Connecticut Sales Tax Guide for E-Commerce Retailers

Fast Facts about Connecticut Sales Tax:

Connecticut state sales tax rate 6.35%
Does Connecticut have local sales tax rates? No
Connecticut taxing authority Department of Revenue
Connecticut sales tax questions phone number 860-297-5962

Am I required to collect sales tax in Connecticut?

Businesses that have an employee, location (including inventory in a warehouse), or who do other business in the state are required to register for a sales tax permit and collect sales tax from buyers in Connecticut. 

E-commerce businesses with economic nexus in Connecticut are also required to register and collect.

You have economic nexus in Connecticut if you made more than $100,000 in sales and more than 200 transactions to buyers in Connecticut in the 12-month period ending September 30th.

How to Register for a Connecticut Sales Tax Permit

Register for a Connecticut sales tax permit online at the Connecticut Department of Revenue.

Need help? Contact us for help with your Connecticut sales tax registration.

How to Collect Connecticut Sales Tax

Connecticut only has a single sales tax rate for the whole state, so charge all buyers the state’s 6.35% sales tax rate. (Rate current as of 2024.)

Learn more about origin and destination-based sales tax sourcing here.

And learn more about how to collect the right amount of state plus local sales tax here.

Is shipping taxable in Connecticut?

Yes, the amount you charge your customer for shipping is subject to Connecticut sales tax. But, in general, if the item isn’t taxable, then the shipping is also not taxable, even in states where shipping is otherwise taxable.

Learn more about sales tax on shipping charges here.

Connecticut Sales Tax Due Dates

Connecticut sales tax is due the last day of the month following the end of the reporting period.

For example, if you are required to file and remit Connecticut sales tax monthly, the sales tax due date for the month ending September 30 would be October 31.

How to File Sales Tax in Connecticut

When your Connecticut sales tax due date rolls around, you can either file yourself online or let a partner like HOST take this onerous task off your plate.

Learn more about handing off your sales tax filings to HOST here!

More about Connecticut Sales Tax

Learn more about Connecticut sales tax at the Connecticut Department of Revenue.