How to Register for a Sales Tax Permit in Connecticut (2025 Guide)

Starting a business in Connecticut comes with exciting opportunities. But before you can legally make a sale, securing your Connecticut sales tax permit is a must. This essential step ensures you’re compliant with state tax laws and ready to collect sales tax the right way. 

Whether you’re setting up a local shop, selling at craft fairs, or launching an online store, the registration process is simpler than you might think. 

In this guide, we break it all down: who needs a permit, how to apply, and what to expect after registration. With the right information, getting your Connecticut sales tax permit can be quick, painless, and one step closer to growing your business with confidence.

What is a Sales Tax Permit in Connecticut?

A sales tax permit in the state of Connecticut is a legal authorization that allows businesses to collect and remit sales tax on taxable goods and services. Issued by the Connecticut Department of Revenue Services (DRS), this permit is essential for ensuring your business complies with state tax laws. 

The general sales tax rate is 6.35% and applies to the retail sale, lease, or rental of most goods (including digital goods). However, special sales tax rates may apply to certain sales, as detailed below:

Without a valid sales tax registration Connecticut, collecting sales tax is illegal and can result in penalties. 

The penalty starts at $250 for the first day of non-compliance and $100 for each additional day. However, the penalty can be waived if you can demonstrate that the failure to obtain or renew the permit was due to reasonable cause and not intentional neglect.

Both in-state and out-of-state sellers must pay close attention to these requirements to operate legally and avoid costly compliance issues.

Do You Need to Register for a Sales Tax Permit in Connecticut?

You are required to register with the Department of Revenue Services (DRS) for sales and use tax if you plan to engage in any of the following activities in Connecticut:

• Sale, rental, or lease of goods
• Sale of taxable services
• Operating a hotel, motel, lodging house, or bed and breakfast

Additionally, if you will be selling at events such as flea markets, craft shows, trade shows, antique shows, or fairs, even if for just one day, you must obtain a permit. The permit must be displayed prominently at your booth or table.

If you purchase an existing business, you cannot use the previous owner’s permit. You must obtain a new one. If your business operates from more than one location, you will need to register each location separately.

Even if you don’t have a physical location in Connecticut but are selling to the residents somehow, you must go for a Connecticut remote seller sales tax registration. 

The requirement applies to all business entities, including individuals, corporations, partnerships, and other organizations, regardless of the number of sales or the amount of tax collected. 

Manufacturers, wholesalers, and retailers must obtain a permit. All building contractors, including subcontractors, must also obtain a permit before providing any services, regardless of whether those services are taxable or the client is a tax-exempt entity. 

Step-by-Step: How to Get a Sales Tax Permit in Connecticut

If you’re wondering how to get a sales tax permit in Connecticut, the process is more straightforward than you might think. Whether you’re an in-state retailer or a remote seller, following these steps will ensure you’re registered properly and legally able to collect sales tax in the state.

Step 1: Gather Required Information

Before starting your application, collect the following details:

• Legal business name and structure
• Federal Employer Identification Number (FEIN) or Social Security Number (SSN)
• Business address and contact info
• North American Industry Classification System (NAICS) business activity code
• Estimated monthly sales and taxable sales in Connecticut

Step 2: Visit the myconnectCT Online Portal

Head over to the myconnectCT portal to start your online registration.

Step 3: Create an Account or Log In

If you’re a first-time user, you’ll need to create an account. Returning users can simply log in to begin the application.

Step 4: Complete the Connecticut Sales Tax Registration Application

You will have to fill and submit the Form OS‑114. Once done, pay electronically through the DRS myconneCT system. All businesses are required to complete and submit this form to report their sales activity in Connecticut, even if no sales occurred or no tax is due. 

You must report both taxable and nontaxable sales based on the filing frequency (monthly, quarterly, or annually) assigned to you by the Department of Revenue Services.

Step 5: Pay the Registration Fee

Connecticut charges a $100 non-refundable fee for a sales tax permit. This payment must be submitted during the application process. After filing your return on myconneCT, you’ll be directed to the payment screen where you can:

• Authorize a direct withdrawal from your checking or savings account.
• Choose the payment date (up to the due date).
• Receive a confirmation number for your records.

You can also use the “Make a Payment” feature separately to pay bills or make advance payments without filing a return.

Step 6: Receive Your Connecticut Sales Tax Permit

Once approved, your permit will be issued electronically. You’ll also receive details about filing frequency and reporting requirements.

How Much Does It Cost to Register for a Sales Tax Permit in Connecticut?

Registering for the state of Connecticut sales tax permit requires a one-time fee of $100. This fee is payable directly from a checking or savings account; credit cards are not accepted. 

Connecticut’s registration fee is higher than that of other states. For instance, many states, such as Florida and Georgia, offer free sales tax permit registration.

Despite the initial cost, Connecticut’s automatic renewal process eliminates the need for manual renewals or additional fees, simplifying long-term compliance for businesses.

How Long Does It Take to Get Approved?

When you apply for a sales tax permit through myconneCT, you can typically access a temporary permit immediately upon successful submission of your application. This temporary permit allows you to begin collecting sales tax right away.

The permanent sales tax permit is usually mailed to your business address within 10 to 15 business days.

Quick Tip: After submitting your application, be sure to check your email, including your spam or junk folders, for any confirmation messages or updates.

If you choose to register by mail, the processing time may extend to two to three weeks.

Common Mistakes to Avoid When Registering

Registering for a sales tax permit is a key step in launching or expanding your business, but overlooking a few details can lead to delays or compliance issues. Here are some common mistakes to watch out for:

• Entering Incorrect Business Details: Make sure your legal business name, address, and EIN match your IRS records exactly.
• Choosing the Wrong NAICS Code: Selecting an inaccurate business activity code can result in incorrect tax filing obligations. Use the NAICS lookup tool to find the right match.
• Missing Responsible Party Information: You must provide accurate details for the owner or responsible party, including SSN or Federal Employer ID Number (FEIN).
• Underestimating Taxable Sales: Providing low or unrealistic sales estimates may affect how often you’re required to file returns.
• Failing to Register as a Remote Seller When Required: If you meet Connecticut’s economic sales tax nexus threshold, you’re required to complete remote seller sales tax registration in Connecticut even without a physical presence in the state.

What Happens After You Register?

Once you’ve successfully registered for your sales tax permit, there are a few key steps to follow to stay on track and remain compliant with state tax laws.

1. Account Setup and Login Credentials

You’ll receive login credentials for the myconneCT portal, Connecticut’s online taxpayer service center. This portal is where you’ll manage your sales tax filings and payments, view your account details, and update your business information if needed.

2. Filing Frequency

After registration, Connecticut will assign you a filing frequency based on your expected sales volume. Typically, you may be required to file:

• Monthly
• Quarterly
• Annually

This will depend on how much taxable sales you expect in Connecticut, with higher-volume businesses required to file more frequently. Be sure to follow the assigned schedule to avoid penalties.

3. Collecting and Remitting Sales Tax

Once registered, you’re legally required to start collecting sales tax on taxable goods and services you sell. You must complete the sales tax remittance by the due date for each filing period.

4. Filing Zero Returns

Even if your business didn’t make any taxable sales during a reporting period, you’re still required to file a zero return. Failing to file, even if there’s no sales tax to remit, could result in penalties or the suspension of your permit.

5. Regular Account Maintenance

Stay compliant by regularly logging into the myconneCT portal to:

• File returns on time
• Make payments for any sales tax due
• Monitor your account for any updates or changes to your business status

By staying on top of your filing obligations and maintaining up-to-date records, you’ll keep your business running smoothly and avoid any issues with Connecticut’s Department of Revenue Services.

Special Considerations for Out-of-State or Remote Sellers

If you’re running an e-commerce business or selling remotely to customers in Connecticut, it’s crucial to understand the state’s specific tax rules. Unlike traditional in-state businesses, remote sellers (businesses without a physical presence in Connecticut) must still comply with out-of-state sales tax rules in Connecticut and register for a remote seller sales tax registration if they meet certain criteria.

Marketplace Facilitator Laws

Connecticut has laws that impact marketplace facilitators, platforms like Amazon, eBay, or Etsy that allow third-party sellers to list and sell products. If you sell through these marketplaces, the platform itself may collect and remit the sales tax on your behalf. 

However, you may still need to register if you meet the economic physical nexus threshold, or if the marketplace facilitator does not collect the tax for you. Always double-check the platform’s tax policies to ensure you’re fully compliant.

Economic Nexus Thresholds

As a remote seller, you are required to register for a sales tax permit in the state of Connecticut if you exceed the state’s economic nexus threshold. In Connecticut, this means:

• $100,000 in gross sales
• 200 or more separate transactions annually in the state

You must register for a remote seller sales tax registration in Connecticut if your business meets or surpasses either of these sales tax thresholds. This applies even if you don’t have a physical location or employees in the state.

Filing and Remitting Sales Tax

Once registered, you’ll need to collect and remit sales tax just like an in-state seller. Your filing frequency will depend on your sales volume, and you’ll be required to file returns regularly, either monthly, quarterly, or annually.

For remote sellers and out-of-state eCommerce businesses, this means staying on top of your sales tax obligations, even if you’re based across the country. Ensuring compliance with Connecticut’s out-of-state sales tax rules will help you avoid penalties and stay legal while doing business with Connecticut customers.

Resources & Where to Register

Here’s everything you need to get started with your sales tax permit in Connecticut and stay compliant:

• MyconneCT Portal (for online registration): Login & Registration Portal 
• Forms & Documents: Sales Tax Permit Application 
• Help & FAQs: Tutorials
• Contact Information 860-297-5962 (Connecticut Department of Revenue Services) | drs@po.state.ct.us
• Mailing Address: Connecticut Department of Revenue Services, 450 Columbus Blvd, Suite 1, Hartford, CT 06103-1837

Having these resources at hand will help you register smoothly and stay up-to-date on your sales tax obligations in Connecticut.

Simplify Sales Tax Compliance with Commenda

Navigating sales tax compliance can be complex, especially for remote sellers and online businesses. That’s where Commenda comes in. A global sales tax platform, is the easiest way to handle your Connecticut sales tax registration and ongoing compliance without the guesswork or red tape.

With Commenda, you can:

• Automate your sales tax registration in Connecticut and other states, ensuring you’re compliant in no time.
• Get ongoing filing support as Commenda automatically files your returns, so you never miss a deadline.
• Stay compliant across multiple states, including Connecticut, with one platform that handles multi-state compliance for you.

Whether you’re a marketplace seller or running an eCommerce business, Commenda simplifies the entire process, so you can focus on growing your business, not dealing with tax issues.

Learn more about how Commenda can streamline your sales tax process.