Idaho Sales Tax Calculator
The average combined sales tax rate in Idaho is 6.03% in 2026 — a 6% state rate plus about 0.03% in local taxes. On a $100 purchase that's $6.03 in tax for a $106.03 total. Enter any amount below to add or remove Idaho sales tax instantly.
$100.00 total
Before tax: $100.00 · Sales tax: $0.00 (0%)
State & average combined rates: Tax Foundation 2026. Local rates vary by city/county — adjust the rate for an exact figure. How we calculate →
Idaho sales tax rate in 2026
Idaho's statewide base sales tax rate is 6%. On top of that, counties, cities and special districts add local taxes that average about 0.03%, for an average combined rate of 6.03%. These figures come from the Tax Foundation's 2026 state and local sales-tax data.
Because local rates differ from city to city, the auto-filled 6.03% is the population-weighted state average. For an exact figure at a specific address, adjust the rate in the calculator to your local combined rate.
How much is sales tax on a purchase in Idaho?
At Idaho's average combined rate of 6.03%, here's the tax and total on common amounts:
$10 → $0.60 tax, $10.60 total · $50 → $3.02 tax, $53.02 total · $100 → $6.03 tax, $106.03 total · $1,000 → $60.30 tax, $1060.30 total.
Enter your own amount in the calculator above for an exact figure, or switch to reverse mode to find the pre-tax price from a total.
How Idaho sales tax is calculated
Sales tax is the price multiplied by the rate as a decimal. Using Idaho's 6.03% combined rate, a $100 item is 100 × 0.0603 = $6.03 in tax, for a $106.03 total. To work backwards from a total that already includes tax, divide by one plus the rate — the calculator's Remove tax mode does this in one step.
Idaho sales tax — frequently asked questions
What is the sales tax in Idaho?
Idaho's statewide sales tax rate is 6% in 2026. With local taxes, the average combined rate is 6.03%.
How much is sales tax on $100 in Idaho?
At Idaho's average combined rate of 6.03%, sales tax on a $100 purchase is $6.03, for a total of $106.03. Enter any amount in the calculator above for an exact figure.
How do I calculate Idaho sales tax?
Multiply the price by 6.03% as a decimal (0.0603). For example, $50 × 0.0603 = $3.02 tax, for a $53.02 total. The calculator above fills in the rate and does it instantly.
Does Idaho have local sales taxes?
Yes. On top of the 6% state rate, Idaho localities add an average of about 0.03%, which is why the combined rate averages 6.03% and varies by city and county.
How do I remove sales tax from a total in Idaho?
Divide the total by one plus the rate. On a $106.03 total at 6.03%, the pre-tax price is $100.00 and the tax was $6.03. Use the “Remove tax” mode above to do this automatically.
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