Tracking expenses sounds tedious, but with the right system it takes minutes a week — and it directly lowers your tax bill. Here's how to do it the easy way.
Why expense tracking pays off
Every allowable expense reduces your taxable profit. Miss a few each month and, over a year, you can easily overpay hundreds of pounds in tax. Tracking expenses well isn't admin for its own sake — it's money back in your pocket, plus solid evidence if HMRC ever asks.
The three-part system
Good expense tracking has three steps: capture, categorise, store. Nail all three and you're done.
1. Capture — the moment you spend
The biggest cause of lost deductions is the receipt that never gets recorded. Fix this by capturing at the point of purchase:
- Paper receipt? Photograph it immediately.
- Email receipt? Forward it to your bookkeeping inbox.
- Card payment? Your bank feed records it automatically.
With AI receipt scanning, the software reads the supplier, date, total and VAT from the photo — no typing.
2. Categorise — against UK tax rules
Each expense needs the right category so your profit and tax are accurate. Software tuned to HMRC rules suggests the category and learns from your corrections, so it gets faster over time. Not sure what's claimable? See what freelancers can claim.
3. Store — safely, for six years
HMRC can ask for evidence going back years. Digital storage means receipts never fade or get lost, and they're searchable in seconds. Your software keeps them for the required period automatically.
Set yourself up for success
- Separate business account or card — every transaction is then clearly business.
- Connect Open Banking — transactions import daily, ready to match to receipts.
- Track mileage — claim 45p/mile for the first 10,000 business miles, then 25p.
- Capture use of home — £6/week flat rate or a share of actual costs.
Make it a five-minute weekly habit
Block five minutes each week to confirm the AI's suggestions, match any receipts to bank transactions, and clear anything uncategorised. Because the heavy lifting is automated, that's all it takes to keep your books current and your tax estimate accurate.
Connect expenses to the bigger picture
Standalone expense apps leave you exporting data elsewhere. When expense tracking is part of your full bookkeeping software, each receipt instantly updates your profit, VAT position and live tax estimate — nothing to sync, nothing double-entered.
Frequently asked questions
What's the easiest way to track expenses? Capture digitally with AI scanning, auto-categorise, and connect your bank feed.
How do I keep receipts for HMRC? Photograph them; digital copies stored in software are accepted.
Should I use a separate business card? Yes — it makes every transaction clearly business.
Track every expense in seconds — try LedgerlyPro free for 30 days.