The right account on every line. Before you touch it.
Cortena reads each invoice line and codes it to the GL account, cost centre and VAT key your books expect. It tackles complex allocations too, across projects, cost carriers and other dimensions, the way your best bookkeeper would.
Instruct it like your best bookkeeper.
Cortena does not guess in a vacuum. Before it codes a single line, it reads a briefing you set once: your chart of accounts, your VAT logic, your booking history and your cost-centre logic.
Your chart of accounts
Cortena works in your accounting structure, whether SKR04, SKR03, or your own, and adapts to every rule you have in place. Each allocation is precise to your books, not a generic mapping.
Your VAT logic
Set how each VAT code is used, so every line gets the right tax treatment. Handle the full logic yourself, or keep it simple and leave the detail to your tax advisor.
Your booking history
Cortena reads how past invoices were posted and follows the patterns your team has already set in the books.
Your cost-centre logic
Cost-centre rules by supplier, project or line description, and the same for other dimensions like cost carriers. Our agents automate even complex allocations, consistently across every entity you run.
This supplier's last 9 invoices were posted to 6815 · Legal and consulting, and the line reads as advisory work. VAT set to BU 9 · 19% to match.
Every code shows its reasoning.
Click any coded field and Cortena tells you why. Which account, which rule, which precedent, and how confident it is.
No black box. When Cortena posts a line to 6815, you see the vendor pattern and the past bookings it followed, with a confidence score you can act on. Your team reviews the reasoning, not just the result.
It gets sharper with every correction.
Coding is a loop. Cortena proposes, your team confirms or corrects, and the next invoice from that supplier is coded the way you just taught it.
Briefed
Cortena starts from your chart of accounts, vendors, history and cost-centre rules.
Runs
Each new invoice line is coded to an account, cost centre and VAT key with a confidence score.
Corrected
When your team changes a code, Cortena captures the correction against that supplier and line pattern.
Improves
The next matching invoice follows your correction. Accuracy climbs as your books teach it.
The learning stays inside your tenant. Cortena never trains shared models on your data.
When it is not sure, it asks.
Cortena would rather hold a line for review than post a wrong code. Lines below its confidence threshold are flagged, with a suggestion, and wait for you.
You set where the line sits. New suppliers, unusual line items and codes that break a pattern are held for a human. A review and a click, not a wrong booking you find at month-end.
| Line item | Net | Account | KST | KTR |
|---|---|---|---|---|
| Software licences · Sales | 1.200,00 | 6837 | 3100 | 500 |
| Software licences · Ops | 980,00 | 6837 | 2200 | 500 |
| Onboarding · Project Nord | 1.000,00 | 6825 | 4400 | 620 |
One invoice, split the way your books need.
For a simple business, one invoice maps to one account, and that is fine. Complex businesses are different: a single line needs several dimensions at once, and each one is critical to get right.
This is where Cortena stands apart from rule-based tools. It codes line by line, so every line carries its own account, cost centre and cost carrier, allocated exactly the way your books need.
~90%
of lines are coded without a human touch, after the learning period.
The first weeks carry more corrections while Cortena learns your books. We do not quote a day-one number, because it would not be true.
AI invoice coding, answered.
AI invoice coding is Cortena assigning the right GL account, cost centre and VAT key to every line of an incoming invoice, before it reaches your ledger. It is the bookkeeping a bookkeeper does by hand, done automatically on your chart of accounts.
Yes. SKR04 is preloaded and SKR03 is supported. Cortena codes to the accounts your ledger actually uses, with the correct BU key and cost centre for DATEV, and maps to your accounts in Exact Online and Twinfield.
After a short learning period on your books, around 90% of lines are coded without a human touch. The first weeks carry more corrections while Cortena learns your patterns. Lines it is unsure about are flagged for review, not guessed.
Yes. Every coded field shows its reasoning: the vendor pattern, the past bookings and the rule it followed, with a confidence score. There is no black box, and your team reviews the reasoning before anything posts.
Yes. Cortena codes line by line, so a single invoice can carry different accounts, cost centres and even different Mandanten across its lines. Shared costs are split the way your books need them.
No. Learning stays inside your own tenant and improves coding for your books only. Cortena does not train shared models on customer data, and everything is hosted in the EU.
- Still have a question?
Watch it code your own invoices.
Book a demo and bring a week of real supplier invoices. We will code them to your accounts, show the reasoning on every line, and flag the ones we would hold for you.
Book a demo