How to Verify a Resale Certificate by State: 2025 Guide

When a customer hands you a resale certificate claiming to be buying your products for resale, it can be tempting to take them at their word and simply sell them the products without sales tax.

But what if that resale certificate were fraudulent? Or what if the buyer’s sales tax permit has expired? Most states hold you, the seller, accountable if you accidentally make a non-taxed sale. Penalties can include repaying the sales tax you didn’t charge plus a fine.

Fortunately, most states allow you to verify a resale certificate online easily. We'll explain what you need to know about resale certificates and how to verify them in this state-by-state guide.

Resale Certificate Lookup for Every US State

States use different terminology when it comes to looking up a resale certificate. In most cases, they search for your customer’s state sales tax ID number. Some states allow you to also search by Federal Employer ID Number (FEIN) or another business ID number, but you still want to ensure they are registered to collect sales tax.

In addition, a handful of states don’t have a public way to verify a resale certificate. In this case, be sure your buyer completes the correct sales tax exemption form accurately and completely to avoid fines and penalties if the certificate turns out to be fraudulent.

Alabama

1. Visit My Alabama Taxes
2. Click “Verify an exemption certificate.”
3. Choose whether to enter your customer’s Federal Employee ID Number (FEIN), Individual Tax ID Number (ITIN), or Social Security Number (SSN) and enter it.
4. Enter the customer’s Exempt Sales Account Number

Arizona

1. Go to the Arizona Department of Revenue License Verification page.
2. If it doesn’t take you to the page, click “License Verification” in the top navigation bar.
3. Enter the 8-digit Transaction Privilege Tax License number provided by your buyer and click “Submit.”

Arkansas

1. Go to Arkansas Taxpayer Access Point.
2. Under "Inquiries," click "Validate Sales Tax Permit."
3. Enter the Permit ID Type (usually "Sales & Use Tax").
4. When the next box appears, enter the Permit ID number.
5. Click "Submit."

California

1. Go to the California Department of Tax and Fee Administration.
2. Under the “How Do I…” drop-down menu, select the “Verify a Permit, License or Account Now” button.
3. Answer the first question (“Which taxable activity type information are you searching for?”) by using the dropdown menu to select “Sellers Permit.”
4. Enter the Identification Number provided to you by the buyer

Colorado

1. Go to the Colorado Department of Revenue.
2. Click “Verify a License or Exemption Certificate.”
3. Select the number of licenses to verify
   1. Select “Yes” to verify a single license
   2. Select “No” to verify multiple licenses 
4. The “Verify a License or Certificate” section will appear.
5. Enter either the 8-digit Colorado Account Number (CAN) or the 12-digit Location ID to be verified. Don’t include hyphens or spaces.
6. If the account can’t be verified, the form will return “NOT FOUND.”

Connecticut

1. Go to the Connecticut License Lookup page.
2. Scroll down to the bottom and choose “Lookup a License.”
3. For resale certificates/sellers’ permits, search by License Number.
4. You can also search by “Business Name/DBA” or “Address,” but you’ll want to be sure that that business holds a valid sales tax license.
5. Click Submit.

Florida

1. Go to the Florida Seller Certificate Verification.
2. In the “This request is for verification of” dropdown, choose “Sales and Use Tax.”
3. In the “Contact Name” field, enter the seller’s contact name.
4. In the “Certificate Number” field, enter the seller’s 13-digit certificate number.
5. Click “Verify.”

Georgia

1. Go to the Georgia Department of Revenue.
2. Click “Verify Sales Tax ID(s).”
3. Read the disclaimer and click “Next.”
4. In the box under “Enter Sales Tax Number Only,” enter the buyer’s sales tax number. You can also verify more than one sales tax number.
5. When ready to verify, click “Next.”
6. You’ll see the status of the customer’s Georgia sales tax license.

Hawaii

1. Go to the Hawaii Tax License Search.
2. Click “Search Tax Licenses.”
3. Enter the “Taxpayer Name,” “DBA Name,” and “Customer ID.”
4. Click “Search.”

Idaho

1. Go to the Idaho State Tax Commission.
2. Click “Validate a Permit.” 
3. Under the permit type dropdown, select “Sales & Use Tax.”
4. Enter the buyer’s 9-digit Permit Number with no hyphens.
5. Click “Next” for the results.

Illinois

1. Go to My Tax Illinois.
2. Click “Verify a Sales Tax Exemption number (E-number).”
3. Enter the customer’s exemption number.
4. Click “Search.”

Indiana

Online verification of Indiana resale certificates is not available. 

Indiana buyers should provide you with a completely and accurately filled out General Sales Tax Exemption certificate (Form ST-105) (link downloads a PDF) and should follow all instructions for filing it out accurately and completely. 

You can contact the Indiana Department of Revenue through phone, email, or mail with questions. 

Iowa

A dedicated Iowa resale certificate lookup is not available, but as a workaround, you can:

1. Go to the Iowa Data page.
2. Click the “Data” tab.
3. Use the search bar on the far right of the page to find your buyer’s business name, address, etc., and verify that their business registration is listed as “Active” in the far left “Active or Inactive” column.

Kansas

1. Go to Kansas Exemption Certificate lookup page.
2. Enter the buyer’s Kansas Tax Registration Number.
3. Click “Search.”

Kentucky

Online verification of Kentucky resale certificates is not available. 

Kentucky buyers should provide you with a completely and accurately filled out Kentucky resale certificate.

You can contact the Kentucky Department of Revenue by phone or use the online contact form with questions. 

Louisiana

To verify a Louisiana resale certificate online, you must also have a valid Louisiana sales tax registration. 

1. Go to the Louisiana Department of Revenue LaTAP page and scroll down to “Validate My Resale Certificate.” 
2. Enter your own Louisiana Account Number and business name. Then, enter the buyer’s Louisiana Account Number and business name.
3. Click “Search.”

You can contact the Louisiana Department of Revenue by phone, mail, or email for more information.

Maine

1. Go to the Maine Tax Portal.
2. Under “Additional Services,” click “Sales and Service Provider Tax Resale and Exemption Lookup.”
3. On the Certificate Lookup Page, select “Resale Certificate” from the drop-down menu for the Certificate Type and enter the buyer’s Certificate Number and Account ID.
4. Click “Search.”

Maryland

1. Go to Maryland’s Verify Sales and Use Tax Registration or Exemption page.
2. For ID Type, choose “Sales and Use Tax Exemption Certificate Number” from the drop-down menu.
3. Enter the buyer’s Maryland Sales and Use Tax exemption certificate number in the ID Value box.
4. Click “Search.”

Massachusetts

1. Go to the Massachusetts Sales Tax Resale Certification page.
2. Under ID Type, choose “Sales Tax Account ID.”
3. Next to “Seller Account ID,” enter your tax Massachusetts sales tax ID.
4. Next to “Buyer Account ID,” enter the buyer’s Massachusetts sales tax ID.
5. Click “Next” to get the results.

Michigan

Online verification of Michigan resale certificates is unavailable because Michigan does not issue exemption numbers. 

To verify the validity of a Michigan business, you can request the buyer’s FEIN or state business registration ID number and contact the Michigan Department of Treasury by phone to verify.

Minnesota

Online verification of Minnesota resale certificates is not available. 

Minnesota buyers should provide you with a completely and accurately filled out Minnesota resale certificate (Form ST-3).

You can contact the Minnesota Department of Revenue through phone or email with questions. (If not taken directly to a page with phone and email info, click “Licensing Contact.”)

Mississippi

1. Go to the Mississippi Department of Revenue website.
2. Under “Tools,” select “Verify a Permit Number.”
3. Under “Permit Type,” select “Sales Permit.”
4. Enter the buyer’s Permit ID.
5. Click “Search Permit.”

Missouri

Online verification of Missouri resale certificates is not available. 

Missouri buyers should provide you with a completely and accurately filled out Missouri Resale Certificate (Form 149).

Missouri also has an option to look up businesses with revoked sales tax licenses here. This should not be used as a substitute for verifying that the Missouri Resale Certificate is accurate because there’s still a chance for sales tax ID falsification.

You can contact the Missouri Department of Revenue via phone, email, or live chat with questions. 

Nebraska

Online verification of Nebraska resale certificates is not available. 

Nebraska buyers should provide you with a completely and accurately filled out Nebraska resale certificate (Form 13).

You can contact the Nebraska Department of Revenue via phone or email with questions.

Nevada

1. Go to My Nevada Tax.
2. Under “Registration and Licensing,” click “Verify a License or Permit.” 
3. On the next page, enter the Buyer’s License or Permit IT Number.
4. Click “Search.”

New Jersey

1. Go to the New Jersey On-Line Business Registration Certificate Service. 
2. Enter the “Name Control” (the first four letters of the business name) AND
3. Enter Business Entity ID (EIN, TIN, etc.) OR the Certificate Number (the buyer’s sales tax registration number).
4. Click “Submit.”

New Mexico

If your customer obtains a Non-Taxable Transaction Certificate (NTTC) from the Taxation and Revenue Department and executes it to you as a seller, you will not pass the gross receipts to your customer on qualifying transactions. You can accept paper NTTCs or use your TAP account to find NTTCs executed specifically for your business. To search for an NTTC executed for your business:

1. Log in to TAP and click on the “More Account Options…” link under the GRT account to which the NTTC was executed.
2. Under the NTTCs panel, select the “View NTTC Options” link.
3. Click on the “Seller’s Certificate” tab.

You will be able to see all the certificates executed to you by a business. You can sort your search by clicking on any of the column titles or by using the filter header link.

New York

1. Go to the New York Registered Sales Tax Vendor Lookup site.
2. Complete the security check.
3. Under “Vendor Information,” enter the buyer’s sales tax identification number.
4. Click “Continue.”

North Carolina

1. Visit the North Carolina Registry of Sales and Use Tax Numbers.
2. In Account ID/SST ID#, enter the buyer’s sales tax ID number.
3. Click “Submit.”

North Dakota

1. Go to the North Dakota Taxpayer Access Point.
2. Under “Lookups and Inquiries,” click “Sales & Use Permit Inquiry.”
3. Enter the buyer’s sales tax permit number.
4. Click “Search.”

Ohio

1. Go to the Ohio Department of Taxation’s Sales & Use Tax page.
2. Scroll down to “List of Active Vendors,” clicking this will download a spreadsheet of active Ohio vendors.
3. Open the spreadsheet and, using ctrl-F (Windows) or cmd-F (Mac), search within the spreadsheet for the buyer’s sales tax ID number or other identifying information.

Questions? Read the instructions for using the Ohio List of Active vendors here

Oklahoma

1. Go to OKTAP.
2. Under “Help,” click “Search.”
3. On the next page, click “Sales Permits.”
4. You’ll be taken to another page where you also select “Sales Permits.”
5. Enter the type of ID number your buyer gave you (this will either be an Exemption Account ID, Permit Number, or Sales Tax Account ID).
6. In the “Search Text” field, enter the ID number the buyer provided.
7. Click “Search.”

Pennsylvania

Online verification of Pennsylvania resale certificates is not available. 

Pennsylvania buyers should provide you with a Pennsylvania resale certificate and should follow all instructions for filing it out accurately and completely. 

You can contact the Pennsylvania Department of Revenue via phone with questions. 

Rhode Island

Online verification of Rhode Island resale certificates is not available. 

Rhode Island buyers should provide you with a Rhode Island resale certificate and follow all instructions for filing it out accurately and completely. 

You can contact the Rhode Island Division of Taxation via phone or email with questions. 

South Carolina

Online verification of South Carolina resale certificates is not available. 

South Carolina buyers should provide you with a South Carolina resale certificate and should follow all instructions for filing it out accurately and completely. 

You can contact the South Carolina Department of Revenue via phone or email with questions. 

South Dakota

Online verification of South Dakota resale certificates is not available. 

South Dakota buyers should provide you with a South Dakota resale certificate and should follow all instructions for filing it out accurately and completely. 

You can contact the South Dakota Department of Revenue with questions via phone, chat, or email. 

Tennessee

1. Go to the Tennessee Department of Revenue.
2. Under “Information and Inquiries,” click “View Options.”
3. Under “Other,” click “Sales & Use Tax Certificate Lookup.”
4. On the “Verify a Certificate” page, choose the certificate type. This will either be a “Blanket Sales and Use Tax Certificate of Resale” or “Streamline Sales Tax ID,” depending on the type of resale certificate you received from your customer.
5. Enter the customer’s Location ID or Streamline Sales Tax ID.
6. Click “Submit.”

Texas

1. Go to the Texas Comptroller Sales Taxpayer Search.
2. You can search by factors like taxpayer ID, location, zip code, or name. We recommend entering the buyer’s Taxpayer ID number in the “Taxpayer ID” field.
3. Click “Search” next to the field you chose to search by.

Utah

Online verification of Utah resale certificates is not available. 

Utah buyers should provide you with a Utah resale certificate (Form TC-721) and follow all instructions for filing it out accurately and completely. 

You can contact the Utah State Tax Commission via phone, chat, or email with questions. 

Vermont

Online verification of Vermont resale certificates is not available. 

Vermont buyers should provide you with a Vermont resale certificate (Form S-3) and follow all instructions for filing it out accurately and completely. 

You can contact the Vermont Department of Taxes via phone or contact form with questions. 

Virginia

Online verification of Virginia resale certificates is not available. 

Virginia buyers should provide you with a completely and accurately filled out Virginia resale certificate (ST-10).

You can contact Virginia Tax via phone or the contact form with questions. 

Washington

1. Go to the Washington State Department of Revenue Business Lookup.
2. Choose the “Reseller Permit Verification” button.
3. Upload the file that you created by following the instructions on the Reseller permit verification service page.
4. Click “Search.”

Washington DC

1. Go to MyTaxDC.
2. Under “More…” click “Search for Certificate/License Exemptions.” 
3. In the dropdown, choose “Resale Certificate.”
4. In the “Account ID” field, enter the customer’s DC Sales and Use Tax Account ID Number.
5. In the “Certificate/License ID” field, enter the buyer’s resale certificate number.
6. Click “Submit.”

West Virginia

Online verification of West Virginia resale certificates is not available. 

West Virginia buyers should provide you with a completely and accurately filled out Streamlined Sales Tax Certificate of Exemption.

You can contact the West Virginia Tax Division via phone or email with questions. 

Wisconsin

1. Go to the Wisconsin DOR My Tax Account page.
2. Under “Businesses,” click “Search account number/filing frequency.”
3. On the next page, choose “Sales and Use Tax.”
4. Choose the type of ID number your buyer provided (Usually “Wisconsin Tax ID Number” but may be a Federal Employer ID Number (FEIN) or Social Security Number).
5. Next to “ID,” enter the corresponding ID number.
6. Enter the business’s name or buyer’s last name.
7. Enter the buyer’s zip code.
8. Click “Next.”

Wyoming

Online verification of Wyoming resale certificates is not available. 

Wyoming buyers should provide you with a completely and accurately filled out Streamlined Sales Tax Certificate of Exemption.You can contact the Wyoming Department of Revenue via phone or email with questions.

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Verifying a Resale Certificate State by State: Conclusion

Each state has its own rules and regulations when it comes to verifying a resale certificate. Some states, like Virginia and Wyoming, do not allow online verification of resale certificates, instead business owners are required to fill out forms and submit them to the state directly.

If you’re ready to automate your sales tax compliance with sales tax experts, book a call with Zamp today!

About the author

Emily Kordys

Emily Kordys is a Content Marketing Manager with seven years of experience in the sales tax, auto, and real estate industries. She currently resides in North Carolina with her boyfriend and dogs, Shadow and Copr.