Why the paperwork is worth the effort

Nobody starts a business because they love filing receipts. But good record-keeping is one of those quiet habits that separates businesses that sail through January from those that spend the first week of the year in a fog of missing bank statements and unclaimed expenses.

Accurate records do three things at once. They let you file a correct tax return without guesswork. They give you a defensible position if HMRC ever asks questions. And, perhaps most usefully, they tell you what is actually happening in your business — which customers pay late, which costs are creeping up, and whether that new contract is really as profitable as it looked on the back of an envelope.

The rules are not designed to trip you up. HMRC simply expects that you can show what you earned, what you spent, and why. If you can do that, you are in good shape.

What to keep, and for how long

Start with the obvious: sales invoices, purchase invoices, receipts, bank and credit card statements, paying-in slips, and contracts. Add anything that supports a claim you make on a return, such as mileage logs, home-office calculations, or evidence of a business proportion of a phone bill.

Payroll records matter too. If you employ anyone, keep details of wages, PAYE, National Insurance, pension contributions, and any statutory payments, along with the paperwork showing how you worked them out.

On timing, a sensible rule of thumb is six years from the end of the relevant accounting period. Some records have shorter requirements — PAYE records, for example, generally need to be kept for three years after the end of the tax year they relate to — and self assessment records for the self-employed are usually kept for five years after the 31 January filing deadline. If you are ever unsure, keeping records for six years covers the vast majority of situations.

Building a system that survives a busy week

A neat filing system is worthless if it only works in a quiet week. Design something that takes seconds to use when you are rushing between jobs.

• Separate your money. A dedicated business bank account, even a simple one, saves hours of untangling personal and business spending later.
• Deal with receipts the day you get them. Photograph them, note what they were for, and drop them into a dated folder. A shoebox of faded paper is not a record.
• Name files consistently. Something like 2025-04-14 Supplier Invoice Stationery does more for you than you would believe.
• Reconcile monthly. Spend thirty minutes each month matching your bank statement to your records. Small gaps are easy to fix in April; mysteries are not.
• Keep a mileage log. Record the date, destination, purpose, and miles for every business journey. HMRC expects a reasonable record, not a reconstruction.

If you are VAT registered, be especially careful. HMRC can impose penalties of up to £3,000 where VAT records are inadequate, and further penalties may apply if you cannot support the figures on a return.

Going digital without the headache

Most businesses now keep records digitally, and for VAT-registered businesses that is generally a requirement under Making Tax Digital. The good news is that digital record-keeping is genuinely easier once set up.

Choose one place to hold your records and stick to it. Scanners and phone apps can turn a pile of paper into searchable files, and cloud accounting tools can pull transactions straight from your bank feed. Whatever you use, make sure it produces records that are clear, complete, and retrievable — if you cannot find a transaction in two minutes, the system needs work.

Common mistakes that cost money

• Mixing personal and business spending. It makes the business proportion of costs almost impossible to prove.
• Claiming without evidence. If you cannot show the receipt, the expense is likely to be disallowed.
• Leaving it all to the last minute. Panic-filing in January leads to missed expenses and mistakes.
• Throwing records away too early. You may need them for an enquiry long after the return is filed.
• Keeping records only in your head. If someone else had to take over tomorrow, could they follow the trail?

Getting support before you need it

You do not have to become an accountant to keep tidy records, but a little expert help goes a long way. A good consultant will set up a chart of accounts that fits your trade, agree a simple monthly routine with you, and flag issues while they are still small.

Book a short review each quarter. Bring your bank statements, your sales figures, and any questions. You will catch missed expenses, spot cash-flow problems early, and arrive at year end with everything already in order.

Above all, be kind to your future self. Half an hour a week now is worth several stressful days later, and it turns your records from a chore into a genuinely useful picture of how your business is doing.