Does Hawaii charge sales tax on cars?

Hawaii has no conventional sales tax. Instead it levies a General Excise Tax (GET) on the seller's gross income, which dealers pass on to buyers. For most counties the GET is 4%, but Oahu (Honolulu County) adds a 0.5% surcharge for a combined 4.5% rate on vehicle purchases.

What is the GET rate on a car in Hawaii?

The General Excise Tax is 4% in Hawaii County, Maui County, and Kauai County. On Oahu (Honolulu County) a county surcharge raises it to 4.5%. The dealer typically itemizes this as the tax line on your purchase agreement, calculated on the full vehicle price.

Can I deduct my trade-in from the taxable price in Hawaii?

Generally no. Because Hawaii taxes the dealer's gross income through the GET rather than a sales tax on the net price, a trade-in does not usually reduce the taxable amount the way it does in true sales-tax states. The GET applies to the full selling price.

Do I pay GET when buying from a private party?

Private-party vehicle sales are generally not subject to GET because the seller is not engaged in business. The buyer still pays registration and weight-tax fees at the county office, but no General Excise Tax is collected on a casual private sale between individuals.

Are dealer documentation fees taxed too?

Often yes. Dealer documentation and handling fees that are part of the dealer's gross income can be subject to GET. This calculator lets you add such fees to the taxable base. Confirm exactly which fees are taxed on your specific purchase agreement.

Hawaii Car Sales Tax Calculator

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Hawaii does not have a traditional sales tax — it has the General Excise Tax (GET), which dealers pass on to car buyers. This calculator applies the correct 4 percent or 4.5 percent GET rate to your vehicle price and any taxable fees, then shows your total out-the-door cost.

How it works

GET is charged on the dealer’s gross income, so it applies to the full vehicle price (trade-ins generally do not reduce it):

taxable base = vehicle price + taxable dealer fees
GET          = taxable base × rate
total        = vehicle price + dealer fees + GET

The rate is 4 percent in Hawaii, Maui, and Kauai counties, and 4.5 percent on Oahu because Honolulu County adds a 0.5 percent surcharge. Unlike a net sales tax, a trade-in usually does not lower the taxable amount.

Example

A 30,000 dollar car purchased on Oahu with 500 dollars of taxable dealer fees has a taxable base of 30,500 dollars. At the 4.5 percent Oahu rate the GET is about 1,372.50 dollars, for a total of roughly 31,872.50 dollars before registration.

Notes

Private-party sales between individuals are generally not subject to GET, only to registration and weight-tax fees. Exactly which dealer fees are taxable can vary, so check your purchase agreement. This tool estimates GET only and excludes registration, plate, and title fees charged at the county office.