Most tradesmen already "scan" receipts, in a loose sense — they snap a photo on the way past the till so it doesn't blow out of the van. That's not the same as digitizing it. A photo is just a picture of a piece of paper that's still going to fade, still isn't searchable, and still needs someone to type the numbers out by hand at year end. A proper receipt scanner reads it.
What "scanning" should actually mean
A real receipt scanner uses AI (OCR, technically) to read the vendor, the date, the total, the VAT breakdown and often the individual line items straight off the image — turning a photo into structured data in a couple of seconds. That's the difference between a folder of 400 photos nobody can search, and a list you can filter by job, by supplier or by month instantly.
The fading receipt problem
Thermal till receipts — the kind from Screwfix, Toolstation, most builders' merchants — are printed with heat-sensitive paper, not ink. Left in a warm van or a jacket pocket, the print fades to nothing within weeks, sometimes days in summer. If the only record is the paper itself, it's already degrading from the moment it's handed to you. Photographing it doesn't stop that clock — but extracting the data from it, once, while it's still legible, does. The photo becomes a backup; the extracted numbers become the actual record.
Camera roll vs generic scanner vs a trade-built one
| Camera roll | Generic scanner app | Site Wallet | |
|---|---|---|---|
| Data extraction | None — just an image | Basic, often needs correction | AI trained on real trade receipts |
| Searchable | No | Sometimes | Yes — by job, vendor, date |
| Job-level totals | No | Rarely | Automatic, live |
| VAT broken out | No | Rarely | Yes, automatically |
| Line items captured | No | Rarely | Yes, itemized |
Handling receipts that aren't straightforward
Not every receipt is a clean printed till slip. A handwritten invoice from a plumbing merchant, a crumpled receipt that's been through a wash, an emailed PDF invoice from a supplier — a decent scanner needs to cope with all of it, not just the easy cases. It's also increasingly common to buy materials — tiles, fittings, specialist parts — from an EU supplier with a receipt in euros or another language entirely. That shouldn't mean manually converting currency and translating a supplier name by hand; a scanner built for this should read it and convert it automatically, keeping the original alongside the converted figure for your records.
Batch scanning: the end-of-week catch-up
Nobody scans every receipt the second they get it, every single time — some days it's a stack from the jacket pocket at 6pm. A scanner that only handles one receipt at a time turns that catch-up into a chore. Being able to drop a whole pile in at once and let the AI work through them individually is what actually makes the habit stick, rather than becoming another job avoided until the shoebox is full.
What HMRC actually wants to see on a receipt
For a VAT-registered purchase, HMRC generally expects a valid VAT receipt or invoice showing the supplier's name, VAT number, date, a description of what was bought, and the VAT amount separately from the net total — not just a total figure. A scanner that only captures the bottom-line number misses exactly the detail that matters if a claim's ever checked. Itemized, VAT-broken-out extraction isn't a nice extra — it's what makes the digital record actually stand in for the paper one.
How Site Wallet handles this
Snap a photo — or drop in a batch at the end of the day — and Site Wallet's AI reads vendor, date, total and VAT off it in about two seconds, including crumpled, faded or handwritten receipts, and pulls out individual line items where they're printed. Receipts in another currency or language are converted automatically, with the original kept alongside for the record. Everything's tagged to a job and searchable instantly, with a PDF, CSV or full photo ZIP export ready whenever it's needed.
FAQ
Do I still need to keep the paper receipt once it's scanned?
HMRC generally accepts digital copies of receipts as valid records, provided they're a complete and accurate copy of the original. Once it's properly scanned and stored, keeping the physical slip isn't usually necessary — useful, since most of them won't survive six years anyway.
What if the AI misreads something?
A good scanner flags anything it's not confident about for a quick one-tap confirm, rather than silently guessing — so the odd smudged total gets a human glance instead of a wrong figure in the books.
Can I scan an emailed invoice, not just a paper receipt?
Yes — a screenshot or saved PDF of an emailed invoice works the same way as a photo of a paper one for extraction purposes.