Stonington car tax
A car worth $25,000 in Stonington, CT pays about $336 a year in personal property tax (19.2 mills).
Stonington car tax calculator
- Assessed value: $25,000 × 70% = $17,500
- Tax: $17,500 × 19.2 mills = $336
Towns value cars from pricing guides (NADA clean retail, assessed at 70%), not what you paid. Your bill may be prorated for months you owned the car.
Car tax in Stonington by car value
| Car value | Yearly tax | Per month |
|---|---|---|
| $10,000 | $134 | $11 |
| $15,000 | $202 | $17 |
| $20,000 | $269 | $22 |
| $25,000 | $336 | $28 |
| $30,000 | $403 | $34 |
| $40,000 | $538 | $45 |
| $50,000 | $672 | $56 |
| $75,000 | $1,008 | $84 |
Buying a car in Connecticut: one-time tax
Connecticut sales and use tax on motor vehicles — 6.35% (7.75% at $50,000+). Your trade-in is subtracted before tax.
Cars over $50,000 pay 7.75% on the full price, not just the part above $50,000.
Cut what your car costs in Stonington
Car tax is set by your town, but your loan and insurance aren't. Refinancing a car loan at a lower rate often saves more each year than the tax itself.
Elsewhere in New London County
- Bozrah$420/yr
- Colchester$524/yr
- East Lyme$507/yr
- Franklin$372/yr
- Griswold$488/yr
- Groton$443/yr
- Lebanon$394/yr
- Ledyard$453/yr
- Lisbon$485/yr
- Lyme$254/yr
- Montville$550/yr
- New London$474/yr
- North Stonington$306/yr
- Norwich$563/yr
- Old Lyme$295/yr
- Preston$447/yr
- Salem$529/yr
- Sprague$537/yr
- Voluntown$364/yr
- Waterford$429/yr
Yearly tax on a $25,000 car.
Questions
What is the car tax rate in Stonington, CT?
19.2 mills for FY2026-27.
How is car tax calculated in Stonington?
Assessed value: $25,000 × 70% = $17,500 → Tax: $17,500 × 19.2 mills = $336
How much is car tax on a $30,000 car in Stonington?
About $403 a year.
When is car tax due in Stonington?
The Grand List date is October 1. The regular bill is due July 1 and payable without interest through August 1. Cars registered after October 1 get a supplemental bill due January 1, payable by February 1. Late payments accrue 1.5% interest a month.
How is the Connecticut car tax calculated?
Assessment = 70% of the car's clean retail value on October 1. Tax = assessment × your town's motor vehicle mill rate ÷ 1,000. The rate cannot exceed 32.46 mills.
What is the motor vehicle mill rate cap?
32.46 mills under CGS §12-71e, which has applied since the 2021 Grand List (bills paid in FY2022-23). It still applies in FY2026-27. A town may set a lower rate, including zero.
Sources
- CT OPM – Mill Rates for FY 2014-2027 (CT Open Data, Office of Policy and Management)
- CT OPM – Mill Rates (motor vehicle cap 32.46 mills)
- CGS §12-71e Motor vehicle mill rate (Chapter 203)
- CT DRS – Sales tax on motor vehicles
Last checked October 14, 2026. Rates are for passenger cars owned by individuals; leased, business and specialty vehicles can differ. Confirm with your tax collector or commissioner of the revenue.