Paperwork Tax Exempt Certs helps B2B Shopify merchants collect, read, and review resale or tax exemption certificates. Upload a certificate, review extracted business, state, expiry, and tax ID details, then approve customer tax status in Shopify. This free app is built by Paperwork.to, a document AI platform for finance, tax, compliance, and risk workflows, including invoices, business due diligence, bank statements, and document fraud checks.