sevDesk API

sevDesk in your operational cycle – not as accounting with double invoice entry.


Connect sevDesk – Customized and Seamless

sevDesk is a cloud-based accounting software from Germany – specifically designed for small and mid-market companies. Businesses use sevDesk for invoice generation, receipt capture, VAT preliminary reporting, and digital exchange with their tax consultant. For operationally complex companies, sevDesk is relevant because financial data should not remain isolated in the accounting system – but rather flow into the overall system as a basis for controlling, liquidity management, and operational decisions. We integrate sevDesk into custom corporate software. No pre-made standard connection, no plug-in with limitations – but a tailored connection that fits your processes and system exactly.


What We Connect

Integration Options
🔄Automatically synchronize invoices, contacts, and receipts between the system and sevDesk
📊Map revenues, open items, and liquidity data in central reporting
📄Automatically generate invoices from orders and transfer them to sevDesk
Event-driven workflows – e.g., update status upon payment receipt, trigger reminders for overdue invoices
🔗Bidirectional data exchange between sevDesk, ERP, order management, and other systems

How the Integration Works

We work directly with the sevDesk REST API v2. The connection is developed as a fixed part of your Operating System – no third-party middleware, no workaround. Here’s what that means:

🏗️Customized connection – built for your processes, not for the average
🔄Automatic data flow – no manual invoice exports or receipt transfers
🗄️One data foundation – sevDesk financial data flows into your central system
🛡️Secure and GDPR-compliant – German hosting, GoBD-compliant, and documented

Typical Use Case

A project service provider with 40 employees creates 120 invoices monthly. Accounting runs through sevDesk, while business operations rely on an internal system. Invoices are manually transferred. Incoming payments are checked by accounting in sevDesk – no one in the operational system knows whether payment has been made. Dunning runs via Excel.

Through integration, invoices are automatically generated in both systems. Incoming payments update order status in real-time. Overdue invoices trigger the next reminder level. Management sees revenue, open receivables, and liquidity in the central dashboard – updated daily. sevDesk remains the accounting system – but financial data is no longer siloed.


Part of Your Operating System

sevDesk is an accessible, GoBD-compliant accounting solution. However, when used in isolation, a gap emerges between operational business and financial data. Only as part of an integrated system does sevDesk realize its full benefit – when postings occur automatically and financial data becomes available when needed for decision-making. We develop AI-powered Operating Systems for operationally complex companies. The sevDesk integration is a component of that.