Related Information
Question: How to verify a sales tax license or tax exemption certificate.
The Department of Revenue offers a 24-hour, automated service for those wanting to verify a Colorado sales tax license or sales tax exemption certificate for a specific business or organization. You can determine whether the license of exemption certificate is valid through Revenue Online Under "Other Services", choose Verify a Sales Tax License. You must know the sales tax account number or exemption certificate number as assigned by the Department of Revenue.

Back to Common Questions

Back to Taxation Web site