Hawaii Sales Tax Calculator
The average combined sales tax rate in Hawaii is 4.5% in 2026 — a 4% state rate plus about 0.5% in local taxes. On a $100 purchase that's $4.50 in tax for a $104.50 total. Enter any amount below to add or remove Hawaii 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 →
Hawaii sales tax rate in 2026
Hawaii's statewide base sales tax rate is 4%. On top of that, counties, cities and special districts add local taxes that average about 0.5%, for an average combined rate of 4.5%. 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 4.5% 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 Hawaii?
At Hawaii's average combined rate of 4.5%, here's the tax and total on common amounts:
$10 → $0.45 tax, $10.45 total · $50 → $2.25 tax, $52.25 total · $100 → $4.50 tax, $104.50 total · $1,000 → $45.00 tax, $1045.00 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 Hawaii sales tax is calculated
Sales tax is the price multiplied by the rate as a decimal. Using Hawaii's 4.5% combined rate, a $100 item is 100 × 0.0450 = $4.50 in tax, for a $104.50 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.
Hawaii sales tax — frequently asked questions
What is the sales tax in Hawaii?
Hawaii's statewide sales tax rate is 4% in 2026. With local taxes, the average combined rate is 4.5%.
How much is sales tax on $100 in Hawaii?
At Hawaii's average combined rate of 4.5%, sales tax on a $100 purchase is $4.50, for a total of $104.50. Enter any amount in the calculator above for an exact figure.
How do I calculate Hawaii sales tax?
Multiply the price by 4.5% as a decimal (0.0450). For example, $50 × 0.0450 = $2.25 tax, for a $52.25 total. The calculator above fills in the rate and does it instantly.
Does Hawaii have local sales taxes?
Yes. On top of the 4% state rate, Hawaii localities add an average of about 0.5%, which is why the combined rate averages 4.5% and varies by city and county.
How do I remove sales tax from a total in Hawaii?
Divide the total by one plus the rate. On a $104.50 total at 4.5%, the pre-tax price is $100.00 and the tax was $4.50. Use the “Remove tax” mode above to do this automatically.
Sales tax calculators by state
National sales tax calculator · then pick any state:
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →