Tax Invoice Requests for WooCommerce

Tax Invoice Requests for WooCommerce adds a practical self-service invoice request workflow to WooCommerce stores. Customers can request a tax invoice directly from an eligible order, enter their company or tax details, receive a PDF invoice by email, and download the invoice again from their account. This plugin is built for stores that need to collect VAT, GST, ABN, TRN, business tax ID, or other regional tax registration details after checkout without handling every invoice request manually through support tickets. Instead of asking customers to email billing details to your team, the plugin adds a tax invoice request form to WooCommerce order pages. After a valid request is submitted, the plugin saves the invoice details to the order, generates a PDF tax invoice, attaches it to a WooCommerce email, and protects the PDF behind permission checks. Why use this WooCommerce tax invoice plugin?

• Reduce manual tax invoice requests from customers.
• Let customers submit tax ID, VAT, GST, ABN, TRN, billing address, and invoice email details from the order page.
• Generate PDF tax invoices from WooCommerce order data.
• Keep invoice PDFs available for future download.
• Give store managers invoice details and PDF actions inside the WooCommerce order admin screen.
• Support both logged-in customers and guest customers with valid WooCommerce order keys.

Key features

• Customer tax invoice request form on WooCommerce order details pages.
• Support for guest invoice requests from the order received page when a valid order key is present.
• Automatic invoice field prefill from billing details and previously saved customer invoice details.
• Custom tax ID label field for VAT number, GST number, ABN, TRN, Tax ID, or local registration labels.
• Automatic PDF tax invoice generation after a valid request.
• Dedicated WooCommerce customer email with the generated PDF invoice attached.
• Protected PDF invoice download links for customers, guests with a valid order key, and store managers.
• WooCommerce order admin metabox showing invoice status, invoice number, tax ID, invoice email, billing address, and notes.
• Admin actions to regenerate the PDF invoice and resend the invoice email.
• Configurable seller legal name, seller tax ID label, seller tax ID number, seller address, and seller email.
• Configurable invoice number prefix and next invoice number.
• Safer invoice number reservation to reduce duplicate invoice numbers during concurrent requests.
• Optional tax rate column in the generated PDF invoice.
• Optional tax summary grouped by tax rate.
• Custom footer or legal note for the PDF invoice.
• Optional tax invoice request link in WooCommerce customer order emails.
• Compatible with WooCommerce High-Performance Order Storage (HPOS) order screens.

Customer invoice workflow

1. The customer opens an eligible WooCommerce order from My Account > Orders, or opens the order received page with a valid order key.
2. The customer clicks Request tax invoice.
3. A modal form opens with prefilled billing and invoice details when available.
4. The customer enters the company or customer name, tax ID label, tax ID number, country or region, billing address, invoice email, and optional invoice note.
5. The plugin validates the request with a WordPress nonce and WooCommerce order access checks.
6. The invoice details are saved to the order.
7. A PDF tax invoice is generated automatically.
8. The customer receives an email with the PDF invoice attached.
9. The customer can download the PDF invoice again from the order page when permitted.

Store manager workflow Store managers and administrators can review tax invoice requests from the WooCommerce order edit screen. The order metabox shows the invoice status, invoice number, company or customer name, tax ID, country or region, invoice email, billing address, invoice note, and a protected PDF download button when a valid PDF exists. The same metabox includes admin actions to:

• Regenerate the tax invoice PDF.
• Resend the tax invoice email to the invoice recipient.

Both admin actions use nonce checks and WooCommerce order management capability checks. PDF tax invoice details Generated PDF invoices can include:

• Invoice title.
• Invoice number and invoice date.
• WooCommerce order number and order date.
• Currency and payment method.
• Seller legal business details.
• Customer invoice details.
• Order items, quantities, subtotals, tax amounts, and totals.
• Optional tax rate column for line items.
• Optional tax summary grouped by tax rate.
• Customer invoice note.
• Store-configured footer or legal note.

Email behavior When a PDF invoice is generated, the plugin sends a dedicated WooCommerce customer email with the PDF attached. The email includes the WooCommerce order number and invoice number when available. Store managers can also enable a tax invoice request link in supported customer order emails. When enabled, the email includes a Request tax invoice button that sends customers to the order page and opens the request form. Invoice numbering Invoices use the configured invoice number prefix and the next invoice number setting. The default format is: PREFIX-YEAR-000001 Example: TAX-2026-000001 Existing invoice numbers are preserved when invoice settings change or when an invoice PDF is regenerated. Security and access control The plugin is designed to keep invoice access controlled through WordPress and WooCommerce permissions. Security-related behavior includes:

• WordPress nonce validation for customer invoice requests.
• WooCommerce order ownership checks for logged-in customers.
• Valid order key checks for guest customers.
• WooCommerce order management capability checks for store managers.
• Protected download handler for PDF invoices.
• Randomized PDF file names to make direct guessing impractical.
• Stricter invoice file path validation for downloads, email attachments, and admin cleanup.
• Direct-access protection rules for the invoice upload folder when supported by the server.
• Dompdf remote fetching disabled by default for generated invoice PDFs.

Plugin settings Go to: WooCommerce > Settings > Tax > Tax invoice Settings are grouped into:

• General
• Seller details
• Invoice numbering
• PDF display
• Customer emails

1.0.1 (June 23, 2026)

• Hardened PDF storage with randomized file names and stricter direct-access protection.
• Added invoice file path validation for downloads, email attachments, and admin cleanup.
• Added safer invoice number reservation to reduce duplicate numbers during concurrent requests.
• Fixed guest invoice download links on order received pages by preserving valid order keys.
• Disabled remote fetching in Dompdf and handled PDF generation exceptions gracefully.
• Improved tax summary calculation to use order item, fee, and shipping tax records.
• Added admin order actions to regenerate invoice PDFs and resend invoice emails.
• Improved admin action buttons in the tax invoice request metabox.

1.0.0 (May 23, 2026)

• Initial release.
• Added customer tax invoice request form.
• Added automatic PDF tax invoice generation.
• Added customer email with PDF attachment.
• Added protected PDF download handler.
• Added WooCommerce order admin metabox.
• Added configurable seller details, invoice numbering, PDF display, allowed statuses, and customer email request link.