Rhode Island charges a flat 7% statewide sales and use tax on vehicle purchases — there is no separate motor-vehicle rate and no county or city sales tax anywhere in the state. The tax applies to the price after a trade-in allowance, and dealer documentation fees are generally part of the taxable sale. This tool estimates what you’ll owe at registration.
How it works
The taxable amount is the price minus a trade-in plus any taxable dealer fee, and the flat 7% rate is applied to it:
taxable = max(0, purchase price − trade-in + doc fee)
sales tax = taxable × 7%Because Rhode Island has a single statewide rate, there are no local rates to look up — the only variables are the price, the trade-in credit, and a taxable doc fee. The trade-in credit is real in Rhode Island: only the net difference is taxed.
Example and notes
A 30,000 dollar car with a 10,000 dollar trade-in and a 400 dollar doc fee: the
taxable base is 30,000 − 10,000 + 400 = 20,400, and the tax is 20,400 × 0.07 = 1,428 dollars. This figure is sales/use tax only — add the weight-based
registration fee and the one-time title fee for the full DMV cost. On a
private-party sale the DMV may tax the higher of the price or NADA clean retail
value, so confirm the basis with the Rhode Island DMV.