Connecticut Car Sales Tax Calculator
Connecticut charges a state vehicle sales/use tax of 6.35% on a car purchase. On a $20,000 vehicle that is about $1,270.00 in state tax before any local add-ons. Enter your own price below — and your trade-in, if Connecticut allows a trade-in credit — to estimate what you'll owe.
Quick answer: Connecticut’s state vehicle sales/use tax rate is 6.35%. Local (county/city) taxes may apply on top.
Estimate your Connecticut car sales tax
Enter the vehicle price. If Connecticut gives a trade-in tax credit, add your trade-in value to reduce the taxable amount.
State rate only. Many Connecticut counties and cities add a local sales tax on top, so your actual total may be higher. Trade-in credit rules vary — confirm eligibility with the official source below.
How Connecticut taxes a car purchase
| State vehicle sales/use tax rate | 6.35% |
| Taxable amount | Price − trade-in credit (where allowed) |
| Local / county tax | Varies by jurisdiction — added on top of the state rate |
Connecticut title fee is $25, passenger registration is a $120 base fee, and the plate fee is $5. State sales/use tax is 6.35% on vehicles under $50,000 and 7.75% on vehicles $50,000 and over. Cities and towns separately bill an annual local motor vehicle property tax based on the vehicle's assessed value and the local mill rate.
Sales tax on a used car in Connecticut
Connecticut applies the same 6.35% state sales/use tax to a used car as to a new one. On a private-party sale the tax is normally collected when you title and register the vehicle — calculated on the price you paid, minus a trade-in credit where the state allows one, and checked against the vehicle's fair-market value to deter under-reporting.
Dealer vs. private-party purchases in Connecticut
Connecticut dealers collect the 6.35% or 7.75% sales tax at delivery and process the H-13B and title paperwork through the DMV's dealer system. Private-party buyers must visit a DMV branch with the signed title, application, proof of insurance, and ID within 60 days; the DMV collects sales/use tax at the same visit using the higher of declared price or NADA clean-trade value.
Source ↗What's different about Connecticut vehicle tax
Connecticut uses a tiered vehicle sales/use tax: 6.35% on vehicles priced under $50,000 and 7.75% on vehicles priced $50,000 or more (the higher rate is sometimes called the "luxury rate"). Both dealer and private-party purchases pay the same rate, calculated by the DMV at title transfer on the actual sale price or NADA clean-trade value, whichever is higher. Family transfers between immediate family members may qualify for an exemption.
Source ↗County & local taxes in Connecticut
Connecticut has no county-level sales tax — the state rate is uniform statewide. The local cost variance comes from the annual motor vehicle property tax billed by each of the 169 cities and towns. Mill rates and assessment ratios vary widely: Hartford, Bridgeport, and Waterbury historically run higher than wealthy suburban towns. The Office of Policy and Management publishes the motor-vehicle mill rate cap each year (currently capped at 32.46 mills as of recent legislation).
Source ↗Worked example: buying a car in Connecticut
Olivia buys a used 2021 Honda Civic from a private seller in Hartford, Connecticut for $19,000.
| Vehicle price | $19,000.00 |
| State sales/use tax | $1,206.50 |
| Title fee | $25.00 |
| Standard biennial passenger registration line items (approximate) | $120.00 |
| Estimated total | $20,351.50 |
Because Olivia's purchase price is under $50,000, she pays the 6.35% rate ($1,206.50) on the $19,000 sale at the Connecticut DMV. She also pays the $25 title fee and approximately $120 in biennial registration line items (confirm exact total on the DMV fee page). A few months later, the City of Hartford will mail her an annual motor vehicle property tax bill based on the car's assessed value and Hartford's motor-vehicle mill rate. Her vehicle will eventually need a CT VIP emissions test on the biennial cycle.
What this estimate excludes
- Local and district taxes. County, city, and transit taxes are added on top of the Connecticut state rate.
- Title, registration, and plate fees. These are separate from sales tax — use the Connecticut registration and title-transfer calculators for those.
- Dealer documentation fees. A dealer “doc fee” is charged on top and is often itself taxable.
- Exemptions. Gifts, inheritance, and certain family transfers may be exempt — confirm with Connecticut Department of Motor Vehicles.
Official Connecticut sources
Related Connecticut tools & guides
Frequently asked questions
How much is sales tax on a car in Connecticut?
The Connecticut state vehicle sales/use tax rate is 6.35%. Multiply it by the taxable purchase price (usually the price minus any trade-in credit). Counties and cities may add a local sales tax on top, so confirm your combined rate with Connecticut Department of Motor Vehicles.
Do I pay sales tax when buying a used car from a private seller in Connecticut?
In most states, sales or use tax on a private-party vehicle purchase is collected when you title and register the car, not at the point of sale. The rate is generally the same as a dealer sale. Confirm the private-sale rules with Connecticut Department of Motor Vehicles.
Does Connecticut give a sales tax credit for a trade-in?
Most states tax only the difference between the vehicle price and your trade-in value, which lowers the tax you owe. A handful of states tax the full price with no trade-in credit. Verify Connecticut's treatment before you rely on the estimate above.
Are there local or county car sales taxes in Connecticut?
Often, yes. The rate shown here is the Connecticut state rate only; many counties, cities, and transit districts add a local sales tax on vehicle purchases, so your combined rate can be higher. Connecticut Department of Motor Vehicles publishes the official combined rates.
Can you legally avoid sales tax on a used car in Connecticut?
The legitimate ways to lower or avoid vehicle sales/use tax in Connecticut are a qualifying trade-in credit (where the state allows one), a genuine gift or qualifying family transfer, or a specific exemption the state grants — not understating the sale price, which is illegal and easily caught by Connecticut Department of Motor Vehicles against the vehicle's fair-market value. Confirm any exemption with Connecticut Department of Motor Vehicles before relying on it.
Why is Connecticut sales tax higher on more expensive cars?
Connecticut applies a tiered sales/use tax to vehicles: 6.35% on vehicles priced under $50,000 and 7.75% on vehicles priced $50,000 or more. The higher tier is sometimes called the "luxury rate." The break is based on the actual purchase price (or NADA clean-trade value, whichever is higher), so a $49,000 car is taxed at 6.35% and a $50,000 car is taxed at 7.75% on the full price.
What is the Connecticut local motor vehicle property tax?
Every Connecticut city and town levies an annual property tax on motor vehicles registered to addresses in that town. The tax is calculated as the vehicle's assessed value (typically 70% of NADA average) times the town's motor-vehicle mill rate. The mill rate is currently capped by the state at 32.46 mills for the motor-vehicle category, but towns set their own rate up to that cap. A new car in a high-rate town can owe several hundred dollars per year.
Do I need an emissions test to title a car in Connecticut?
Most gas-powered vehicles in Connecticut need a CT VIP emissions test on a biennial cycle for ongoing registration. New vehicles getting their first Connecticut registration and vehicles less than four model years old are typically exempt their first cycle. The emissions check is separate from the title transfer itself but is required before the registration sticker can be issued in many cases.
Last reviewed: 2026-01-01 · Reviewed by the Car Paperwork editorial team · Based on official Connecticut Department of Motor Vehicles sources · Independent resource · Not legal advice