// The transformation logic const lexofficeInvoice = voucherDate: formatDate(crmData.timestamp), address: name: crmData.client.companyName, street: crmData.client.street, // Lexoffice requires specific country codes (ISO 3166-1 alpha-2) countryCode: "DE" , lineItems: crmData.items.map(item => ( type: "custom", name: item.description, quantity: item.qty, unitName: "Stück", unitPrice: netAmount: item.price / 1.19, // Calculating net from gross grossAmount: item.price, taxRatePercentage: 19
Then, the moment of truth.
Retrieve or update product and service details, including net/gross pricing and specific German tax rates (currently 0%, 7%, and 19%). Technical Setup and Authentication
The API is strictly hard-coded for German tax laws and currency (Euro), making it unsuitable for use in other countries even if they use the Euro. Automation and Integration Tools lexoffice api
Features an Independent Publisher connector for Power Automate and Power Apps.
: Detailed endpoint descriptions and samples are available at the official Lexware Developer Portal . Popular Integrations Many teams use no-code or low-code platforms to connect Lexware Office with other business tools: 11 sites Lexware API Documentation This documentation describes the set-up process, where to start with the API and the currently available endpoints. It moreover pr... Lexware API Documentation Lexware-Office Add-On-Connection / API Integration - Synesty What can I do with the Steps contained in Lexware-Office? * create Customer data. * create Orders. * create Records. * read Custom... Synesty Sysix/lexoffice-php-api - GitHub 26 Oct 2025 —
: For creating and managing customer and supplier data . It moreover pr
He started where all modern APIs start: Authentication. Elias knew Lexoffice was strict about security, utilizing OAuth 2.0.
"type": "custom", "name": "Consulting", "quantity": 10, "unitName": "hour", "unitPrice": "currency": "EUR", "netAmount": 100.00, "taxRatePercentage": 19
The Public API is generally restricted to the XL plan . bidirectional data sync (e.g.
4:45 AM. The office was silent. The rain had stopped.
| Approach | Best for | |----------|----------| | | Real-time, automated, bidirectional data sync (e.g., custom store → invoices). | | CSV import | One-time or periodic bulk uploads (e.g., migrating old invoices). | | Zapier / Make | No-code integrations with 1000+ apps. | | lexoffice add-ons | Pre-built connectors for Shopify, WooCommerce, DATEV, etc. |
Integration requires a clear understanding of the gateway and security protocols.