Skip to main content

​
Overview

Exemption certificates are legal documents that allow specific buyers to purchase goods or services without paying sales tax. Merchants can use Commenda to create and manage exemption certificates for their customers.

​
How to create an exemption certificate

To create an exemption certificate, follow these steps:
  1. Create a Customer Record: Use the customer endpoint to create a customer record, which will be linked to the exemption certificate. Save the customer ID from the response. Learn more about customer creation here.
  2. Upload the Certificate File: Use the file endpoint to upload the exemption certificate document and save the returned file ID. Details on how to use the file endpoint can be found here.
  3. Link Customer and File: Use the POST /exemption-certificates endpoint to link the customer and the uploaded file, thereby creating the exemption certificate.

​
Certificate types

  1. Single state: This type of exemption certificate is valid only within a single state. Each state has specific rules regarding which entities can claim exemptions and the process for doing so.
  2. SST: This is a Streamlined Sales Tax exemption certificate. It may be recognized in multiple states, including any states that are members of the Streamlined Sales Tax Governing Board.
  3. MTC: This is a Multistate Tax Commission exemption certificate. It may be recognized in multiple states, including any of the 36 states which are are part of the Multistate Tax Commission.

​
Certificate review status

Exemption certificates include a verification_status field so Commenda can surface the review state of a certificate. When a certificate is created with a file_id, its initial status is VERIFICATION_PENDING. Certificates created without a file are marked NOT_READY until a file is attached. Tax calculation is based on active jurisdiction exemptions, effective dates, and expiration settings. Do not use verification_status alone to predict tax treatment. If Commenda marks a certificate VERIFICATION_FAILED, the certificate’s jurisdiction exemptions are deactivated. When Commenda updates a certificate to VERIFICATION_SUCCESS or VERIFICATION_FAILED, the corresponding exemption certificate webhook is sent. For more details, see exemption certificate webhooks.