Connecticut Sales Tax License Registration

Oct 1, 2025

If your business has recently started operating in Connecticut, you may need to register for sales tax with the state's Department of Revenue Services. Sales tax registration is required for businesses that sell tangible personal property or taxable services in Connecticut.

How to get a Connecticut Sales Tax License

There is one sales tax setup task you may need to complete in Connecticut to get your sales tax licence. You can follow the guide below to help you get registered directly with the Connecticut agencies or use Mosey to do it.

Use Mosey to register for sales tax in Connecticut.

Connecticut Sales Tax Setup for LLC, LLP, Corporation

Every retailer engaged in business in Connecticut and making non-exempt sales of services or of tangible personal property for storage, acceptance, consumption, or any other use in Connecticut, must collect tax from the purchaser. The statewide Connecticut sales tax rate is 6.35%. There are specialty tax rates imposed on certain goods and services, including the sale of computer and data processing services, which is taxed at 1%. Out-of-state entities with at least 200 transactions or $100,000 in Connecticut sales during the most recent 12-month period ending on September 30, have a sales tax nexus as a remote seller. Note: Nonprofit organizations that make sales of goods or services are generally required to obtain a Connecticut Sales and Use Tax Permit and to collect sales tax on those sales. However, 501(a) tax-exempt organizations may qualify as exempt from collecting tax on the sales of tangible personal property at up to five (one-day) fundraising events per year, as long as they do not include sales at a retail establishment operated by the nonprofit. 501(a) tax-exempt organizations may also provide sellers with a completed exemption from sales tax certificate (CERT-119) for qualified purchases.

  1. Add a Sales Tax Account

    Log in to your myconneCT account to add a sales tax account. Your Sales Tax Registration Number is generally a 10 or 11 digit number ending with 001.

Connecticut Sales Tax Filing Requirements & Deadlines

There is one sales tax filing requirement & deadline you may need to complete in Connecticut. You can follow the guide below or use Mosey to do it.

Connecticut Sales Tax Reporting for LLP, LLC, Corporation

Connecticut has only one statewide sales tax; there are no additional sales taxes imposed by local jurisdictions. Your filing frequency depends on your sales liability of the prior 12-month period ending June 30: if you owed $1,000 or less, you are an annual filer. If you owed $1,001 to $4,000, you are a quarterly filer. Businesses with larger tax liability are monthly filers and may be subjected to additional payment and filing requirements. Note: The filing frequency of a new business is assigned during sales tax registration based on its expected sales. A return must be filed even if there's no tax due in the reporting period.

  1. File and Pay Sales Tax

    Log in to your myconneCT account to file and pay sales tax online.

Connecticut's Sales Tax Registration & Reporting Agencies

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