Bookkeeping for People Who Keep Receipts in Their Car

Carrier bag on the back seat. Thermal receipts from Screwfix mixed in with fuel slips and one that might be a parking stub from August. Hard to say without reading glasses and good light.

Most sole traders have been here. The job comes first, the paperwork waits, and by January the paperwork's become an archaeology project.

Why it keeps happening

It's not a discipline problem. It's a timing problem.

There's no moment in a busy week when logging expenses feels urgent enough to do right now. The job is always more pressing. Receipts go in the pocket, onto the seat, and wait for a day that never quite arrives.

Five minutes on a Friday

Pick one fixed time a week. Fridays work well. The week's spending is still fresh.

Log what came in and what went out: materials, fuel, tools, subcontractors, phone, miscellaneous. If it's taking longer than five minutes, the system's wrong, not you.

The receipts themselves: a photo on your phone is fine. HMRC accepts digital records. You don't need a physical archive. You need something legible you can find if asked.

What needs to go in

For a sole trader, the basics:

Sales and income: every invoice raised, every payment received.
Materials and stock: anything bought for a specific job.
Fuel and travel: mileage if it's your own vehicle, or actual fuel costs for a dedicated van.
Tools and equipment: one-off business purchases.
Subcontractors: anyone you pay to help on a job.
Running costs: phone, broadband, software you use for work.

Not personal shopping. Not lunch unless it's a genuine business meal with a client.

The cost of doing it all at once

By January, you'll have forgotten what the August Screwfix receipt was actually for. Was that the Martin job or the Parker job? In August you knew. Now you're guessing. A guess won't hold up if HMRC asks.

Batch bookkeeping also costs more in accountancy fees. Tidy records take less time to work with than a reconstruction project.

Getting started

If you've never had a proper bookkeeping system: ask your accountant to set one up with you. One conversation, and you've got a process that saves money across the year.

Already behind on this year's records? Hand it over. It's fixable. Accountants have seen far worse than whatever's in your glove box.

KP Accountants helps sole traders and trades across Cornwall keep their records straight. Set fee, no surprises. Get in touch.