The best app for scanning receipts is almost always the app that comes with your bookkeeping software, not a standalone scanner app. Only there does the photo turn into a booking proposal, and only there does the image land in an archive that belongs to the receipt. Six routes cover the German market in practice: DATEV Upload mobil is free and sends the photo into DATEV Unternehmen online, the Lexware app is included in every Lexware Office version and creates a booking proposal, sevDesk and Accountable read date, amount, tax and supplier and suggest the category, WISO MeinBüro scans into a document archive with full-text search, and GetMyInvoices fetches invoices automatically from online portals instead of photographing them (vendor statements, as of September 2026). The point above all of that: a photo only replaces the paper once the capture meets the requirements for proper bookkeeping, and that takes more than a sharp image.
At my desk, no receipt passes through my hands once it is in the system. Since 19 August 2026, the assigning and the matching against the card statement is done by Peter, my AI employee for receipts and bookkeeping. What the tools can do when reading and coding receipts, and where their limit sits, is in AI Bookkeeping: What Actually Works Today. This post is only about the first step, taking the photo.
The apps compared
Five things decide the choice, and they sit as the columns of the table. The benchmark for recognition is not the A4 invoice, it is the creased till receipt. Price is usually the least important point, because the scanner sits inside the subscription you need anyway.
All figures in the table are vendor statements. "GoBD-compliant" and "audit-proof" describe their archive, not your workflow: no product label certifies that your replacement scanning is proper in your own business. What it depends on is further down. And the sentence at the top is a selection principle, not a test result: the apps differ little at the photo stage and a lot on the route after it.
Three cases follow from that. If your tax advisor works with DATEV, DATEV Upload mobil is the obvious choice, you both access the same data. If you keep your own books, take the app of the software you already pay for, because Lexware Office, sevDesk, WISO MeinBüro and Accountable all bring a scanner. If your invoices sit in portals, meaning hosting, ad accounts and software subscriptions, fetching beats photographing, and that is what GetMyInvoices is built for. Which software fits your business is in Accounting Software for Small Businesses.
Recognition quality on German receipts
None of the vendors publishes a hit rate on its product pages, and that is more honest than a percentage that depends on your own receipts anyway. What is promised is the scope, not the accuracy: which fields a vendor reads is in the table above, how well it hits them nobody says.
More important than the vendor is the original in front of the camera. Four things decide the outcome:
- Thermal paper. The till receipt from the petrol station fades within months, and a faded receipt is, in case of doubt, no longer a receipt. The sooner you digitize it, the more there is to read.
- Creases and shadows. Lay the receipt flat, light from the front, no phone shadow across the amount.
- Small-value receipts. Receipts without separately stated tax are harder, because the tax amount cannot be derived from the image.
- E-invoices. Here the recognition step disappears entirely, because the data sits in the document in structured form. See German E-Invoicing: Dates and Exemptions.
Can I throw the paper away afterwards?
This is the question app round-ups usually skip, and it decides whether photographing saves work or doubles it. The answer sits in the German Fiscal Code (AO) and in the GoBD, the Federal Ministry of Finance circular of 28 November 2019 as amended on 14 July 2025.
The starting point is section 147 (2) AO: documents subject to retention may be kept as a reproduction on a data carrier if that complies with the principles of proper bookkeeping. For received business letters and accounting vouchers, the reproduction must match the original visually, and the documents must be available at any time throughout the retention period, readable without delay and machine-evaluable.
The GoBD spell that out for photography. Margin number 130 makes clear that visual capture may happen with the most varied devices, smartphones explicitly among them. The phone is not a workaround, it is approved. The same paragraph contains a sentence app lists rarely mention: where captured documents are enriched with full-text information via OCR, that full text must be retained, after verification and correction, for the duration of the retention period and made available for audit purposes. Text recognition is therefore not a passing convenience, it is part of what you keep.
Five things have to come together before the original may go:
- Visual correspondence. The electronic document must look like the original when made readable (section 147 (2) no. 1 AO, GoBD margin no. 130). Colour is required where colour carries evidential value, for instance negative amounts in red or coloured processing marks (margin no. 137).
- Immutability. Under section 146 (4) AO, a record may not be altered in such a way that the original content is no longer ascertainable, or that it is unclear whether the change was made later. A storage place in which files can be replaced or deleted unnoticed does not meet that.
- A written instruction. The procedure has to be documented (margin no. 136). The GoBD list what it should cover: who may capture, when and which documents are captured, whether visual or content correspondence is required, how quality is checked for legibility and completeness, and how errors are logged. For a one-person business that is a page, not a binder; the German Federal Chamber of Tax Advisers publishes a free template for it.
- No further work on paper. After capture, further processing may only happen with the electronic document, and the paper receipts must be withdrawn from the workflow (margin no. 139). Anyone who scribbles on the slip after scanning has to capture it again and link it to the first version via a shared index.
- No rule demanding the original. Only then may paper documents be destroyed (margin no. 140). What has to be kept in original form under tax or non-tax rules is excluded; whether you also keep documents whose evidential value does not survive in electronic form is your decision.
On top of that sits the process documentation under margin no. 151: for every system in use, it must be traceable how content, structure, process and results come about, in a way a knowledgeable third party can verify within a reasonable time. Margin no. 155 takes the edge off: as long as missing or inadequate process documentation does not impair traceability and verifiability, there is no formal defect of substantive weight. That is the legal position, not tax advice for your case: what you may actually destroy is a question for your tax advisor. The deadlines behind all of it are in Bookkeeping Basics for the Self-Employed.
Where a plain photo app falls short
Adobe Scan, the scan function in your notes app or a folder in the cloud all deliver a clean, searchable PDF. For retention as an accounting voucher they are missing three things:
- No link to the booking. A file called
Scan_0042.pdf belongs to nothing; a receipt archive with a document number and a booking reference does.
- No secured immutability. In an ordinary folder without permissions, versioning and logging, any file can be replaced and nobody sees it. That is precisely what section 146 (4) AO is aimed at. What decides this is those properties, not the file format.
- No machine evaluability in the sense of section 147 (2) no. 2 AO. Image files without the matching receipt and booking data are not an evaluable data set for an audit, and the full text won from OCR belongs to that set under margin no. 130.
That does not make such apps useless. For the receipt on the road that you upload afterwards, they are fine. They are just not the archive; what a receipt filing system in the business that takes on that role looks like is covered in its own post.
What comes after the scan: assigning and matching
The app gets the receipt into the system. The real work starts after that, and no scan function does it: every receipt needs the right document type, and every line on the card statement needs a traceable assignment, for expenses usually a receipt. That is the grind that costs an evening at month end.
Here, Peter takes it on. He works in my bookkeeping interface in the browser, screens the receipts that came in, sets the document type and goes through the card statement line by line. The figures from his first run I made public myself: 116 receipts screened, 38 out of 40 assigned correctly, a good hour. In the second run in September there were 68 receipts in the queue, 54 of them checked, and the control export afterwards showed no discrepancy.
The two open receipts matter more to me than the 38 he set. For those two, the assignment was not clear enough, including a case connected to a cancellation. Peter put them to me as a question instead of inventing an answer. That is exactly what the legal position above demands: a discrepancy between receipt and statement is a finding, not a job to smooth over. What arrives by email is sorted beforehand by Frieda. How a setup of inbox, receipts and drafts fits together is in AI Agent for Bookkeeping and Inbox, and how the browser work runs in Claude in Chrome: How to Use the Extension.
Frequently asked questions
Which app is best for scanning receipts?
The app of your bookkeeping software. It turns the photo into a booking proposal and puts the image into an archive that belongs to the receipt. If your tax advisor works with DATEV, DATEV Upload mobil fits. If you keep your own books, use the scanner of the software you already pay for.
Can I scan receipts for free?
Yes, on several routes. DATEV Upload mobil is free but requires access to DATEV Unternehmen online. Accountable allows up to five receipts a month on its free plan, Lexware Office has a free version with receipt capture. Plain scanner apps are free in their basic function too, but they do not replace a receipt archive (as of September 2026).
Can I photograph receipts with my phone and bin the paper?
In principle yes. The GoBD name smartphones explicitly as an approved capture device in margin no. 130, and under margin no. 140 paper documents may be destroyed after visual capture, as long as no other rule requires the original. The conditions are visual correspondence, immutable storage and a documented procedure. The decision for your own case belongs with your tax advisor.
Is a photo in my camera roll enough?
In an ordinary camera roll, no. It lacks the link to the booking, the protection against unnoticed replacement under section 146 (4) AO and the machine evaluability under section 147 (2) AO. What decides this is those properties, not the file format: the photo itself is a permitted capture, the unprotected image folder is not an archive.
Do receipts have to be scanned in colour?
Only where colour carries evidential value, as margin no. 137 of the GoBD puts it. Examples are negative amounts in red, or viewing, processing and signature marks in different colours. Since phones photograph in colour anyway, this is rarely a problem. An electronic signature or timestamp is not required for tax purposes (margin no. 138).
How to continue
Take a week and digitize every receipt on the same day, via the route your bookkeeping software provides. Then count two numbers: how many receipts you had to correct, and how many line items end the month without an assignment. That is your baseline.
The second step takes half an hour and is nearly always skipped: write your organizational instruction. Six lines along the points from margin no. 136 are enough for a one-person business, and the Federal Chamber of Tax Advisers' template gives you the frame. If you would rather not draft those six lines alone, bring your version into the community and have it read there before the first stack goes in the bin. Only after that does binning the paper rest on anything.
What remains is the work after the scan: assigning, matching, chasing what is missing. How I handed that to an AI employee, with a written process description, a learning mode and a control count before and after, I show in my community Claude Practitioners. The basics of what such an employee is and how you onboard one are on the page on hiring an AI employee.
