Hawaii Sales Tax Calculator
Add or remove Hawaii sales tax from a price, using the state rate plus the average local rate.
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About the Hawaii Sales Tax Calculator
This Hawaii sales tax calculator adds sales tax to a price or removes it from a total. It starts with the average combined Hawaii rate of 4.50% (state rate 4.00% plus average local rate). Change the rate to match your city or county.
How to use it
- Enter a price or a total.
- Keep the average combined rate or type your local rate.
- Choose add or remove sales tax and press Calculate sales tax.
Hawaii sales tax rate in 2026
The Hawaii state sales tax rate is 4.00%. Local governments add an average of 0.50%, for an average combined rate of 4.50%. Your exact rate depends on your city and county, so check the Hawaii department of revenue for your address.
Source: Tax Foundation, 2026 state and local sales tax rates (as of July 1, 2026).
Hawaii sales tax examples at 4.50%
| Price | Sales tax | Total |
|---|---|---|
| $10 | $0.45 | $10.45 |
| $25 | $1.12 | $26.12 |
| $50 | $2.25 | $52.25 |
| $100 | $4.50 | $104.50 |
| $250 | $11.25 | $261.25 |
| $500 | $22.50 | $522.50 |
| $1,000 | $45.00 | $1,045.00 |
How to calculate sales tax
Sales tax = price × rate. To remove tax from a total, divide the total by (1 + rate). For example, $108 at 8% includes $8 of tax on a $100 price.
Frequently asked questions
What is the sales tax in Hawaii?
The Hawaii state rate is 4.00%. With average local taxes the combined rate is about 4.50%. Your actual rate depends on your location.
Does Hawaii have local sales tax?
Yes, local governments can add taxes. The average local rate is about 0.50%.
How do I calculate sales tax in Hawaii?
Multiply the price by the sales tax rate, then add it to the price. The calculator above does it for you.
What is $100 with sales tax in Hawaii?
At the average combined rate of 4.50%, $100 costs $104.50.
Where can I find my exact Hawaii rate?
Use the Hawaii department of revenue rate lookup tool for your address.
Last reviewed: November 2026. Rates are averages. Confirm your local rate with the state department of revenue.