If you are a tax exempt organization and do not have a Staples Tax Exempt Customer Number, please follow the steps below.Step 1: Fax your tax certificate to Staples at 1-888-823-8503.Step 2: On a cover sheet, please include your telephone number and order number if applicable. Please do not write on your tax certificate.Step 3: Your order will be taxed and a refund generated as soon as our Tax Department verifies your tax exempt information