Montana Paycheck Calculator (2026)

How Montana taxes income

Montana taxes income progressively across 2 brackets, from 4.70% on the first dollars to 5.90% above $20,500.

Top rates get quoted; effective rates get paid. Someone earning $60,000 in Montana hands over roughly 5.49% of it to the state, and at $150,000 that rises to 5.74% — both well below the 5.90% headline, because brackets are stair-steps rather than cliffs.

One quirk worth flagging: Montana's top bracket starts at just $20,500, which is low enough that most full-time workers reach the highest rate. In practice the system behaves close to a flat tax of 5.90% for anyone earning a typical salary.

What actually reaches your account

Approximate outcomes across the range: $50,000 gross leaves roughly $38,471 after federal, FICA and $2,704 of Montana tax; $80,000 gross leaves roughly $59,006 after federal, FICA and $4,474 of Montana tax; $120,000 gross leaves roughly $84,786 after federal, FICA and $6,834 of Montana tax. Assumes standard deduction and no pre-tax benefits; every dollar into a traditional 401(k) or HSA comes off both the federal and the Montana calculation.

Cost of living matters as much as the tax rate. Montana runs about 7% below the national average, so $80,000 here has the purchasing power of roughly $86,022 at national-average prices. A lower-tax state with higher housing costs can leave you worse off in real terms.