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See it in actionTax Engine
AI Accounting: your tax validator and automatic data extractor.
Accounting is not probabilistic. Neither is our engine: it extracts the data from every invoice, validates it against your region's rules and stops on anything doubtful. Nothing enters your books without your green light.
From the glovebox to your books, in three steps
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01Upload.
A photo from the van or a forward from your email. The receipt is in the vault before you've started the engine.
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02Validate.
The tax traffic light. Green: deduction clear, booked. Amber: the system hits the brakes, shows you the applicable rule, and waits for your decision. Nothing enters your books without a green light — yours or the law's.
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03Book.
Ready for the quarter. A clean export for your VAT return, no surprises and no last-minute reclassifications. If the tax office ever asks, every entry has its why.
The route of every document
Extract
Photo, PDF or forwarded email. The engine reads the raw data — amounts, VAT numbers, dates, line items — without a single keystroke.
Validate
Before any conclusion: VAT number checked live against VIES, balanced to the cent with exact arithmetic, and duplicates or mismatches checked against what's already booked.
Test against the law
The traffic light. Green: the rule is clear and gets applied — reverse charge included, without you needing to know what that is. Amber: grey area — the engine brakes and asks you for a decision, options included. Red: a data point is wrong — blocked until you fix it; there is no “book it anyway” for a mismatch.
Book or escalate
Green enters the ledger with its reasoning attached. Amber waits for your decision — and it's recorded: you, not a robot.
Six guarantees you can verify
Exact arithmetic
Every calculation is reproducible to the cent. Same document, same result, every time.
VIES, live
Intra-community VAT numbers are validated against the European register, not a stored list.
Doubtful items, in plain sight
What the engine can't resolve doesn't disappear into a drawer: it lands on the doubtful list, with the reason.
Verifiable fingerprint
Every document keeps its SHA-256 hash: you can prove the archived file is the one you uploaded.
Mirror closing
The quarter is laid out box by box like the official form: you copy, you don't interpret. And once filed, untouchable: the machine never reopens a declared quarter.
You sign
Nothing grey enters your books without your green light. Who decided stays on record, for the day someone asks.
The copilot that learns (and what it will never learn to do)
On top of the deterministic engine lives a copilot. It books nothing — that part is sacred and belongs to the engine and your signature — but it watches, remembers and warns.
It remembers your decisions
Mark a bank movement as private or ignore and next time that counterparty appears, it classifies itself — offering to apply the same mark to the similar ones you already had pending. Your judgement becomes rules; the rules remain yours.
It watches the gaps, with evidence
“The bank says a receipt is missing”: real charges from your statement with no invoice attached. And without waiting for the bank: if last month's usual expense — the phone, the hosting — hasn't arrived this month, it suggests it on its own, with the previous details preloaded, waiting for your confirmation.
An advisor inside your books, awake 24/7
Not a generic chat: it has your ledger in front of it — your expenses, your invoices, your quarter — alongside your region's tax doctrine and whatever you hand it in the Knowledge Vault. On a Sunday at 11 pm, too.
It knows its limits
Ask it something outside the perimeter — collective layoffs, mass retail — and it will say so, pointing you to a human advisor. A copilot that can't say “not mine” is a hazard; ours can.
House rule: what's learned suggests; only your signature books. No learned rule ever writes into your ledger on its own.
Who this engine is for — and who it isn't
Good fit
- Freelancers in Spain and zzp'ers in the Netherlands who file their own quarters.
- Invoices and expense receipts: extraction, VAT exact to the cent and reasoned deductibility.
- EU VAT number validation against the European VIES register.
- Modelo 303/130 (ES) and BTW return (NL) ready to copy box by box.
- Bank reconciliation via CSV (Santander and ING) with transaction triage.
Outside the perimeter
- — We do not keep books for companies with complex corporate structures.
- — We are not a POS and do not cover intensive retail receipts.
- — We do not handle payroll or complex employment cases.
- — We are not legal advisors: grey areas get flagged and consulted, never decided for you.
We don't play guessing games with your money
When in doubt, it stops.
Nothing enters your books on an AI hunch. Grey cases stop and wait for your decision. Your accounting is not a testing ground.
It shows you the law, not a black box.
Every proposal arrives with the rule behind it. You know the why of each deduction before you approve it — and you can defend it if anyone ever asks.
The last word is yours.
Approve, correct, or reject with one tap. The copilot reads the map; the wheel is yours.
We call it
Assisted Sovereignty
Automation where the law is clear, brakes where it isn't.
The comparison
The others
The Black Box
Blind automation. You feed it a receipt and pray the OCR guesses the category and the deduction right. Or you pay for an ERP full of modules you'll never use. And if the tax office asks, you're on your own.
SunnyTaz
The Copilot
Assisted Sovereignty. The system tells you why it suggests each deduction, citing the law. If a case is grey, it stops. Your money, your rules — and a paper trail that shields you.
With the Commercial Engine, the sentence you dictate on site becomes a quote — and the accepted quote, an invoice. Zero double entry.
Your quarters, under control.
Start free with your real invoices. The engine extracts and validates; the last word is always yours.