State sales tax rate

Base state sales tax rate 6.35%
Total rate range 6.35%

* While the base rate applies statewide, it’s only a starting point for calculating sales tax in Connecticut. For an accurate tax rate for each jurisdiction, add other applicable local rates on top of the base rate.

Download Connecticut sales tax rate table

Get a CSV file of this month’s sales tax rates by ZIP code for Connecticut.

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Connecticut sales tax basics

The Connecticut (CT) state sales tax rate is currently 6.35%.

Connecticut raised the sales and use tax rate to 6.35% in July, 2011. During 2011 legislation, Connecticut passed the enactment of what is commonly called an “Amazon law” requiring e-commerce businesses who have marketing affiliates located within the state to collect and remit sales tax on items shipped to Connecticut residents. is building a fulfillment center in Connecticut. This physical presence, or nexus, ensures a sales tax obligation for Amazon and many sellers participating in Amazon’s Seller Central and Fulfillment By Amazon (FBA) programs.

Retailers in Connecticut are required to collect and remit tax on the sale of goods and services. Goods are taxable unless specifically exempted under state law. Services are only taxable if specifically enumerated under state law


How to register to collect sales tax in Connecticut

All entities engaged in the sale, rental, or lease of goods and/or services, or the operation of a hotel or related lodging house are required to register with the State of Connecticut. Registration is required in order to obtain a Connecticut Sales and Use Tax Permit using one of three ways: Registration is achieved using one of three methods:

1. Online using the Taxpayer Service Center

2. Completing and mailing the paper form Reg-1

3. In person by visiting any of the revenue offices

How to file sales tax returns in Connecticut

Effective January 2014, e-filing is now required for all major business taxes including sales tax.

Deadlines for filing sales tax returns in Connecticut

All tax returns must be electronically filed through the Taxpayer Service Center on or before the last day of the month following the end of the filing period. Other dates are as follows:

Monthly filing due dates are the last day of the month following the end of the filing period.

Quarterly filing due dates are the last day of January, April, July and October.

Annual filing due dates are the last day of January.

Connecticut Sales Tax Rate by County

Are you looking for tax rates within a certain county? We have a list of all the counties in Connecticut along with their sales tax rate.


Connecticut Sales Tax Rates by City

Each city or town in Connecticut may charge additional sales tax. Find the local tax rate for each city.

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