How Connecticut taxes car purchases
- State vehicle tax rate
- 6.35%
- Trade-in lowers the tax
- Yes
- Tax cap
- None
- Source
- Official source, checked 2026-10-05
These are the rules for a new car bought from a dealer. Used-car and private-sale rules can differ. How we check this data.
Connecticut charges 6.35% at the state level. The rate is 7.75% when the price after trade-in is over $50,000. That rate is higher than 38 states and lower than 12 states. County and city taxes may add to it, so check your local rate and enter the total in the calculator.
What to know in Connecticut
Connecticut has a two-tier tax on vehicles. Most cars pay 6.35%, but when the price after your trade-in is over $50,000, the 7.75% rate applies to the whole amount, not just the part above $50,000.
That makes a trade-in unusually valuable near the threshold. A $52,000 car with no trade-in is taxed $4,030 at 7.75%. Trade in a $5,000 car and the taxable amount drops to $47,000, taxed at 6.35%: $2,984.50, a saving of $1,045.50. The calculator applies the right tier automatically, so try prices on either side of $50,000 to see the jump.
Does Connecticut tax your trade-in?
No. Connecticut only taxes the difference between the new car's price and your trade-in. On a $35,000 car with a $10,000 trade-in, you'd pay $1,587.50 in state tax instead of $2,222.50, a saving of $635.00. That saving is worth counting when you compare a dealer's trade-in offer with selling the car yourself.
Example: a car loan in Connecticut
A $35,000 car with $5,000 down, $1,500 in fees, and a 60-month loan at 6.5% APR ($2,222.50 state tax, rolled into the loan):
- Monthly payment: $659.82
- Amount financed: $33,723
- Total interest: $5,867
- Total cost of the car: $44,589
Change any number in the calculator above to see your own figures.
Rebates and fees
The calculator charges tax on the price before any manufacturer rebate. Ask the dealer how Connecticut treats your specific rebate. Title, registration and dealer documentation fees vary, so ask for an itemized out-the-door price and put the fee total in the calculator.
Other states
States with similar vehicle tax rates:
- Illinois 6.25%
- Massachusetts 6.25%
- Texas 6.25%
- Arkansas 6.5%
- Kansas 6.5%