Skip to main content
Avalara Help Center

Why didn't my single use exemption certificate apply?


I used a single use exemption certificate and the certificate did not apply to the invoice


Avalara AvaTax


  • Make sure the PO number used on the invoice matches what is entered in the PO field of the exemption certificate
    • Only the last PO number added to the single use certificate is valid-- which is to say the first PO number in the list on the certificate is the PO number that will be used to apply the certificate.
  • The effective date of the exemption certificate must be on or before the date of the invoice.  




  • Was this article helpful?