Hawaii Reverse Sales Tax Calculator
Hawaii doesn't have a traditional sales tax — it has a General Excise Tax (GET), which is technically charged to businesses rather than consumers. In practice, the distinction rarely matters: businesses pass the GET through to buyers on receipts, and it works exactly like a sales tax. The base rate is 4%, and Honolulu County (Oahu) adds a 0.5% surcharge for a combined 4.5%.
At 4–4.5%, Hawaii has one of the lowest nominal rates in the country, but unlike most states, the GET applies to almost everything — groceries, prescription drugs, services, even rent in some cases. There are very few exemptions. The calculator defaults to 4.44% (the statewide average); use 4.5% for any purchase on Oahu.
Current Hawaii Sales Tax Rates
| Component | Rate |
|---|---|
| State rate | 4.00% |
| Average local rate | 0.44% |
| Average combined rate | 4.44% |
| Location | Combined Rate |
|---|---|
| Honolulu | 4.50% |
| Maui | 4.50% |
| Kailua-Kona | 4.50% |
| Hilo | 4.50% |
What's Taxable in Hawaii
Hawaii's general excise tax (GET) applies to almost everything — including groceries, prescription drugs, and most services. Unlike a sales tax, it's technically a tax on the business, but it's almost always passed through to consumers as if it were a sales tax. Nothing is exempt the way most states exempt food and medicine.
Worked Example
Purchase in Honolulu totaling $89.50 at 4.50%.
$89.50 ÷ 1.0450 = $85.65 (pre-tax price)
$89.50 − $85.65 = $3.85 (tax amount)
That's $3.85 in sales tax on a $85.65 purchase before tax. The main calculator handles this automatically — enter the total and rate and the breakdown appears instantly.
Frequently Asked Questions
Not exactly. Hawaii levies a General Excise Tax (GET) rather than a traditional sales tax. The GET is technically imposed on businesses rather than consumers, but businesses almost universally pass it through on receipts. The result looks and functions like a sales tax. The base GET rate is 4%, and Honolulu County adds a 0.5% surcharge, bringing the effective rate to 4.5% in Oahu.
Yes. Hawaii's General Excise Tax applies to groceries, prescription drugs, and most goods and services — there are very few exemptions. This makes Hawaii unusual: in most states, food and medicine are exempt from sales tax. In Hawaii, essentially everything is subject to the GET.
Divide the total amount paid by (1 + the tax rate as a decimal). For Hawaii's 4.44% rate: divide by 1.0444. The result is the pre-tax price. Subtract that from the total to get the tax amount. The calculator on this page does this automatically.
Hawaii does not have sales tax holidays.