Connecticut Sales Tax Exemptions

What is Exempt From Sales Tax In Connecticut?

connecticut sales tax exemption

Beginning on the July 1st, 2011, the state of Connecticut levies a 6.35% state sales tax on the retail sale, lease or rental of most goods. No local jurisdictions apply an additional sales tax, therefore the state rate is fixed at 6.35%.


Use tax is due on items purchased outside of the state and brought into Connecticut for use, storage or consumption. The same 6% rate applies to use tax as well. In general, when you register your business with the state of Connecticut, you will be set up to file sales tax returns on a quarterly basis. If your sales tax liability is more than $4,000 for the prior 12-month period, beginning July 1 and ending June 30, your filing status will be changed to monthly. Monthly returns are to be filed on or before the last day of the month following the month in which the purchases were made. For example, purchases made in the month of January should be filed with the state of Connecticut on or before the last day of February.

Need more information?

For more information on Connecticut sales tax exemptions please visit the sites below.

Sales Tax Compliance FAQs

Sales tax compliance can be intimidating, but it doesn't have to be!

  • Do I have to charge sales tax?

    You do if your business is considered to be "doing business" within a state. The Supreme Court ruling in SD v. Wayfair on June 21, 2018 changed the standard by which this was determined. Now, if your business has a sufficient volume or revenues or transactions within a state, you have established nexus within that state. Nexus means you have to charge sales tax to your customers within that state.

  • How do we know if we have sales tax nexus in a state?

    Agile will complete a sales tax nexus study to determine in which states you have met or exceeded the nexus thresholds. All we need are your: a) physical locations, and; b) prior years sales records to analyze both revenues and transaction counts per state.

  • How do I know what sales tax rate to charge?

    Don't try to reinvent the wheel. There are a number of excellent sales tax rate software solutions in the marketplace and we are partners with ALL of them. Ask us for our input on which would be the best choice for your business and we'll gladly guide you and provide an introduction to one (or several options) available in the marketplace.

  • Are my products or services subject to sales tax?

    Well, the answer like most everything is sales tax is, "it depends," because each state drafts its own laws and they vary widely from state-to-state. A sales tax consulting firm, such as Agile, should perform a taxability study on the products and services your business sells in any states where you have nexus to determine whether you should be collecting sales tax on your sales of those products or services.

  • Which sales tax software is best for my business?

    There are a number of excellent choices in the sales tax software space. We are a sales tax consulting partner with ALL the available options in the marketplace. Leverage our years worth of firsthand experience with these options to help guide you to the best choice for your business.

  • How do I register for sales tax with a state?

    Agile can do this for you. Most states require the same information to process a registration. Things like: legal entity name, FEIN #, date of incorporation, etc. All states require the names, date-of-birth and social security numbers of officers. Some states will even require a copy of an officer's driver's license.

  • Should we register or file a voluntary disclosure agreement ("VDA")?

    Completing a registration will allow your business to begin collecting taxes going forward. If you have taxes from prior periods to disclose, a VDA will enable you to do so with the added benefit of the penalties being waived.

  • How do states determine your filing frequency?


    Your assigned filing frequency depends on the volume of transactions you have within a state. Many states will ask about your expected volume of sales during the registration (or VDA) process. Some other states will initially default your account to monthly filings. All states will re-evaluate your filing frequency on an annual basis.

  • Will Agile handle any notices and communications received from the state(s)?

    Yes! We will absolutely handle all notices and communications you receive from the state(s) regarding sales and use tax. We provide a comprehensive, turnkey solution to outsource your sales and use tax issues.

  • How do I determine my taxable sales?

    Determining taxable sales is the first, and most important step in determining your monthly sales tax filing obligations. Sales tax software, if properly configured, can solve or at least simplify this process. Combine that with an accurate matrix classifying your products or services taxability, and this becomes a cinch! 

Connecticut Sales Tax Compliance Details

Here is useful Connecticut sales tax compliance information our Agile team members felt could be helpful:

Pre-Payments & Accelerated Payments

  • Businesses with tax liabilities between $25,000 and $100,000 per quarter must pay 50% of the previous year's liability or estimate their monthly liabilities and pay 50% of that amount.
  • Businesses with a tax liability of over $100,000 per quarter must pay 50% of the previous year's sales & use taxes.

Local Taxing Jurisdictions

  • Local taxing jurisdictions with varied rates; generally 1% or 2%.
  • Allegheny County adds 1%.
  • Philadelphia County adds 2%.

Filing Frequencies

  • Three filing frequencies: monthly, quarterly, and semi-annually.
  • Monthly and quarterly filings due by the 20th of the following reporting period.
  • Semi-annual due dates vary: August 20th for January to June, February 20th for July to December.
  • Weekend or holiday due dates pushed back to the following business day.

Timely Filing Discounts

  • Monthly filing discount: $25 or 1% of tax collected, whichever is less.
  • Quarterly filing discount: $75 or 1% of tax collected, whichever is less.
  • Semi-annual filing discount: $150 or 1% of tax collected, whichever is less.

How to Calculate Connecticut Sales Tax?

Utilize the following sales tax formula to obtain the necessary sales tax:


Sales tax = total amount of sale x sales tax rate



If you are looking for more information, check out our Sales Tax Consulting page or talk to one of our Experts:

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