Skip to content

How To Refund Sales Tax from Your Order

Our e-commerce partner (FastSpring) charges sales tax when your order is processed.

If you placed an order with us as a non-profit, academic or government institution, you can receive a refund of the sales tax paid.

Go to and provide the following from your purchase receipt:
  • Order reference ID
  • Date of purchase
  • Name and email address
  • Purchase website is

You will be issued a refund of your sales tax within a few hours of receiving your request.

Feedback and Knowledge Base