How to Get a Resale Certificate in Connecticut

Every business selling taxable goods or services in Connecticut needs a sales tax permit, also called a resale certificate or seller's permit. Without one, you cannot legally collect sales tax from customers. The good news: Connecticut makes the process straightforward. You can file online through the Department of Revenue Services (DRS), pay a one-time $100 registration fee, and start selling within days.

This guide walks you through exactly what you need, the step-by-step filing process, timelines, costs, and the most common mistakes to avoid.

What Is a Connecticut Resale Certificate?

A Connecticut resale certificate is your official authorization to collect sales tax on behalf of the state. It is also called a "Sales and Use Tax Permit" or "seller's permit." The certificate proves to the Connecticut Department of Revenue Services that you are registered to collect and remit sales tax from customers.

When you hold a valid resale certificate, you are legally permitted to:

• Collect 6.35% state sales tax (Connecticut's current rate) from customers on taxable sales
• Collect local sales tax, which varies by municipality
• Display your permit number at your business location(s)
• File monthly or quarterly sales tax returns with the DRS

Connecticut sales tax applies to most tangible personal property and many services. However, some items are exempt: groceries, prescription drugs, and certain medical equipment do not trigger sales tax. If you are unsure whether your products or services are taxable, the DRS website provides a detailed list and the DRS can answer questions by phone or email.

Who Needs a Connecticut Resale Certificate?

You need a resale certificate if your business sells any taxable product or service in Connecticut. This includes:

• Retail shops (clothing, furniture, electronics, etc.)
• Food service and restaurants
• Professional services that are subject to tax (consulting, repair, installation)
• E-commerce sellers shipping to Connecticut customers
• Home-based businesses selling tangible goods
• Subscription or membership services (in some cases)

You do NOT need a resale certificate if your business only provides exempt services, such as healthcare, education, or legal advice, or if you sell only exempt products like groceries or prescription medications. However, many service providers still register because they occasionally sell taxable items or provide mixed-tax services. When in doubt, register. There is no penalty for having a permit you do not use, and it protects you from penalties if the DRS later determines a service is taxable.

Before You Start: What You Will Need

Filing for a Connecticut resale certificate requires basic business information. Gather these materials before you begin:

• Your federal Employer Identification Number (EIN), issued by the IRS. If you are a sole proprietor with no employees, you can use your Social Security Number instead.
• Your Connecticut business address. This must be a physical location where you conduct business, not a post office box.
• Your business legal name and, if applicable, any trade names (DBA names) you operate under.
• Business structure type: sole proprietorship, partnership, LLC, corporation, or other entity.
• Description of the products or services you will sell.
• Expected monthly sales volume (a rough estimate is fine).
• Your personal contact information: phone number and email address.

If you have not yet obtained an EIN, you can apply for one free through the IRS website (irs.gov) before filing for your resale certificate. The EIN application is quick and you receive your number immediately online. Allow a few days for it to appear in the IRS system if you file by mail instead.

Step-by-Step: How to Obtain Your Connecticut Resale Certificate

Step 1: Verify Your Business Name is Available and Compliant

Before filing for a sales tax permit, confirm that your business name does not conflict with existing registered businesses in Connecticut. Use the Connecticut Secretary of State business search at https://service.ct.gov/business/s/onlinebusinesssearch.

Search for your exact business name and any variations. If your name is similar to an existing business, the DRS may reject your permit application or you may face legal issues later. If your name is available and you plan to operate as an LLC or corporation, also reserve or file your formation documents with the Secretary of State before applying for the sales tax permit. This step is optional for sole proprietors and partnerships but recommended.

Step 2: Complete Your Application Through Business.CT.gov

The Connecticut Department of Revenue Services accepts sales tax permit applications through the Business.CT.gov online portal and the eLicense system. This is the fastest method.

Visit https://portal.ct.gov/drs/sales-tax/tax-information and select "Apply for a Sales and Use Tax Permit." The portal will guide you through an online form. You will enter:

• Your business name and legal structure
• Your EIN (or SSN if no EIN)
• Business address (must be physical, not a mail drop)
• Mailing address (can differ from business address)
• Phone number and email
• Description of products or services sold
• Estimated monthly sales amount
• Ownership information (name, address, and ownership percentage for each owner)

The form is straightforward and takes about 10 to 15 minutes to complete. Save your application so you can return to it if needed. The portal will assign you a temporary reference number.

Step 3: Pay the $100 Registration Fee

Connecticut charges a one-time $100 registration fee for your Sales and Use Tax Permit. This is a flat fee, regardless of your business size or sales volume.

The Business.CT.gov portal accepts credit card and bank transfer payments. Select your payment method and complete the transaction. You will receive a payment confirmation immediately. Keep this confirmation for your records.

Step 4: Receive Your Sales Tax Permit Number

After the DRS processes your application and payment, you will receive your permit number by email. This typically happens within 1 to 3 business days. Your permit number is also called your "Sales Tax Account Number" or "Sales Tax Registration Number."

The DRS will send you a PDF or physical permit certificate. Print or save this document. Connecticut law requires you to display your permit number at each location where you conduct business. For home-based businesses, keep your permit certificate with your business records. For storefronts or offices, post it visibly.

Step 5: Set Up Your Tax Remittance Schedule

Once you receive your permit, the DRS will assign you a sales tax filing schedule: either monthly or quarterly, depending on your expected sales volume. Monthly filers typically have higher anticipated sales; quarterly filers have lower anticipated sales.

You will file your sales tax return and send payment to the DRS on your assigned due dates. The DRS website shows your filing schedule and due dates in your online account. If your sales volume changes significantly after the first year, you can request a schedule change.

Timeline and Processing

Here is what to expect after you file:

• Application submission: Instant (if filed online)
• Payment processing: 1 to 2 business days
• Permit issuance: 1 to 3 business days after payment clears
• Permit delivery: Email (immediately upon approval) or mail (5 to 7 business days)

In most cases, you will have your permit number within 3 to 5 business days of filing. If you need your permit urgently, call the DRS at their main phone line or contact them through the Business.CT.gov portal to confirm your application status. Processing is generally faster than you expect, especially if you file online.

Common Mistakes to Avoid

Here are the most common errors that delay or complicate your permit application:

Using a post office box as your business address. Connecticut law requires a physical business address where you actually conduct work. A PO box will cause the application to be rejected. Use your actual store, office, or home address (for home-based businesses).

Missing or incorrect EIN. If you enter your EIN incorrectly, the DRS may reject your application or flag it for manual review. Double-check your EIN before submitting. If you are a sole proprietor and have no EIN, you can use your Social Security Number instead, but an EIN is preferred and free to obtain.

Vague business description. Do not write "retail business" or "services." Be specific: "sale of clothing and accessories," "restaurant and bar," "software consulting." Specificity helps the DRS route your account to the correct department and ensures your filing schedule matches your actual business.

Underestimating expected sales volume. If you estimate very low sales and later exceed them significantly, the DRS may reassess your filing frequency or conduct an audit. Be honest and slightly generous with your estimate. If actual sales are higher than expected, that is not a penalty, only if you underestimated on purpose to avoid tax obligations.

Not displaying your permit once received. Connecticut law requires you to display your permit number or certificate at your place of business. Failure to display it is a separate violation, even if your permit is valid. Print your permit and post it visibly, or keep it in a highly accessible location if you operate from home.

Filing with the wrong state agency. Sales tax permits come from the Connecticut Department of Revenue Services, not the Secretary of State. The Secretary of State handles business formation (LLC, corporation registration), while the DRS handles tax registration. Use the correct portal and do not confuse the two processes.

What Happens After You Get Your Resale Certificate

Once you have your permit number, you must fulfill ongoing obligations:

Collect sales tax from customers. On every taxable sale, add 6.35% state sales tax to the customer's bill. Some municipalities also impose local sales tax, typically 0.5% to 1.5%. The combined rate is your effective sales tax rate. Your total collected goes to the state and local jurisdictions.

File tax returns on schedule. The DRS will assign you monthly or quarterly filing. You must file a sales tax return on each due date, even if you had no sales that period (you would file a zero return). Penalties for late filing start at $10 and increase based on how late you are. Filing online is faster and reduces errors.

Pay sales tax owed by the due date. Your return shows the total sales tax you collected and any credits or adjustments. You remit this amount by the due date. If you did not collect enough tax (for example, if you accidentally charged a lower rate), you still owe the difference. Late payment carries penalties and interest.

Keep detailed sales records. The DRS may audit your business and will request documentation of your sales, expenses, and tax payments. Keep invoices, receipts, bank statements, and tax returns for at least three years. Organized records make audits faster and protect you if questions arise.

Renew your permit if required. Connecticut does not require annual renewal of your sales tax permit, but the DRS will ask you to update your registration if your business address, business structure, or ownership changes. File an amendment form on the DRS website if any key information changes.

Frequently Asked Questions

Can I apply for a resale certificate before I officially form my LLC or corporation?

Yes. You can apply as a sole proprietor using your Social Security Number before you file formation documents. However, once you form an LLC or corporation, you should update your sales tax permit registration with your new EIN and legal structure. The DRS allows amendments to your permit, and they typically process in 1 to 3 days.

What if I sell both taxable and exempt items?

You still need a resale certificate because you sell some taxable items. You collect tax only on the taxable portion. Keep sales records that separate taxable from exempt sales so your tax returns are accurate.

Is the $100 fee a one-time charge or annual?

It is a one-time fee. You do not pay it again unless your permit is revoked and you reapply. There is no annual renewal fee for Connecticut sales tax permits.

How do I display my sales tax permit?

Print your permit certificate or permit number and post it in a visible location at your business. For home-based businesses, keep it with your business records where you can produce it if the DRS or a customer requests it. The law requires you to have it displayed or readily available, not hidden in an office file.

What if I move my business to a different Connecticut address?

File an amendment to your sales tax registration with your new address. Use the DRS website to update your registration. This typically takes 1 to 2 business days. Do not wait to notify the DRS if you move, as mail sent to your old address could cause you to miss important notices.

Do I need a separate permit for each location if I have multiple stores?

No. One sales tax permit covers all of your business locations in Connecticut. However, you must list each location when you apply or update your registration. The DRS may assign you separate account numbers per location for reporting purposes, but you file one sales tax return that includes all locations unless directed otherwise.

Key Takeaways

Getting a Connecticut resale certificate is straightforward and essential for any business selling taxable goods or services in the state. File online through the Department of Revenue Services, pay a one-time $100 fee, and you will have your permit within a few days. Use your permit number to legally collect sales tax from customers and meet your ongoing tax filing obligations. Keep accurate records, file on schedule, and update the DRS if your business information changes.

Disclaimer: This article is informational and does not constitute legal or tax advice. Sales tax rules can be complex and vary by business type, product category, and municipality. For guidance specific to your business, consult a Connecticut CPA or tax attorney, or contact the Connecticut Department of Revenue Services directly at https://portal.ct.gov/drs or by phone.