You can upload your tax-exempt certificate through our secure Avalara portal at the account level. Go to https://app.certexpress.com/?c=4e41746a4a3864514c5076496f66367435542f4a:7d31c70ba974271d8ad335d1aef6eeac, accept the Terms & Conditions, then click the ‘+’ sign to add an exemption certificate. From there, follow the prompts to upload your certificate. Once uploaded, you’ll receive a confirmation message. For assistance, contact us at [email protected] or 866-366-7428.