AI bookkeeping for high-tech and deep-tech companies.
Thousands of suppliers, hardware and software alike, and every invoice split across products, projects and cost centres. Cortena codes each line in seconds, checks it against your rules, and readies it for booking. Your team approves, nothing more.
For high-tech and deep-tech companies · DATEV, Exact Online and Twinfield
One invoice. Forty lines. A dozen cost centres.
A high-tech invoice is rarely one booking. It is a stack of allocations in a single PDF, times a supplier base in the thousands.
Cloud per product team. Components per device. Licences per project. Some opex, some capitalised, some reverse charge. Each line needs its own GL account, cost centre, cost carrier and VAT code. Across thousands of suppliers, that is a department, not a task.
| Line | Account | Cost centre | BU | Amount |
|---|---|---|---|---|
| Compute · Core API | 6570 | 210 | 9 | 18.640,00 |
| Object storage · Core API | 6570 | 210 | 9 | 2.980,50 |
| Data egress · Edge CDN | 6570 | 220 | 9 | 6.415,20 |
| Managed Kubernetes · Platform | 6570 | 300 | 9 | 4.220,00 |
| GPU compute · R&D Vision | 6570 | 410 | 9 | 22.870,00 |
| Enterprise support · Platform | 6570 | 300 | 9 | 3.150,00 |
Every line carries three coordinates.
Before a line can book, it has to answer three questions. The answers rarely match the line above.
What kind of cost it is
Materials, services and licences each follow their own rule: inventory, expense or capitalised. Decided per line, not per invoice.
Which team owns it
The same supplier can hit five cost centres on one bill. Every split has to hold up at close.
Which product or project bears it
The product, project or programme the cost belongs to. It is what gives you a true margin per product, and it shifts with every roadmap.
Where all three compound
Development split between capitalised and expensed, carved by project, reconciled against grants. One wrong line distorts your R&D capitalisation and your tax position. This is the work Cortena is built to get right.
Every line coded. Every rule enforced.
Accounts payable automation built for this exact work: from PDF or e-invoice to a booking-ready batch in seconds, no matter how many suppliers send them.
Every line gets its account, cost centre and VAT code
The agents read every line, not just the header. Each position is coded against your chart of accounts, reverse charge applied, the reasoning shown on every field.
Your booking logic, applied every single time
Your allocations, opex-versus-capitalised treatment and supplier rules live in your briefing. The same rule books invoice one and invoice ten thousand the same way.
The unsure ones stop and ask
A line that breaks a rule or looks off routes to the right person, reason attached. Everything else keeps moving, so more suppliers never means more headcount.
Batches your accountant can post
Approved invoices leave as booking-ready batches for DATEV, Exact Online or Twinfield, the source document on every entry. GoBD-aligned, archive stays in DATEV.
The numbers, plainly.
of invoices coded with no human touch. Your team reviews the exceptions, not the pile.
per invoice from arrival to booking-ready, every line and allocation included.
to live, white-glove onboarding included.
Figures reflect typical results across Cortena teams. Onboarding sizes them on your own volume.
Straight answers on volume and complexity.
Line by line. The agents read every position on the invoice, compute, storage, licences, components, and code each one with its own GL account, cost centre and VAT code, applying reverse charge where the supplier sits abroad. The reasoning is shown on every field, so your team can verify any line in one look.
Yes. Cortena has processed more than 50,000 invoices, and volume does not change the process. Every invoice is captured, coded and checked the same way, whether it is from a hyperscaler you pay monthly or a component vendor you use once. A larger supplier base does not mean a larger finance team.
Yes. Allocation is exactly the kind of rule Cortena's briefing layer holds. You define how a cloud bill splits across product teams, how a component invoice maps to a BOM, or how a project carries its own costs, and the agents apply that logic to every line, consistently and traceably.
You update the briefing and the next invoice follows the new rule. Rules are written guidelines, not code, so a new product line, a new project or a new supplier does not need an engineering ticket. Cortena also learns from your corrections, so precedents sharpen over time.
DATEV via the official Rechnungsdatenservice 1.0, Exact Online and Twinfield. Batches arrive booking-ready with the source document attached to each entry, and the archive stays in DATEV. Your accountant keeps their tool and their process.
They stop. Any line that does not match your rules routes to the right person with the reason shown, and nothing posts without approval. Around 90 percent of invoices go through with no human touch, so your team spends its time on the rest.
- Still have a question?
Give your finance team its time back.
Book a demo and bring a week of real invoices. We will code every line live, across as many suppliers as you send.
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