If you are a Tax Exempt customer, please upload your tax-exempt certificate here. Your tax-exempt status must be reviewed and approved before placing an order in order for the order to be tax-exempt. If you submit your exemption request but place an order before approval, sales tax will be charged, and refunds cannot be guaranteed. Approval confirmation will be sent via email. If you are not tax-exempt and self-assess and pay sales tax to your state directly, please contact orders@pro-analytics.net to prevent sales tax duplication.