Notes on modern payables.
Practical writing on accounts payable automation, DATEV, GoBD, and e-invoicing, for finance teams who want to capture, code, and close faster.
Steuerberater and DATEV: why the accountant channel decides German finance software
Most German SMEs do not pick their own accounting stack. Their Steuerberater does. Here is how Cortena fits that channel for payables, receivables and e-invoices without competing for the client relationship.
AI invoice processing for DATEV in 2026: what actually works
A practical guide to AI invoice processing with DATEV: capture, SKR03/SKR04 coding, approvals, e-invoices, and GoBD-aligned posting without CSV exports.
AI invoice processing for Exact Online: a complete 2026 guide
How AI invoice processing for Exact Online works in practice: capture, coding, approvals, booking proposals, and when it beats Scan & Herken.
Why we built Cortena: 400 conversations, one pattern, and the problem everyone accepted as normal
Before writing a line of code, we spent a year talking to finance leaders across Europe. The answer they kept giving us was the same.
AI invoice reconciliation: how agents are closing the loop with live bank data
Cortena now connects to 1,000+ European banks and reconciles 5,000+ invoices a month at close to 90% accuracy via agent-based workflows.
Why finance automation should start upstream, not downstream
Finance teams do not struggle for lack of dashboards. They struggle because upstream work, invoices, approvals, and reconciliations, is still manual.
Why most finance AI breaks on real data, and what agent-based reasoning fixes
Most finance AI works in demos and fails on real ledgers. Agent-based reasoning is the architecture that fixes it.
Beyond dashboards: why CFOs need answers, not charts
Dashboards give finance teams more data but less clarity. CFOs are moving to conversational AI that answers in plain language.
See Cortena on your own invoices.
The fastest way to understand Cortena is to see it run on your real books.