How New Jersey taxes a car deal
- State tax rate
- 6.625%
- Local add-ons
- None typical
- Trade-in credit
- Yes — taxed on the difference
- Doc fee
- Uncapped
New Jersey runs a flat 6.625% statewide on vehicles — no county or municipal add-ons to look up, which makes it one of the more predictable states to price a deal in. Your trade-in reduces the taxable amount in full, so a $32,000 purchase with an $8,000 trade is taxed on $24,000: about $530 saved before the trade equity itself counts for anything.
Two Jersey-specific lines to watch. First, vehicles priced above $45,000 (and certain low-MPG vehicles) can trigger an additional 0.4% supplemental fee on top of sales tax — small in percentage, but on a $60,000 truck that's another $240 the window sticker never mentioned. Second, and bigger: New Jersey doesn't cap dealer documentation fees, and $600–999 doc fees are routine here — among the steepest in the country. That fee is negotiable no matter how preprinted it looks.
One item to keep an eye on rather than act on: New Jersey's trade-in credit has been the subject of legislative proposals to limit or eliminate it. Nothing has changed as of mid-2026 — the full credit applies — but if you're reading this much later, it's the one Jersey rule worth re-verifying before you count on it.
Every figure above was last verified against official New Jersey sources in August 2026. Tax rules do change — the final word is always your paperwork and the DMV.