Connecticut Sales Tax License Registration

Aug 28, 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

Review your compliance risks, free.

More from the blog

Learn how to keep your business compliant in all 50 states across payroll, HR, Secretary of State, and tax.

Employee vs. Contractor: Understanding the Difference

Contractor work arrangements are popular. According to the US Government Accountability Office, about one-third of all businesses and almost 90% of Fortune 500 companies use independent contractors in some capacity. Hiring contractors can be a particularly attractive option for early-stage businesses because it allows them to leverage specialized skill sets while building their internal teams. But contractors are very different from employees, and the two mustn’t be conflated—or hefty penalties can apply. While contractors are self-employed individuals or even incorporated business entities, employees are typically economically dependent on their employers and so are entitled to certain rights and protections under the law. For this reason, misclassifying an employee as an independent contractor is a compliance violation: It denies a worker rights to which they are otherwise entitled.

Gabrielle Sinacola | Aug 8, 2023

Case Study: Farther Finance

The Highlights 1,225 requirements checked 37 states managed with Mosey 26 state and local payroll registrations completed The Company: Meet Farther Finance Farther Finance is a rapidly growing financial services company that operates on a remote-first model. With a team that expanded from 90 to 199 members in just a year, the company saw significant growth and expansion into new states. On a small but mighty team of two, Allison Stortz, Sr. Human Resources Business Partner, had to manage this growth on top of a wide range of HR responsibilities including payroll, benefits, performance management, compliance, employee handbooks, policy procedures, and more.

Paul Boynton | May 12, 2025

Can Employers Get in Trouble for Not Withholding Taxes?

Taxes are an inevitable part of running a business, and as a business owner, it’s common to struggle with understanding tax laws. However, failing to withhold taxes from employees’ paychecks properly can lead to serious consequences for your organization. This is your guide to tax withholding, including why it matters, what happens if you fail to meet your obligations, and how Mosey can help with state compliance.

Gabrielle Sinacola | Jan 29, 2025

Ready to get started?

Schedule a free consultation to see how Mosey transforms business compliance.