Connecticut · Sales tax registration
Connecticut sales tax permit, done for you.
Connecticut registers through myconneCT, and there is one thing worth deciding at the outset rather than at the end. A third party cannot close a client's account in myconneCT. Whoever holds that login is the person who will have to act when the business winds down.
Last updated:
Who you are dealing with
Connecticut Department of Revenue Services
- Handles:
- Sales and use tax permit
- System:
- myconneCT
- Form:
- Register the business through myconneCT. Returns are filed on Form OS-114
Connecticut Department of Revenue Services, sales tax registration
State fee. Connecticut charges for a sales and use tax permit. We confirm the current amount with Revenue Services before filing and pass it through at cost.
Our fee. $180 per state, flat. State fees are passed through at cost.
When you have to register
The permit has to be in hand before you make taxable sales. Connecticut also expects promptness at the other end: an employer going out of business is told to notify Revenue Services immediately.
What comes next
Worth planning for now: closing means marking the final OS-114 as final with the last business date, closing the account in myconneCT under Taxpayer's Updates, and posting the physical permit back to DRS at 450 Columbus Blvd, Suite 1, Hartford CT 06103.
How long it takes
Connecticut does not publish a turnaround we could confirm. myconneCT leaves an immediate record, which matters here more than usual because of who is allowed to act on the account later.
What we do
We work out which accounts you need, submit each registration, and hand you the account numbers, rates, and deposit schedules your payroll system asks for. One flat price per state, and any state fee passed through at cost. You keep the client. We never email them.
What makes Connecticut harder than average
- Your accountant cannot close the account for you. A third party cannot close a client's account in myconneCT. That single rule breaks the normal delegation model and it is why Connecticut accounts sit open at firms that closed every other state without trouble. Decide who holds the login now.
- The physical permit goes back at the end. Connecticut wants it returned to DRS in Hartford with the last day of business, and the successor's name if sold, written on the back. New York explicitly says the opposite. Do not carry one state's habit into the other.
- Immediately is Connecticut's word, not a paraphrase. Its guidance for a business going out is to notify Revenue Services immediately. That tone applies at both ends of the relationship.
- There is a fee. Most states issue a sales permit free, Connecticut does not, so budget for the pass-through.
How Connecticut compares
If Connecticut is one of several states on the list, the order you register in changes what each one asks for.
Questions and answers
Can my accountant manage the account for me?
For most things yes, but not for closing it. A third party cannot close a client's account in myconneCT, so whoever holds the login has to be available at the end. Worth deciding at registration.
Is there a fee?
Yes. Connecticut charges for a sales and use tax permit. We confirm the current amount before filing and pass it through at cost.
What do I file after registering?
Form OS-114, the Connecticut sales and use tax return.
Do I really have to post the permit back when I close?
Yes. Connecticut asks for the permit to be returned to DRS at 450 Columbus Blvd, Suite 1, Hartford CT 06103, with the last day of business on it. New York, by contrast, tells you to destroy your certificate.
What do you need from me to start?
The legal name and FEIN, entity type, Connecticut locations, what you sell, the date taxable sales begin, and who will hold the myconneCT credentials.
Also in Connecticut
Agency details verified 2026-08-03
About the provider
Regcrest LLC is a document preparation and filing service based in Allentown, Pennsylvania, founded in 2026. It prepares and files state payroll and sales tax registrations, account closures, and resale certificates on behalf of the businesses that instruct it, and works behind accounting firms, bookkeepers, and payroll providers as well as directly with businesses.
Regcrest LLC is not a CPA firm and not a law firm. It gives no tax or legal advice. It files in all 50 states, and publishes a full page for the 29states it has verified against the agency's own material so far, each one showing the date it was checked. For anything that turns on your specific situation, ask a licensed accountant or attorney.