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Montana Sales Tax Calculator

This free Montana sales tax calculator starts from the state's 0% base rate. Add tax to a net price, or work backwards from a tax-inclusive total. Montana has no general sales tax. Some resort towns charge a local resort tax of up to 3% on lodging, restaurants and similar sales.

Montana Sales Tax Calculator

Results update live as you type. Nothing leaves your browser.

Your Numbers
This is the STATE rate. Where local taxes exist, type that rate into the field instead — the calculator accepts any rate.
Your result
0.00
total including tax
Net amount (before tax)0.00
Tax amount0.00
Gross amount (with tax)0.00
Add this to a free invoice →

State base rate verified October 2026 · Source: Tax Foundation, 2026 sales tax rates (midyear)

How to calculate Montana sales tax in 3 steps

  1. Enter your amount. Type the price you are working with — either before tax or tax-inclusive, depending on what you have.
  2. Pick the rate and direction. The 0% state base rate is pre-filled and editable; choose “Add tax” or “Remove tax”.
  3. Read the split instantly. You get the net amount, the exact tax, and the gross total — ready to quote, invoice, or check a receipt against.

Why getting the Montana split right matters

Whether you are a seller working out what to charge or a buyer checking a receipt, the split matters: net, tax, total. Get any one of them wrong and either you absorb the tax or your customer disputes the invoice. This calculator shows all three instantly, both ways — adding tax to a net price and extracting it from a gross total.

See all 50 states plus DC →

Montana sales tax FAQ

No general sales tax. Some resort towns charge a local resort tax of up to 3% on lodging, restaurants and similar sales, so the calculator starts at 0% and you type in a resort rate if one applies.
Those are exactly the sales a resort tax can touch. Check whether the town is a designated resort area and what rate it charges, then enter that rate here.
Type the local rate into the rate field. For example, a $500.00 sale at a 5% local rate gives $25.00 of tax and a $525.00 total. The calculator accepts any rate you enter.
Yes — unlimited calculations, no signup, no watermark. Everything runs in your browser; nothing you type is uploaded anywhere.
Use the free invoice generator: add your items, choose flat tax, per-line tax or GST mode, and the tax is calculated and shown on the invoice automatically — ready to download as a PDF.

Related calculators

See all 50 states plus DC, try the tax calculator for any rate, or put the result on a free invoice. More state calculators: Missouri · Nebraska.