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Connecticut Sales Tax Calculator

Written by:

Mark Stewart is the in-house Certified Public Accountant, an accomplished author and financial media specialist.

Connecticut Sales Tax Calculator

If your business sells physical products or certain types of services, you will need to collect and pay sales tax. In Connecticut, the first step is visiting the revenue department’s website and registering for sales tax in order to acquire a seller’s permit, or sales tax permit. 

Use our Sales Tax Calculator to determine your exact sales tax rate and total purchase amount. 

Connecticut Sales Tax Calculator

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What Products and Services Are Subject to Sales Tax in Connecticut?

Sales of tangible goods are subject to sales tax in Connecticut. Services subject to sales tax include advertising, contractor services, cable, dry cleaning and laundry, and maintenance to real estate property. Bicycle helmets, child car seats, college textbooks, and medical goods and equipment are exempt from sales tax in Connecticut. 

Connecticut Sales Tax Rate

The state sales tax rate in Connecticut is 6.35%.

Connecticut sales tax rates vary depending on which county and city you’re in. Check Connecticut Department of Revenue Services site for the exact rates.

Sales Tax Rate

How to Register for Connecticut Sales Tax

In Connecticut, acquire a seller’s permit by following the Department of Revenue’s detailed instructions for registration: 

  1. Visit the Department of Revenue services website
  2. Fill out the business registration form.
  3. Pay the $100 fee to apply for a sales tax permit.


In Connecticut, and across the country, collecting sales tax is a must if you want to avoid potentially heavy fines and even closure. It’s crucial that you follow your state’s laws, and you might consider consulting with an accountant or tax attorney to make sure you’re in full compliance.


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Connecticut Sales Tax Calculator