States · Connecticut

Connecticut Vehicle Registration Cost

Connecticut's vehicle costs are dominated by the annual motor vehicle property tax — billed by your town (Connecticut has 169 towns, no counties), it can range from ~1.4% to 5.3% of depreciated MSRP annually depending on your municipality's mill rate. The state portion is uniform: 70% assessment ratio × statewide depreciation schedule × MSRP. Sales tax is 6.35% on vehicles under $50,000 and jumps to 7.75% on the FULL amount for vehicles $50,000+ (a "luxury tax" cliff that surprises buyers). Registration is biennial $40/year annualized plus various state surcharges (Clean Air, Greenhouse Gas, Parks Pass) totaling about $27/year. Notably, Connecticut has NO EV registration surcharge. A new $35,000 vehicle in a typical CT town runs about $3,140 in first-year costs, with annual renewals around $880 in year 1 dropping to roughly $440 by year 5 in a typical mill-rate town.

How Connecticut calculates registration

• Triennial Registration Fee (annualized) — $40 (annual) Connecticut registers passenger vehicles for 3-year periods at $120 total. Shown here as $40/year for comparability; you actually pay $120 every 3 years to CT DMV.
• State DMV Fees (Clean Air + Greenhouse Gas + Parks Pass + Admin) — $25 (annual) Combined annualized state surcharges: Clean Air Act fee ($15), Greenhouse Gas fee ($15), Passport to the Parks ($24, raised in 2025), Plate fee ($7), Admin fee ($10) — totals about $80 in mandatory fees over a 3-year registration cycle (≈$27/year).
• Annual Motor Vehicle Property Tax (mill rate × 70% × MSRP) — 2.45% of depreciated value (annual) Per CT General Statutes §12-71b. Formula: MSRP × statewide depreciation percentage × 70% assessment ratio × your municipal mill rate. The depreciation table is set by the state Office of Policy and Management (uniform statewide). Mill rates vary dramatically by town: low ~20 mills (Greenwich), median ~35 mills (most suburbs), high ~75+ mills (Hartford, Bridgeport). Our calculation uses ~35 mills as a state average; rates in lower-mill towns may be roughly half this, high-mill towns nearly double.
• Title Fee — $25 (one-time) One-time fee for new title. Add $10 if a lienholder is recorded.

Sales tax

Connecticut charges 6.35% state sales tax . Trade-in credit: full. Tax basis: purchase price.

Connecticut charges 6.35% state sales tax on vehicles with NO local additions — same statewide. BUT: vehicles with a taxable price OVER $50,000 are taxed at the 7.75% "luxury rate" applied to the FULL amount (not just the excess over $50K). So a $49,999 vehicle pays 6.35% = $3,175; a $50,001 vehicle pays 7.75% = $3,875 — a $700 cliff. Trade-in is fully credited against the taxable amount before this calculation.

Electric vehicles

Connecticut does NOT impose an EV registration surcharge as of 2026 — making it one of only ~10 states without one. Combined with the recent Tesla/Rivian etc. property tax assessment changes (using purchase price rather than MSRP for some newer EV models), CT is moderately friendly for EV ownership though the property tax can still be substantial in high-mill towns.

What makes Connecticut distinctive

• Connecticut's annual motor vehicle property tax is billed by your TOWN (not county — CT has 169 towns and no counties). Mill rates vary dramatically: Greenwich ~12 mills (effective ~0.84% on depreciated MSRP), New Haven ~43 mills (~3.0%), Hartford ~74 mills (~5.2%), Bridgeport ~43 mills. Two adjacent towns can have wildly different vehicle taxes — making town choice meaningful for car owners.
• Connecticut's 7.75% "luxury" sales tax rate applies to the FULL taxable amount when the vehicle price exceeds $50,000 — NOT just the portion over $50K. So a $49,999 vehicle pays $3,175 in sales tax while a $50,001 vehicle pays $3,875 — a $700 jump from a $2 price increase. Buyers near the threshold should consider this cliff carefully.
• Connecticut is one of about 10 US states with NO EV registration surcharge as of 2026. The state has historically focused on EV incentives rather than surcharges, though state EV rebates (CHEAPR program) have been reduced from earlier highs. Combined with the lack of surcharge, CT is neutral-to-friendly for EV ownership compared to neighbors like MA, NY, RI.
• Connecticut requires you to pay your town property tax BEFORE the DMV will renew your registration — same pattern as VA, NC, SC, MO. Your town tax collector sends the bill in July (covering October-September period). If you sell a vehicle mid-year, you may be entitled to a prorated refund of the property tax paid.
• Connecticut uses MSRP (not purchase price) as the basis for annual vehicle property tax, with a state-mandated uniform depreciation schedule (set by the Office of Policy and Management). A used vehicle's tax is based on its ORIGINAL MSRP times the age depreciation, not what you paid. This is similar to Massachusetts and Colorado but unusual among ad valorem states.