Montana Sales Tax (2026)

Sales Tax in states bordering Montana

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

• IdahoInfo

  Idaho's sales tax rate is 6% (use tax is also 6%). Local sales tax is rare — only certain resort cities and auditorium districts add a local sales tax.

  Verified Jul 7, 2026 · Source: tax.idaho.gov · Full Idaho rule →

• North DakotaInfo

  State sales tax is 5% for most retail sales (a few items carry higher gross-receipts rates: 7% alcohol, 3% new farm machinery and new mobile homes). Cities and counties may add local sales and use taxes, so the combined rate varies by location.

  Verified Jul 13, 2026 · Source: tax.nd.gov · Full North Dakota rule →

• South DakotaInfo

  State sales and use tax is 4.2%. Municipalities may add a general municipal sales tax of up to 2% (plus a 1% municipal gross receipts tax on certain services), so combined rates reach about 6.2% in most towns.

  Verified Jul 18, 2026 · Source: dor.sd.gov · Full South Dakota rule →

• WyomingInfo

  The mandatory statewide rate is 4%; counties add voter-approved option pennies, so combined rates generally run 4%-8% depending on the county where the customer takes possession of the item or service. See the DOR rate charts for current county rates.

  Verified Jul 19, 2026 · Source: excise-tax-div.wyo.gov · Full Wyoming rule →