How to register for a sales tax permit in Connecticut

by TaxJar December 4, 2023

Please note: This blog was originally published in 2015. It’s since been updated for accuracy and comprehensiveness.

This post will walk you through registering for a sales tax permit in Connecticut. For more information about sales tax in Connecticut, check out our Connecticut Sales Tax Guide for Businesses page.

1. Who needs a sales tax permit in Connecticut?

Anyone engaged in business in Connecticut, which includes selling tangible personal property for storage, use or other consumption in this state, or selling taxable services, must register with the Connecticut Department of Revenue Services for a Sales and Use Tax Permit.

Businesses with multiple locations must apply for a Connecticut sales tax permit in each location.

Failure to obtain a tax permit will result in a fine of not more than $500 or imprisonment of not more than three months, or both, for each offense.

2. How do you register for a sales tax permit in Connecticut?

You have several options to register for your Connecticut sales tax permit:

1.) Register online at the MyConnectCT

2.) Fill out form REG-1 and remit it, along with a check for Connecticut’s sales tax permit application fee of $100, to:

Department of Revenue Services State of Connecticut
PO Box 2937
Hartford CT 06104-2937

You can also visit a Connecticut Department of Revenue field office to apply.

3. What information do you need to register for a sales tax permit in Connecticut?

Business identification information
Major business activity
Business entity type
All business owners and officers

4. How much does it cost to apply for a sales tax permit in Connecticut?

Connecticut requires a $100 fee to apply for a sales tax permit.

5. How long does it take to receive your Connecticut sales tax permit?

If you register online, a temporary Connecticut sales tax permit will be available immediately. You can use this until your permanent sales tax permit is available within 15 days. You’ll also receive a permit immediately if you walk-in to a Connecticut DRS field office.

Paper applications will be processed within 2-3 weeks.

6. Do you have to renew your Connecticut sales tax permit?

Connecticut sales tax permits are valid for 2 years after the date of issuance. Beyond that, they must be renewed. (The renewal period was formerly 5 years, but this will change January 1, 2018.)

7. How can I learn more about Connecticut sales tax?