What tax year does this use?

It uses the 2025 IRS federal tax brackets (Rev. Proc. 2024-40), the 2025 standard deduction, and current state effective rates. These are the most recently published official IRS figures.

Does it account for credits like EITC or Child Tax Credit?

No — this is a quick estimator based on income, filing status, withholding, and state. Credits, itemized deductions, and adjustments can change your actual refund significantly.

No. The calculator runs entirely in your browser. Nothing is uploaded or stored.

How is the Montana state tax refund calculated?

Montana applies an approximate effective state income tax rate of 5.75% to taxable income. Your refund is the difference between total federal + state tax owed and what was already withheld.

When will I receive my 2026 refund for Montana?

Most IRS federal refunds arrive within 21 days of e-filing with direct deposit. Montana state refunds typically take 2–8 weeks depending on filing method and state processing volume.

Does this estimator include Montana credits and deductions?

No — it's a quick estimate using the 2025 federal brackets, the standard deduction, and an effective state rate. Credits like EITC, Child Tax Credit, or Montana-specific credits can change your actual refund.

Calculators/Montana Tax Refund Calculator (2026)

Montana Tax Refund Calculator (2026)

Estimate your 2025 IRS federal and Montana state tax refund. Uses an approximate 5.75% effective Montana state rate.

Reviewed by the US Finance Tools Hub editorial team · Last reviewed June 24, 2025

Educational estimate only — not tax, legal, or financial advice. Confirm with a licensed professional.

Inputs

Step 1

Annual income

Filing status

State

Total withholding (federal + state)

Results

Step 2

Estimated balance due

$2,564

Taxable income: $60,000
Federal tax: $8,114
State tax (est.): $3,450
Total tax: $11,564

Standard deduction for Single: $15,000. Estimates only.

About taxes in Montana

Montana levies a state income tax with an approximate effective rate near 5.75% for middle-income earners. Your actual refund depends on bracket placement, credits, withholding, and any local taxes that apply. This calculator uses 2025 IRS brackets (Rev. Proc. 2024-40) and the standard deduction. For exact figures, consult the Montana Department of Revenue and IRS Publication 17.

Frequently asked questions

How is the Montana state tax refund calculated?: Montana applies an approximate effective state income tax rate of 5.75% to taxable income. Your refund is the difference between total federal + state tax owed and what was already withheld.
When will I receive my 2026 refund for Montana?: Most IRS federal refunds arrive within 21 days of e-filing with direct deposit. Montana state refunds typically take 2–8 weeks depending on filing method and state processing volume.
Does this estimator include Montana credits and deductions?: No — it's a quick estimate using the 2025 federal brackets, the standard deduction, and an effective state rate. Credits like EITC, Child Tax Credit, or Montana-specific credits can change your actual refund.