| Alabama (AL) |
My Alabama Taxes (MAT): "Verify an Exemption Certificate" |
Online lookup. |
| Alaska (AK) |
No statewide sales tax (local taxes may apply). Business entity search |
No sales tax: no resale/tax document needed. Link is the business entity search. The site blocks automated checks; it opens normally in a browser. |
| Arizona (AZ) |
AZTaxes TPT license verification |
Online lookup. |
| Arkansas (AR) |
ATAP: "Validate Sales Tax Permit" |
Online lookup. |
| California (CA) |
CDTFA seller's permit verification |
Online lookup. |
| Colorado (CO) |
Revenue Online: verify a license or exemption certificate |
Online lookup. |
| Connecticut (CT) |
CT eLicense lookup (DRS sales tax permits) |
Online lookup. |
| Delaware (DE) |
No sales tax. Division of Corporations entity search |
No sales tax: no resale/tax document needed. Link is the business entity search. |
| District of Columbia (DC) |
MyTax.DC.gov: verify a certificate |
Online lookup. |
| Florida (FL) |
Annual Resale Certificate page with the Seller Certificate Verification link |
Online lookup. |
| Georgia (GA) |
Sales tax ID verification tool |
Online lookup. |
| Hawaii (HI) |
Hawaii Tax Online: "Search Tax Licenses" |
Online lookup. |
| Idaho (ID) |
Idaho TAP: verify a seller's permit |
Online lookup. |
| Illinois (IL) |
MyTax Illinois: verify a registration / resale number |
Online lookup. |
| Indiana (IN) |
No public lookup of active certificates. DOR's revoked-merchant list; call DOR 317-232-2240 to verify |
No public online lookup. |
| Iowa (IA) |
Iowa Data Hub: Retail Sales and Retail Use Business Registrations explorer (DOR-recommended) |
Online lookup. |
| Kansas (KS) |
KDOR registration and certificate check |
Online lookup. |
| Kentucky (KY) |
No public lookup. Sales & Use Tax page; verify with the Division at 502-564-5170 |
No public online lookup. |
| Louisiana (LA) |
LDR resale certificate page: "Resale Certificate Validation" |
Online lookup. |
| Maine (ME) |
Maine Tax Portal: resale certificate lookup |
Online lookup. |
| Maryland (MD) |
Verify sales and use tax registration or exemption |
Online lookup. |
| Massachusetts (MA) |
Verify Form ST-4 buyer registration (MassTaxConnect) |
Online lookup. |
| Michigan (MI) |
No public lookup. Treasury sales tax license FAQ; call 517-636-6925 |
No public online lookup. |
| Minnesota (MN) |
No public lookup. Contact Minnesota Revenue to verify a tax ID |
No public online lookup. |
| Mississippi (MS) |
Mississippi TAP: "Verify a Permit Number" |
Online lookup. |
| Missouri (MO) |
MyTax Missouri "No Tax Due" check (registration and retail license) |
Online lookup. |
| Montana (MT) |
No general sales tax. Secretary of State business search |
No sales tax: no resale/tax document needed. Link is the business entity search. The site blocks automated checks; it opens normally in a browser. |
| Nebraska (NE) |
No free public lookup. Sales & use tax page (paid monthly permit report) |
No public online lookup. |
| Nevada (NV) |
Nevada Tax online services: reseller permit search |
Online lookup. |
| New Hampshire (NH) |
No general sales tax. QuickStart business inquiry |
No sales tax: no resale/tax document needed. Link is the business entity search. The site blocks automated checks; it opens normally in a browser. |
| New Jersey (NJ) |
Business Registration Certificate verification |
Online lookup. |
| New Mexico (NM) |
TAP: verify an NTTC |
Online lookup. |
| New York (NY) |
Sales tax vendor registration lookup |
Online lookup. |
| North Carolina (NC) |
Registry of Sales and Use Tax Numbers |
Online lookup. |
| North Dakota (ND) |
ND TAP: "Sales & Use Permit Inquiry" |
Online lookup. |
| Ohio (OH) |
Active vendor's license list (Department of Taxation) |
Online lookup. |
| Oklahoma (OK) |
OkTAP: verify a sales tax permit |
Online lookup. |
| Oregon (OR) |
No sales tax. Secretary of State business registry search |
No sales tax: no resale/tax document needed. Link is the business entity search. |
| Pennsylvania (PA) |
PA Open Data: active sales tax licenses (Revenue-recommended) |
Online lookup. |
| Rhode Island (RI) |
No public lookup. Sales & use tax page; verify at 401-574-8938 |
No public online lookup. |
| South Carolina (SC) |
Retail license number verification |
Online lookup. |
| South Dakota (SD) |
No public lookup. Sales & use tax page; call 1-800-829-9188 |
No public online lookup. |
| Tennessee (TN) |
Sales and use tax certificate verification (TNTAP) |
Online lookup. |
| Texas (TX) |
Sales taxpayer search (permit status) |
Online lookup. |
| Utah (UT) |
No public lookup. Sales & use tax FAQ; contact the Tax Commission |
No public online lookup. |
| Vermont (VT) |
No public lookup. Business Tax section confirms a license on request |
No public online lookup. |
| Virginia (VA) |
No public lookup. Retail sales and use tax page; call 804-367-8037 |
No public online lookup. |
| Washington (WA) |
Reseller permit lookup (Business Lookup) |
Online lookup. |
| West Virginia (WV) |
No public tax lookup. Secretary of State business entity search |
No public online lookup. |
| Wisconsin (WI) |
No public lookup. Seller's permit FAQ |
No public online lookup. |
| Wyoming (WY) |
No public tax lookup. Secretary of State business entity search |
No public online lookup. |
