Overview
Private-party sales work differently from dealer sales too: DRS doesn't just take your word for the price. It compares your bill-of-sale figure against the vehicle's NADA average trade-in value and taxes whichever number is higher. Gifts between qualifying parties, and sales among immediate family who've owned the car 60+ days, can skip the tax entirely with the right paperwork. Pick your scenario below.
01 - Official fees
Connecticut car sales tax fees at a glance
| Fee | Amount | Notes |
|---|---|---|
| Standard rate | 6.35% | dealer and private sales |
| Luxury rate | 7.75% | taxable amount (price − trade-in) over $50,000, entire amount |
| Dealer sale base | price − trade-in | |
| Private sale base | max(bill-of-sale price, NADA average trade-in value) | |
| Gift (Form AU-463) | $0 | no consideration allowed from recipient |
| Immediate family sale | $0 | owned 60+ days by transferor, already taxed once |
Figures verified June 2026 against official sources (listed below). Always confirm the final amount with the Connecticut DMV (plus your town tax collector for the annual property tax) - counties can add small local fees.
03 - Same state, other costs
More Connecticut vehicle costs
04 - Common questions
Connecticut car sales tax FAQ
Is Connecticut's 7.75% luxury tax based on the sticker price or what I actually pay?
It's based on your taxable amount - purchase price minus any trade-in allowance. A $54,000 car with a $6,000 trade-in has a $48,000 taxable amount, which stays under the $50,000 threshold and is taxed at 6.35%, not 7.75%.
Why did the DMV tax me on more than what I actually paid for a used car?
Connecticut taxes private-party sales on whichever is higher: your bill-of-sale price or the vehicle's NADA average trade-in value. If you got a $9,000 car for $6,000, expect tax on $9,000 unless you can document why the car was worth less (accident history, needed repairs, etc.).
How do I gift a car tax-free in Connecticut?
File Form AU-463 (Motor Vehicle and Vessel Gift Declaration), signed by the person giving the vehicle, confirming no cash, property, service, or debt assumption changed hands. Submit it with your registration paperwork and DRS waives the sales tax entirely.
Who counts as 'immediate family' for the no-tax transfer?
Only mother, father, spouse (including civil union), daughter, son, sister, or brother. The vehicle must have been registered in that family member's name for at least 60 days before the transfer, and tax must already have been paid on its last sale - this exemption is narrower than the gift exemption and doesn't cover in-laws, grandparents, or cousins.
Do service contracts and extended warranties get the luxury rate too?
No - CT DMV guidance treats warranties and service contracts as always taxed at the standard 6.35%, even on a vehicle whose price triggers the 7.75% rate. Keep the warranty priced as a separate line item on your paperwork to get this treatment.
What if I underreport the price to save on tax?
It doesn't work for private sales - DRS uses NADA's average trade-in value as a floor specifically to prevent buyer-seller collusion on the bill of sale. Underreporting is also a legal risk in its own right, independent of whether it lowers your bill.
05 - Receipts
Official sources
Every number on this page comes from these documents - check them yourself.