Montana Earned Income Tax Credit Calculator

A young credit in a region with few

Montana's earned income tax credit is both young and, by regional standards, rare. The state adopted it relatively recently and set the match at 10% of the federal EITC, and the credit is refundable, so it can produce a payment even when your Montana income tax bill is already zero. The mechanics are straightforward: the calculator finds your federal EITC from earned income, filing status, and qualifying children, then applies a flat 10%.

What makes Montana distinctive is its neighborhood. Idaho, Wyoming, North Dakota, and South Dakota do not offer a state-level EITC at all, so a Montana worker who moves a short distance across a state line can lose the benefit entirely. If you recently relocated, do not assume the credit followed you.

At 10% the Montana figure is modest, which is where expectations often go wrong. A single filer with 2 children earning $25,000 will see a federal EITC in the thousands but a Montana credit of only a few hundred dollars, because the state pays one tenth of the federal amount. That is by design, not an error in the estimate. Remember also that the federal credit drives everything: if your investment income exceeds the federal limit or your earned income climbs too high, the federal EITC falls to zero and the Montana credit follows it down. Enter your own numbers above to see both figures side by side before you file.