Description
This plugin provides an integration between WooCommerce and the inFakt accounting system, allowing automatic (PRO version) and manual invoice generation based on WooCommerce orders.
Features (Free version)
- Manual invoice generation from order edit screen.
- Customer data synchronization (create/update in inFakt).
- Storing invoice number in order.
- Invoice link preview.
- API communication logs.
- Advanced VAT rate mapping.
- Flat rate tax support.
Pro Version
A Pro version is also available with additional features:
- Automatic invoice generation after status change.
- Proforma invoice support.
- Email notifications with PDF attachments.
- Bulk operations on orders list – generate invoices/proformas and send emails for multiple orders at once.
- KSeF integration via InFakt – manual and automatic sending to Polish National e-Invoice System.
- WooCommerce Subscriptions compatibility.
- Technical support.
External services
This plugin relies on the inFakt API, a third-party accounting service, to generate invoices and manage customer data.
What is inFakt API?
inFakt is a Polish online accounting system that provides invoicing and accounting services for businesses. This plugin uses their official API to:
* Create and manage customers (clients) in your inFakt account.
* Generate invoices and proforma invoices (PRO version).
* Retrieve bank accounts, VAT exemption reasons, and other accounting data from your inFakt account.
* Download invoice PDFs.
* Send invoices to KSeF (Polish National e-Invoice System) via InFakt (PRO version).
What data is sent and when?
The plugin sends the following data to inFakt API (https://api.infakt.pl/v3) in these situations:
When you click “Create Invoice” or when automatic invoice generation is triggered (PRO version):
* Customer billing information: first name, last name, company name, VAT number (NIP), email, phone number, billing address (street, city, postal code, country).
* Order information: order items (product names, quantities, prices, VAT rates), shipping details, payment method, order date, order total.
When the plugin connects to inFakt API (on settings page load or when needed):
* Your inFakt API key (for authentication).
* Requests to retrieve your account settings: bank accounts, VAT exemption reasons, income categories, flat rate tax options.
No data is sent automatically without your action. The plugin only communicates with inFakt API when:
* You manually create an invoice from the order screen.
* You enable automatic invoice generation in PRO version.
* You open the plugin settings page (to load account configuration).
Service provider information
- Service name: inFakt API
- Service URL: https://www.infakt.pl/
- API documentation: https://www.infakt.pl/api/
- Terms of Service: https://www.infakt.pl/regulamin/
- Privacy Policy: https://www.infakt.pl/polityka-prywatnosci/
By using this plugin, you acknowledge that customer and order data will be transmitted to inFakt for invoice generation purposes. You are responsible for ensuring compliance with applicable data protection laws (including GDPR) and informing your customers about this data processing.
Screenshots

Invoice creation panel on order edit screen – manually generate invoices from WooCommerce orders. 
API Connection settings – connect your inFakt account with API key and test connection. 
Invoicing settings (part 1) 
Invoicing settings (part 2) 
Shop settings 
Automations settings (part 1) (PRO) 
Automations settings (part 2) (PRO) 
Advanced settings – plugin logs, debugging options and troubleshooting tools.
Installation
- Upload
invoicing-integration-for-infakt-and-woocommercefolder to/wp-content/plugins/directory. - Activate the plugin in WordPress Plugins menu.
- Go to WooCommerce -> InFakt and enter your API key.
Reviews
Contributors & Developers
“Invoicing Integration for inFakt and WooCommerce” is open source software. The following people have contributed to this plugin.
Contributors“Invoicing Integration for inFakt and WooCommerce” has been translated into 1 locale. Thank you to the translators for their contributions.
Translate “Invoicing Integration for inFakt and WooCommerce” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.0.8
- Fixed Pro upgrade banner dismiss functionality (remind later and don’t remind buttons).
1.0.7
- Small fixes.
1.0.6
- Fixed default checkbox label translation on first installation.
1.0.5
- Added plugin screenshots.
- Updated readme descriptions.
1.0.4
- Added Plugin URI for WordPress.org integration.
1.0.3
- Removed “Including product variants in invoices” from Pro features list.
1.0.2
- Fixed Pro banner title.
1.0.1
- Added promotional banner for Pro version.
- Updated feature list.
1.0.0
- First public release.