Why expense records are the job nobody enjoys
Every business owner knows the scene. At the end of the month — or worse, the end of the year — you are looking at a pile of receipts, supplier invoices and payment confirmations that all have to be typed into your records by hand. Paper receipts fade, PDF invoices vanish into the inbox, and typing them out is slow and easy to get wrong.
Yet accurate expense records matter to a sole trader (OSVČ — a self-employed person in Czechia). They drive the income tax base, the DPH (Czech VAT) deduction if you are registered, and your own picture of how the business is doing. A mistake means either tax overpaid or an awkward conversation with the tax office.
Which is why tools that read documents with artificial intelligence exist.
How AI document recognition works
Traditional OCR versus modern AI
Older digitisation systems used OCR — optical character recognition. OCR turns an image of text into machine-readable text, but it has a hard limit: it recognises letters and digits without understanding what they mean. It cannot tell which number is the IČO (Czech business ID), which is the total and which is the document number.
Modern approaches go considerably further. They use large language and computer-vision models that can:
- Understand the layout — tell the header, the line items, the summary and the footer apart
- Recognise what a value is — know that "CZ12345678" is a DIČ (tax ID) while "12345678" is an IČO
- Keep related values together — attach each tax base to the right VAT rate
- Cope with different formats — handle invoices laid out differently by different suppliers
- Cope with poor input — read a crumpled receipt from a phone photo
What gets extracted
Good recognition will pull the following from an ordinary invoice or receipt:
- Supplier name and address
- Supplier IČO and DIČ
- Document number
- Issue date and date of taxable supply
- Line items: description, quantity, price
- Tax base and VAT, split by rate
- Total to pay
- Payment details
Those values are carried into the expense records, where all you do is check and confirm them.
The workflow in four steps
- Capture — photograph the receipt or invoice with your phone, or upload a PDF or image (JPG, PNG). What matters is that the document is legible and completely in frame.
- Analysis — the system sends the image for analysis. The model identifies the structure of the document and extracts the key values.
- Check and correct — the extracted values appear in a form. You review them, fix anything that is off, and pick the right expense category.
- Confirm — one click files the record in your expenses.
Compared with typing each document out by hand, the saving adds up quickly once you are handling dozens of documents a month.
Accuracy: the honest version
Recognition is not perfect, and it is worth saying so plainly. Accuracy depends on the quality of the image, the type of document and how complicated it is.
Where it works best
- Printed invoices in a standard layout
- PDF invoices with a real text layer
- Sharp photographs in good light
- Czech-language documents with a familiar structure
Where it struggles
- Faded or crumpled thermal-printer receipts
- Handwritten documents
- Unusual layouts
- Badly lit or blurred photographs
- Documents with many line items in small type
That is why the check-and-correct step is not optional. Never accept the output unverified. Dependable systems also show how confident the recognition was, so you know which values deserve a second look.
Scanning from your phone
One of the real advantages is handling documents where you are, rather than letting receipts pile up in a wallet or a box on the desk.
Modern tools offer mobile scanning: you pair the phone with the web application and photograph documents straight into the system. In Taxorio this runs through a QR code — the app shows you a code, you scan it with the phone, and an interface for photographing documents opens. The picture goes directly to the system for analysis. No app to install; the phone browser is enough.
It earns its keep on business trips, when buying materials and on cash purchases, where you can deal with the document on the spot instead of keeping the paper.
Categorising expenses
Categories are not only about tidiness; they matter for tax. Sort expenses into categories that match what your business actually spends money on.
Common categories for a sole trader include:
- Software — licences, tool subscriptions, cloud services
- Hardware — computer, monitor, printer, accessories
- Travel — fares, accommodation, meals on business trips
- Phone — mobile tariff, internet connection
- Services — bookkeeping, legal services, marketing
- Office — rent, utilities, office supplies
Well-categorised expenses make the annual tax return considerably easier, whether you claim actual expenses or the flat-rate percentage.
Recognition and DPH
If you are registered for DPH, capturing the tax figures from documents received is critical. To claim a deduction you need the tax document recorded correctly, with the tax base and the VAT amount split by rate.
Two rates apply in Czechia in 2026: the standard 21 % and the reduced 12 %. Recognition should identify and split the base and the VAT accordingly — and here too the output needs checking, because VAT recorded wrongly turns into a problem in the kontrolní hlášení (VAT control statement).
Security and data protection
Using recognition means sending images of your documents somewhere to be processed. It is worth knowing how they are protected:
- Encrypted transfer — data should travel over an encrypted connection (HTTPS/TLS)
- What happens to the image — find out whether the provider stores it or deletes it after processing
- GDPR — the processor has to follow data protection rules
- Where the servers are — some organisations prefer processing inside the EU
A trustworthy provider makes this clear in the terms of service.
Practical tips for better results
Image quality drives accuracy more than anything else:
- Plenty of light — shoot in daylight or under a lamp, and keep shadows off the text
- Shoot square on — put the document on a flat surface and photograph it from directly above
- The whole document in frame — including the edges
- Sharpness — wait for the phone to focus before you press the shutter
- Contrasting background — a white receipt on a dark surface, and the other way round
- Do it promptly — thermal receipts fade, so the sooner you scan them the better
Who it pays off for
Recognition is not for everyone. If you file two or three documents a month, typing them in will not hold you up. If you record dozens of receipts and invoices a month, the time saved adds up fast.
Typical cases where it earns its place:
- Tradespeople and technicians buying materials constantly
- Consultants and sales people with travel expenses
- IT professionals with a long list of software licences and subscriptions
- Anyone who wants a current view of costs rather than a yearly catch-up on paperwork
In Taxorio, recognition is available on the free plan with a limit of 5 documents a month — mobile scanning by QR code included, so you can photograph documents straight from the phone. The PRO plan, from 69 CZK a month, raises the limit to 150 a month.
In short
AI document recognition turns the slow business of retyping receipts and invoices into a check-and-confirm step. It is not perfect and it needs a human looking at the output, but it saves real time and cuts down mistakes in your expense records.
The key is a realistic expectation: the AI is an assistant, not a replacement. It reads the values and fills in the form; you check and confirm. Between you, the records get done faster and more accurately than either side would manage alone.
Taxorio scope: Taxorio provides invoicing and income/expense records for Czech sole traders. It is not full accounting or personalised tax advice. For an unsupported or unusual case, verify the treatment with a Czech accountant or tax adviser before filing.