Hawaii Car Sales Tax Calculator
Hawaii's vehicle sales/use tax depends on where you register and other factors, so it isn't a single statewide figure. Use the calculator and the official Hawaii County DMV Offices source below to confirm what applies to your purchase.
Estimate your Hawaii car sales tax
Enter the vehicle price. If Hawaii gives a trade-in tax credit, add your trade-in value to reduce the taxable amount.
State rate only. Many Hawaii counties and cities add a local sales tax on top, so your actual total may be higher. Trade-in credit rules vary — confirm eligibility with the official source below.
How Hawaii taxes a car purchase
| State vehicle sales/use tax rate | Check official source |
| Taxable amount | Price − trade-in credit (where allowed) |
| Local / county tax | Varies by jurisdiction — added on top of the state rate |
Hawaii has no retail sales tax; it levies a General Excise Tax on businesses, and private-party vehicle purchases are generally untaxed. Titling and registration are administered per county — the $10 title and $46 state registration are Honolulu figures, with a $20 county fee and weight taxes added on top.
What this estimate excludes
- Local and district taxes. County, city, and transit taxes are added on top of the Hawaii state rate.
- Title, registration, and plate fees. These are separate from sales tax — use the Hawaii registration and title-transfer calculators for those.
- Dealer documentation fees. A dealer “doc fee” is charged on top and is often itself taxable.
- Exemptions. Gifts, inheritance, and certain family transfers may be exempt — confirm with Hawaii County DMV Offices.
Official Hawaii source
↗Hawaii County DMV Officeswww.honolulu.govRelated Hawaii tools & guides
Frequently asked questions
How much is sales tax on a car in Hawaii?
Hawaii does not reduce to one statewide vehicle tax rate — it varies by locality and purchase type. Check the official Hawaii County DMV Offices source for the rate that applies to you.
Do I pay sales tax when buying a used car from a private seller in Hawaii?
In most states, sales or use tax on a private-party vehicle purchase is collected when you title and register the car, not at the point of sale. The rate is generally the same as a dealer sale. Confirm the private-sale rules with Hawaii County DMV Offices.
Does Hawaii give a sales tax credit for a trade-in?
Most states tax only the difference between the vehicle price and your trade-in value, which lowers the tax you owe. A handful of states tax the full price with no trade-in credit. Verify Hawaii's treatment before you rely on the estimate above.
Are there local or county car sales taxes in Hawaii?
Often, yes. The rate shown here is the Hawaii state rate only; many counties, cities, and transit districts add a local sales tax on vehicle purchases, so your combined rate can be higher. Hawaii County DMV Offices publishes the official combined rates.
Last reviewed: 2026-01-01 · Reviewed by the Car Paperwork editorial team · Based on official Hawaii County DMV Offices sources · Independent resource · Not legal advice