Invoicing with InvoiceXpress for WooCommerce – Free


“Invoicing with InvoiceXpress for WooCommerce – Free” allows you to easily create legal invoices for your WooCommerce orders using InvoiceXpress, directly on your store dashboard, and send them via email to the client.

InvoiceXpress is an online invoicing software approved by the Portuguese Tax and Customs Authority, which can be accessed from anywhere via a browser. Although it was developed with the Portuguese market in mind, it can also be used by store owners from countries worldwide. You can sign up for a 30-day free trial here.


  • Invoices and Simplified invoices;
  • Manual issuing of documents;
  • Send documents via email;
  • Custom emails by document type;
  • VAT field on the checkout;
  • Issue VAT exempt documents;
  • Very limited technical support (bug fixing only);

Pro version features:

In addition to all you can do with the free plugin, the paid version offers you a number of additional features.

  • Technical support;
  • Receipts, Invoices-receipt, Credit notes, Quotes, Proformas, Delivery notes, and Return delivery notes;
  • Automatic issuing of documents, on configurable order status;
  • Leave documents as Draft on InvoiceXpress;
  • Documents cancelation;
  • Issue documents in Portuguese, English or Spanish;
  • Choose default documents invoicing sequence;
  • Choose order specific documents invoicing sequence;
  • Choose default unit of measurement: Product or Service;
  • WooCommerce EU VAT Assistant by Aelia integration for EU VAT exemption on B2B;
  • EU VAT Number by WooCommerce (experimental) integration for EU VAT exemption on B2B;
  • Default warehouse (load site) address and licence plate for delivery notes;
  • Issuance of guides without values;
  • Send Delivery notes directly to the warehouse or the dropshipping supplier;
  • WooCommerce order item meta on the InvoiceXpress item description;
  • Prevent issuing of incorrect documents if non-standard coupons are used;
  • WPML/WooCommerce Multilingual integration for multilingual stores;
  • Developer license for up to 10 WooCommerce stores;
  • Extensions

Check out all the Pro features on the plugin website


  • Use the included automatic install feature on your WordPress admin panel and search for “Invoicing InvoiceXpress WooCommerce”.
  • Go to “WooCoomerce > InvoiceXpress Free” and fill in the subdomain and API key provided by InvoiceXpress on their dashboard (Account > Integrations > API).
  • Setup the WooCommerce taxes according to your InvoiceXpress taxes settings – check the documentation.


Can you provide free support for this plugin?

Probably not, unless it’s a very specific issue, under our consideration.
We welcome bug reports and will do anything in our power to fix them for you, but it’s impossible to provide free support on such complex software like an invoicing plugin is.

This is also why our Pro version has a yearly subscription instead of a one-time fee. The Pro plugin will not stop working if you decide not to renew your subscription, but you’ll stop receiving automatic updates and included technical support. That’s the only way we can ensure continued development and keep up to date with WordPress and WooCommerce changes over time.

Can I contribute with a translation?

Sure. Go to GlotPress and help us out.


July 2, 2019
Depois de ter tentado integração WooCommerce com outro ERP (com dois dias cheios de problemas), decidi ligar a loja ao InvoiceXpress com este plugin e em muito ponto tempo tudo ficou a funcionar. Praticamente nem precisei de ajuda tão intuitivo é o plugin, mas quis ter a certeza de estava tudo bem configurado e o suporte foi excelente! Plugin muito bem feito; Facilidade de uso; Suporte Top
March 2, 2019
Depois de ter instalado a versão Free, deu para perceber que é um plugin fiável, bem pensado e programado e que a versão PRO poderia fazer o que pretendia. Contactei o suporte para tirar dúvidas e depois de ter recebido uma excelente orientação, decidi de imediato adquirir a versão PRO que me permitiu resolver tudo - mesmo tudo - o que pretendia, na informação a enviar para o programa de faturação, pois até fizeram uma atualização ao plugin para incluir algumas informações de produtos que queria que aparecessem nas faturas. Excelente plugin que ajuda imenso e aconselho a todos. Suporte fantástico!
January 29, 2019
Really well made and complete plugin with lots of features, especially the pro version. Worth the money.
January 18, 2019
Plugin muito intuitivo e rápido de configurar. Para quem pretende fazer uma rápida e eficaz integração entre a loja online e o software de faturação, recomendo claramente este plugin! Sempre que precisei de apoio, o serviço de assistência ao Cliente da Webdados teve total disponibilidade para me ajudar e superou as minhas espectativas. O serviço de assistência ao Cliente é excelente. Continuem com o bom trabalho!
Read all 9 reviews

Contributors & Developers

“Invoicing with InvoiceXpress for WooCommerce – Free” is open source software. The following people have contributed to this plugin.


“Invoicing with InvoiceXpress for WooCommerce – Free” has been translated into 1 locale. Thank you to the translators for their contributions.

Translate “Invoicing with InvoiceXpress for WooCommerce – Free” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Plugin version on scripts and styles
  • New invoicexpress_woocommerce_document_item, invoicexpress_woocommerce_document_shipping and invoicexpress_woocommerce_document_fee developer filters to allow manipulation or exclusion of each document line
  • Better feedback when the VAT number is missing and is required


  • New option to set the default unit of measurement: Product or Service (Pro version)
  • New invoicexpress_woocommerce_document_item_unit, invoicexpress_woocommerce_document_shipping_unit and invoicexpress_woocommerce_document_fee_unit filters to allow developers to change each document item unit of measurement
  • WordPress 4.9 minimum requirement
  • PHP 5.6 minimum requirement
  • Translations update
  • Tested with WooCommerce 3.7.0-beta.1


  • Several changes on the licensing so that extensions can use it (Pro version)
  • Third parties can now prevent the issuing of documents when using the invoicexpress_woocommerce_{$type}_data filters
  • Fix on the plugin version update on the database
  • Translations update
  • Tested with WordPress 5.2.3-alpha-45552


  • Try to avoid issuing duplicate automatic documents when PayPal has both IPN and PDT notifications active (Pro version)
  • Fix PHP notice when creating new orders on wp-admin and automatic invoices or transport guides are activated (Pro version)
  • Better tax exemption descriptions
  • Better debugging
  • Tested with WooCommerce 3.6.4 and WordPress 5.2.2-RC1


  • Experimental partial VAT exemption
  • Prevent automatic invoicing of orders without values, unless explicitly activated on the options (Pro version)
  • Better error handling and feedback from the InvoiceXpress API
  • Fix VAT exemption error for documents and items with no value
  • Initial implementation of generic handling actions so that they can be logged by an external debug plugin
  • Composer update and plugin initialization refactoring for better PHP 7.3 compatibility
  • Tested with WooCommerce 3.6.3 and WordPress 5.2.1


  • Bugfix on Bulk Invoices
  • Bugfix on VAT on Shipping and Fees
  • Tested with WooCommerce 3.6.2


  • Use wp_remote_get instead of fopen
  • Small bugfix on a string
  • EU VAT Number by WooCommerce support (Pro version) for EU VAT exemption on B2B
  • Tested with WooCommerce 3.6.0 (RC 1)

  • Fix product description on some multilingual configurations
  • Shipping and fee name now have a prefix
  • Tested with WooCommerce 3.6.0 (beta 1) and WordPress 5.1.1

  • Shot VAT field on the order admin screen even when “YITH WooCommerce Checkout Manager” is in use
  • Do not show tax exemption field on the order admin screen when the order total is zero
  • Code cleanup

  • Bugfix when editing the VAT number on My Account – Billing Address
  • Tested with WooCommerce 3.5.5 and WordPress 5.1

  • Code cleanup

  • Use get_order_number() instead of get_id() for documents reference, for compatibility with plugins that manipulate the order number
  • New function to set the item description for all the document types
  • New invoicexpress_woocommerce_document_item_title filter

  • InvoiceXpress links fix


  • New method and invoicexpress_woocommerce_prevent_document_issuing filter that allows developers to prevent the document issuing based on the order details


  • Small tweaks
  • Tested with WooCommerce 3.5.4


  • Bugfix on the default tax exemption motive for Portuguese businesses exempt from taxes


  • New filter on the documents filename: invoicexpress_woocommerce_document_filename
  • Small adjustment on default documents filename
  • Bugfix on Invoices-receipt email (Pro version)
  • Tested with WooCommerce 3.5.3 and WordPress 5.0.3


  • Future-proofing by using InvoiceXpress API v2 in JSON
  • Document language now based on an option instead of client country (on the Pro version, the Free version always issues documents in Portuguese)
  • Caching document sequences for a small boost in performance
  • Complete refactoring of ClientChecker class and the way the client is identified on InvoiceXpress
  • Code review and elimination of duplicate code on all the controllers
  • Fix VAT number validation on the checkout and when issuing documents (both with our field and WooCommerce EU VAT Assistant on the Pro version)
  • Translations update
  • Tested with WordPress 5.0.2


  • Use WooCommerce CRUD functions only to get and set metadata from and to orders
  • Fix the VAT number, document sequence and delivery note fields on the order edit screen
  • Bulk invoice tax exemption bugfix
  • Fix on the JavaScript enqueues
  • Code review
  • New filter to disable WooCommerce EU VAT Assistant field status feedback on the checkout (Pro version)
  • Fix sending Delivery notes directly to the warehouse or the dropshipping supplier (Pro version)
  • Translations update

  • Bugfix when upgrading database version could cause a fatal error on some situations

  • Version number fix


  • WPML initial support (Pro version)
  • Tweak on the document emails’ placeholder replacements
  • Store InvoiceXpress document sequence number on order meta and show it on notifications and order notes
  • Fix Invoice-receipts and Quotes meta when storing document id and pdf link (Pro version)
  • Fix Receipts notifications (Pro version)
  • Fix Delivery and Return delivery notes translations (Pro version)
  • Translations update


  • Update translations
  • Send Delivery notes directly to the warehouse or the dropshipping supplier (Pro version)
  • Bugfix on error emails for Automatic invoices (Pro version)


  • Add plugin version to the settings page title
  • Propagate the invoicexpress_woocommerce_after_document_issue and invoicexpress_woocommerce_after_document_finish developer filters to all documents
  • Fix some translations


  • Code review
  • Associate same order Invoices to Guides and vice versa on InvoiceXpress
  • Translations update
  • Refactor possible status and not recommended status for automatic documents (Pro version)
  • WooCommerce EU VAT Assistant link update (Pro version)
  • Fix automatic documents when a custom order status exist (Pro version)
  • Fix Transport guide loaded time for automatic documents (Pro version)
  • Fix automatic receipts notifications for shop admins (Pro version)


  • Update translations
  • Fix automatic documents notifications for shop admins (Pro version)
  • Several Transport guides fixes (Pro version)
  • Fix translation loading (Pro version)
  • Tested with WordPress 5.0.1


  • Fix textdomain so that the Free version uses the GlotPress


  • Fix fatal error on specific situations when updating plugin database version


  • Under new management.
  • Changed the plugin name.
  • Extensive code overhaul and bug fixing (can contain breaking changes).
  • WooCommerce 3.x and PHP 7.x compatibility reviewed.
  • Removed WooCommerce backward compatibility (below 3.x).
  • Applied WordPress Coding Standards.
  • Refactored the settings screen.
  • Added email placeholders.
  • Refactored email invoice fields.
  • Option not to change order status when issuing documents (by default).
  • Removed check for WooCommerce deprecated functions.
  • Requirements check for allow_url_fopen and curl.
  • Developer hooks (actions and filters).
  • And much more…


  • NEW Added document observations field.
  • NEW Now able to select customer or company as documents entity.


  • NEW FEATURE added option to use product ID or SKU on document code section.
  • Email attachment bug fixed.


  • VAT is now sent via order emails.
  • Bug-fixes.


  • Variations have different product description os documents.
  • Products with SKU show their SKU instead of ID.
  • Bug-fixes and tweaks.


  • Added option to download again created documents.
  • Small bug fixes.
  • Moved uploads folder to wordpress default.
  • Changed error messages.


  • Added compatibility with WooCommerce EU VAT Assistant plugin.


  • Product variations now show up on invoice item description.
  • Small bug fixes.


  • Fixed: it is now possible to create documents with different tax rate items.
  • Small bug fixes.


  • Fixed: it is now possible to create documents without VAT number
  • Fixed: VAT format is validated in front-end to avoid errors.
  • Bugfix of some features.


  • First release