 against the official source. See our methodology.
