Idaho (ID) Sales Tax Calculator (2026)
Calculate sales tax in Idaho. The statewide base rate is 6%. Enter an amount and add your local (county or city) rate to see the combined rate and total.
Example: with Amount (pre-tax) 100 · Local rate (county / city) 0.03 → Total with tax: $106.03.
Computed by the calculator below using its default values. Change any input to see your own numbers.
Idaho tax snapshot
In Idaho, the statewide sales-tax base rate is 6% — the 19th-highest of the 50 states + DC, versus a national average near 5.11%. By the other measures, Idaho property tax is about 0.63% (the 38th-highest) and its sales-tax base is 6% (the 19th-highest); idaho levies a state income tax. For context, New Jersey has the highest effective property tax (2.23%) and Hawaii the lowest (0.27%); California has the highest statewide sales tax (7.25%) and Oregon has none (0%).
Compare across Idaho: Paycheck · Property tax · Sales tax.
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Check it outHow Idaho sales tax works
Idaho charges a statewide base sales tax of 6%. Counties and cities often add a local rate on top, so your combined rate can be higher than the base. Enter your local rate above to get the full amount. Rates change — confirm the current figure with the Idaho Department of Revenue before relying on it.
Sales tax by state
Jump to your state’s calculator:
How it’s calculated
Sales tax = purchase amount × (state base rate + local rate). Your combined rate is Idaho’s state base rate plus any county or city tax you enter.
State base rate as of the latest published rates; local rates vary by jurisdiction and change over time. Confirm your local combined rate. Estimate only.
Results update as you type and are estimates, not professional advice — verify important decisions with a qualified professional.
Idaho sales tax in 2026 at a glance
Idaho’s statewide sales tax is 6% for 2026. Local rates add a population-weighted average of 0.03% (up to 3% in the highest jurisdictions), bringing the combined average to 6.03% — #37 of the 50 states and D.C..
| State rate | 6% |
| Average local rate (population-weighted) | 0.03% |
| Maximum local rate | 3% |
| Combined average | 6.03% |
| National rank (combined) | #37 of 51 |
Source: Tax Foundation, “State and Local Sales Tax Rates, 2026” (rates as of January 1, 2026). Local averages are population-weighted.
Worked example
A $100 purchase in Idaho has $6.00 in sales tax at the 6% base rate, for a $106.00 total before any local tax.
Common mistakes
- Adding only the state base rate and forgetting county or city taxes on top.
- Applying the rate to a tax-included total instead of the pre-tax price.
Frequently asked questions
What is Idaho’s sales tax rate in 2026?
The state rate is 6%. Local rates average 0.03% on top, and reach 3% in the highest jurisdictions. The combined average is 6.03%.
How does Idaho compare with other states?
Its combined average of 6.03% ranks #37 of the 50 states and D.C. Louisiana is highest at 10.11%; Delaware, Montana, New Hampshire, and Oregon have none.
How do I find my exact local rate?
Check your state revenue department’s rate lookup by address or ZIP; receipts also show the combined rate charged. Enter that local portion above for an exact total.