Invoicing Integration for Lexware and WooCommerce
Invoicing Integration for Lexware and WooCommerce connects your shop to Lexware Office (formerly lexoffice). Create real Lexware invoices from WooCommerce orders and keep customer contacts in sync.
Key Features (FREE)
- Create Lexware invoices from orders — one click on the order edit screen
- Contact sync — customers are found or created in Lexware with billing address and USt-IdNr
- USt-IdNr at checkout — optional VAT ID field; works with popular EU VAT plugins without duplicates
- Tax options — net / gross / tax-free, Kleinunternehmer, and common German rates (0 %, 7 %, 19 %)
- EU distance selling — optional settings for cross-border EU private customers outside Germany
- Draft or finalized — choose whether invoices are created as draft or finalized in Lexware
- PDF download — in the admin and for customers under My Account
- Open in Lexware — jump straight to the invoice in Lexware Office
- Connection test — check that your Lexware API key works
- Logging — useful logs for troubleshooting (API keys are hidden)
- Works with classic checkout and WooCommerce block checkout
- Compatible with modern WooCommerce order storage
Language, print layout, payment terms, introduction/remark texts, EU B2B reverse charge, automation, credit notes, email PDFs, and bulk actions are available in the PRO version (shown as upgrade teasers in FREE).
PRO Features
Upgrade to the Pro version for:
- Document options — language (German/English), print layout, payment terms, introduction and remark texts
- EU B2B reverse charge — for company buyers in the EU with a USt-IdNr
- Automatic invoice creation when an order reaches a status you choose
- Credit notes — create them manually or automatically when you refund an order
- Email invoice / credit note PDFs to the customer
- Bulk actions — create invoices or credit notes for many orders at once
- Bulk PDF download as a ZIP file
- Diagnostics export for support
- License management and automatic updates
- Priority email support
Requirements
- WordPress 5.8 or higher
- WooCommerce 5.0 or higher
- PHP 7.4 or higher
- Active Lexware Office account with Public API access
- Shop currency EUR (Lexware currently supports EUR only)
External services
This plugin uses the Lexware Public API (Lexware Office) to create invoices and manage contacts.
What is Lexware Office?
Lexware Office is a German cloud accounting and invoicing platform. This plugin uses their official Public API to:
- Connect with your API key
- Create and update customer contacts
- Create invoices (draft or finalized)
- Download invoice PDFs
- Check the connection from the settings page
- (PRO) Create credit notes and use extra document options
API address: https://api.lexware.io
What data is sent and when?
Data is sent to Lexware (https://api.lexware.io) in these situations:
When you create an invoice (or when PRO automation creates one):
- Customer billing details: name, company, USt-IdNr, email, phone, address
- Order details: products, quantities, amounts, tax rates, shipping and fees, invoice date; optional introduction/remark (PRO)
When the plugin connects to Lexware (settings or as needed):
- Your Lexware Public API key
- Requests to load profile, contacts, invoices, and PDF files
- (PRO) Requests for print layouts and payment terms when you configure document options
In FREE, nothing is sent automatically. The free plugin talks to Lexware when:
- You create an invoice from the order screen
- You click Test Connection
- You download an invoice PDF (admin or My Account)
With PRO automation, invoices or credit notes may also be created when order status changes or refunds are issued, according to your settings.
Rate limits
Lexware limits how many requests you can send in a short time. The plugin respects that and retries temporary errors where it makes sense (mainly PRO automation).
Service provider information
- Service name: Lexware Public API (Lexware Office)
- Service URL: https://www.lexware.de/
- Application: https://app.lexware.de/
- API documentation: https://developers.lexware.io/docs/
- Plugin documentation: https://devikit.de/docs/lexware-woocommerce-pro/
- API key management: https://app.lexware.de/addons/public-api
- Public API terms: https://agb.lexware.de/lexware-office/public-api-lizenz–und-nutzungsbedingungen
- Privacy Policy: https://www.lexware.de/datenschutz/
By using this plugin, you acknowledge that customer and order data will be transmitted to Lexware for invoice generation. You are responsible for complying with applicable data protection laws (including GDPR) and informing your customers.