Use case
Tradespeople: How to Manage Job-Site and Materials Receipts?
Between the morning trip to the merchant, the midday hardware run and the evening fill-up, a tradesperson collects more receipts than they can file. Here's a field-tested method for losing nothing, knowing what each job cost, and keeping a clean line between personal and business spending.
Why job-site receipts disappear
A tradesperson racks up ten to thirty receipts a week: materials from the merchant, screws from the DIY superstore, fuel, tolls, consumables, tool hire. They all end up in a jacket pocket, the glovebox or the dashboard, and end up illegible or lost.
Thermal paper doesn't help: left in the heat of a van, it fades white within weeks. Many tradespeople find an envelope of blank receipts at year end — expenses they genuinely paid but can no longer deduct.
A lost receipt isn't just an undeducted expense: it's also the matching VAT you're funding out of your own cash flow.
The van rule: scan before you drive off
The only method that holds up on a job site is one that requires no organisation. After every purchase, before starting the engine, photograph the receipt. Twenty seconds, standing up, phone already in hand. The paper can then go wherever it likes: the information is saved and dated.
Extraction reads the supplier, the date, the gross amount and VAT, then sorts the expense into materials, fuel or tools. The receipt is attached to the current job folder, and offline mode queues the scan when there's no signal in a basement or a dead zone; syncing happens as soon as the connection returns.
Organising purchases by job
A tradesperson running three jobs in parallel needs to know what each one cost, not just what the business spent overall. Attaching a purchase to a folder at scan time is what turns a pile of receipts into profitability tracking.
Purchases dedicated to one job
Materials, cherry-picker hire, waste removal: these go straight into the job's folder. At the end of the job, the total of attached expenses is compared against the signed quote, so you know immediately whether the margin held.
General purchases
Consumables, PPE, small tools, fuel: these fall under the business's overheads and go into the "General" folder. Artificially splitting them across jobs distorts both readings.
Purchases spanning several jobs
A pallet of plasterboard for two jobs is handled either by noting the split in the comment or by two separate lines. Either method works, as long as it stays the same all year.
Trade accounts: switch to the monthly invoice
At builders' merchants and trade chains, a professional account changes the nature of the proof: instead of thirty anonymous receipts, you get one monthly, named invoice with item detail, VAT, and your job references if you give them at the till.
Keep scanning delivery notes anyway: they prove receipt of goods and let you check the month-end invoice, which more often than you'd think contains a line that isn't yours.
Keeping personal and business apart
Mixing personal and business spending is the single most scrutinised point on a tradesperson's file, because the same shop sells the saw for the job and the paint for the living room. Two habits are enough to secure this: pay for business purchases with the business account, and ask for two receipts when the trolley is mixed.
- A card dedicated to the business, never used for personal shopping.
- Two trips to the till when the trolley holds personal items too.
- A note on the expense when an item is for mixed use, with the share retained.
- A monthly export sent to the accountant, rather than a yearly box.
In short
On a job site, bookkeeping is won at the moment of purchase, not at declaration time. Scan every receipt before driving off, attach it to the relevant job, favour trade accounts for monthly invoices, keep personal spending strictly separate from business, and send a clean monthly export rather than a shoebox in April.
Questions & comments
A question about this guide? Ask below — I answer personally within one business day.
- J
Julien
August 12, 2026
If I lose a €9 toll receipt, can I still claim it with just a bank statement?
ScanComptaAuthorYes — for a small amount, a bank statement plus a signed statement is usually accepted. You cannot reclaim VAT without the original receipt though.
- S
Sonia
August 3, 2026
Do I need to keep the paper receipts after scanning them with your app?
ScanComptaAuthorNo. If the scan is a faithful and durable copy, the digital version is enough. We store everything for 10 years for you.
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Frequently asked questions
Is a crumpled or faded receipt still valid?
Yes, as long as it stays legible. Thermal paper fades within months: a photo taken on the day of purchase keeps a legibility the original won't have by the time of an audit. That's the main reason to scan straight away.
Do I need a trade account with the merchant, or is the receipt enough?
A trade account is much preferable: it generates a monthly, named invoice with detailed VAT, far more solid than a pile of anonymous till receipts. Keep receipts from one-off purchases outside the account for emergency buys.
How do I split a materials purchase between two jobs?
Attach the expense to the main job and note the split in the comment, or record two lines by splitting the amount if the invoice allows it. What matters is that the rule you use is consistent and written down.
What if I buy something for myself at the same time as materials for a job?
Ask for two receipts at the till; this is always accepted. Failing that, only deduct the business share and note the calculation on the expense: a mixed receipt deducted at 100% is one of the easiest things for an audit to challenge.
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