Hawaii sales tax calculator
Hawaii’s state rate is 4%; the typical combined rate with local taxes is about 4.5%. Add or remove sales tax from any amount below.
Pre-tax
$100.00
Sales tax
$4.50
Total
$104.50
How sales tax works in Hawaii
Hawaii does not have a conventional sales tax but a 4% general excise tax (GET) on business gross income, with a 0.5% county surcharge on Oahu and some other islands. Because the GET applies at every stage and to services and rent, its real bite is broader than the low headline rate suggests, and sellers often pass on 4.712% on Oahu.
Rates are approximate and current as of the 2024–2025 tax years. Local rates change and vary by address; confirm the exact figure with the Hawaii department of revenue or a rate lookup by ZIP code before relying on it.
Sales tax on common amounts in Hawaii (at 4.5%)
Frequently asked questions
What is the sales tax rate in Hawaii?
Hawaii's statewide base rate is 4%. With average local (city and county) taxes added, the typical combined rate is about 4.5%. Your exact rate depends on the address of the sale.
How much is sales tax on $100 in Hawaii?
At the 4.5% average combined rate, sales tax on $100 is about $4.50, for a total of $104.50. At the 4% state rate alone it is $4.00.
Does Hawaii charge local sales tax on top of the state rate?
Yes. Cities, counties or special districts in Hawaii add local sales tax, which is why the average combined rate (4.5%) is higher than the 4% state rate.
How do I calculate sales tax backwards from a total in Hawaii?
Divide the tax-included total by 1 plus the rate as a decimal. At 4.5%, a $104.50 total came from a $100.00 pre-tax price. Use the "Remove tax from a total" mode above.