For a Connecticut private sale, the seller signs the back of the title, gives you a bill of sale (form H-31 or their own version with the same details), and removes their plates. You then register the car in person, by appointment, at a DMV hub or branch, and pay sales tax there: 6.35 percent, or 7.75 percent above $50,000, figured on the higher of your price or the NADA average trade-in value. Cars more than 20 model years old have no Connecticut title at all, so for those the seller hands over their old registration plus the bill of sale instead.
I went through the Connecticut DMV's ownership, registration, sales tax and fee pages on October 16, 2026. Two things stood out. Nothing I read sets a fixed buyer deadline the way Kansas or Arkansas do, but you have no plate to drive on until you register, so the practical clock is your patience. And the DMV's own numbers do not quite agree with each other on fees, which I get into below.
Title or no title depends on the model year
The DMV's proof of ownership page says Connecticut does not require a title for vehicles more than 20 model years old, under statute 14-166. For a non-titled car you need the last owner's registration, plus a Supplemental Assignment of Ownership (Q-1) and/or the H-31 bill of sale. In 2026 that clearly covers a 2005 or older car. A 2006 sits right on the line, because one page says "more than 20" and the registration page says "20+ model years." If a seller of a 2006 has a title, take it and save yourself the argument.
For newer cars, a title is required. If the seller lost it, the DMV lets them sell with a Q-1 and an Application for Replacement Title (H6B), which adds a $25 duplicate fee, and a lien release on lender letterhead if a lien was ever listed. Connecticut also does not take electronic titles. A car from an e-title state needs the paper title in hand, which can take weeks if a lender is holding it.
What the seller has to do
Per the DMV's selling a vehicle page, the seller completes and signs the reverse of the title, hands you a bill of sale with both names and addresses, year, make, model, color, VIN, sale price and date, then removes the plates and cancels the registration. Sellers have a reason to do that fast: until the registration is cancelled, their town keeps assessing property tax on the car.
Registering it: appointment, compliance check, documents
A personal car or SUV can only be registered in person by appointment at a DMV hub or branch, per the registration page. Before booking, run the DMV's compliance check, because unpaid taxes or an overdue emissions test can block you. Bring an acceptable ID for each owner, the completed Application for Registration and Title (H-13B), the signed title or prior registration, a Connecticut insurance ID card for the new car, and the H-31. Walk-ins are not offered at Cheshire, Putnam or Stamford or at any office on Saturdays. Your new title arrives about 30 days after you register.
If you need to get the car tested before it is permanently registered, a temporary registration costs $21 for every 10 days for a passenger car, also by appointment.
Sales tax: the NADA floor
The sales tax on registrations page says private-sale cars and light trucks pay 6.35 percent, or 7.75 percent over $50,000, based on the NADA average trade-in value or the bill of sale, whichever is higher. So a lowball bill of sale gets you nothing. Pay $12,000 for a car whose average trade-in is $13,500 and you owe 6.35 percent of $13,500, about $857.
Real exemptions exist. A sale between immediate family (spouse or civil union partner, parent and child, brother and sister) is tax-free if the car was registered to that relative for at least 60 days and taxed on its last sale. A true gift needs the donor-signed AU-463. Separately, your town will send you a property tax bill, which Connecticut levies whether or not the car is registered. Compare with neighbors in our used car sales tax guide.
Fees, and where the pages disagree
The registration page lists a $190 registration fee for a personal car, a $10 lien fee if financed, a $40 emissions exemption fee if the car is four years old or newer, and a $7.50 greenhouse gas fee with an existing title. The DMV fee chart breaks a regular passenger car down as $120 registration, $5 plate, $25 title, $10 administrative and $15 Clean Air Act, plus Passport to the Parks. Both pages still list that parks fee at $15 with a note it became $24 on July 1, 2025. With $15 the parts add up to exactly $190; with $24 they add up to $199. Budget around $200 and let the counter tell you.
Emissions and VIN verification
The DMV's emissions overview exempts cars younger than four model years and model year 2001 and older; everything in between gets tested, at $20 a test. Emissions-exempt cars arriving from out of state need a VIN verification instead, $10 at an inspection station. Salvage vehicles must go to the Wethersfield inspection lane, where the DMV does a full safety inspection. Our VIN verification guide covers what gets checked, and the Connecticut salvage title rules explain branded cars. Buying from across the border? Our New York private-sale title post covers that seller's side.
Check the history before the meetup
A non-titled 2004 has no title brand to read at all, so a history check carries more weight here. Search the VIN on NMVTIS and run your own report; our private-party CARFAX guide explains why a seller's printout is not enough. CarVins is a licensed CARFAX and AutoCheck reseller and is not affiliated with CARFAX, AutoCheck or Experian. Right now, in mid October 2026, expect about $5.50 per report as a guest, $4.50 as a member, or about $6.75 for the pair, where retail is around $39.99 to $44.99; the checkout page has the final word. See what CARFAX reports include.
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