A landscaper in Taunton keeps every receipt. They are in the van, in the kitchen drawer, in a jacket he stopped wearing in April, and in the glovebox where the thermal ones have faded to blank strips. In January he spends two evenings and most of a Sunday sorting them, gives up on about £600 of fuel he cannot evidence, and pays tax on money he actually spent.
The shoebox is not the cheap option. It is the expensive one, with the cost moved to a month when you have no time and no appetite for it.
Weekly beats annual by a distance
The difference between a bookkeeping system that survives and one that collapses is frequency, not software. An hour a week is roughly fifty hours a year and it never accumulates. A weekend in January is twenty hours and it is twenty hours of reconstructing decisions you no longer remember.
More importantly, weekly figures are useful and annual figures are history. If your materials cost jumps in March, weekly bookkeeping tells you in March. Annual bookkeeping tells you the following January, by which point you have spent nine months quoting at the old numbers.
Pick a slot and defend it. Friday afternoon works for most trades because the week's paperwork is in front of you and the bank has cleared most of it. What you do in that hour is short: match every line on the bank to a document, chase anything unpaid past terms, and file the week's receipts once.
Bank feeds do the matching, you do the deciding
A bank feed pulls your transactions into your accounting software automatically. It removes typing, which is the part people hate and the part where errors come from. It does not remove judgement, and the software's suggestions are guesses based on what you did last time.
Reconciliation is the actual discipline. It means the balance in your books equals the balance on the statement, line by line, with every difference explained. Do it monthly at the very least. The value is not tidiness. It is that an unreconciled account hides things: a duplicate supplier payment, a direct debit for a service you cancelled in 2023, a customer payment that never arrived, a card subscription somebody took out on their own authority.
If you take card payments, reconcile the merchant settlements too. The money that lands in your bank is net of fees and usually batched, so the £4,180 on the statement is not the £4,265 you took on Saturday. If you never split that out, your sales figure and your costs are both wrong.
Two habits are worth more than any feature list. Use a separate business bank account, even as a sole trader where you are not legally required to. And stop using the business card for personal things, because every one of those becomes a question later.
A receipt proves the amount, the date and the VAT
People misunderstand what a receipt is for. The bank statement already proves you spent £96 at a builders' merchant. What it does not prove is what you bought, whether it was for the business, and how much VAT was in it. That is the receipt's job.
If you are VAT-registered, a valid VAT invoice is the thing that lets you reclaim input tax. Without it, HMRC can refuse the claim, and on a busy trade account that is real money across a year. Photograph receipts at the point of sale, in the merchant's car park, before the thermal paper does what thermal paper does. Most accounting apps take a photograph and attach it to the transaction, which means the evidence and the entry live in the same place.
How long you keep it depends on what you are. A limited company must keep its accounting records for a period set by the Companies Act 2006 and, for tax, HMRC expects company records to be kept for six years from the end of the accounting period. A sole trader is expected to keep records for at least five years after the 31 January submission deadline for the relevant return. VAT records run to six years. Payroll records have their own requirements, and National Minimum Wage records must be kept for six years. If you want one rule, keep everything for six years and stop thinking about it.
Making Tax Digital has already decided part of this for you
Making Tax Digital for VAT applies to all VAT-registered businesses. It requires digital record keeping and submission through compatible software, and it requires digital links, which means you cannot retype a figure from one system into another by hand at the end of the chain.
Making Tax Digital for Income Tax began phasing in for sole traders and landlords from April 2026 based on qualifying income, with lower thresholds following in later years. The thresholds and dates have moved more than once, so check where you sit rather than assuming. The direction has not moved: quarterly digital updates are becoming normal for unincorporated businesses, and a January shoebox stops being viable rather than merely unpleasant.
That is the practical argument for software over a spreadsheet. Software costs perhaps £15 to £40 a month for a small firm. A bookkeeper doing a few hours a month costs more and is often worth it, because they catch things you would categorise wrongly and they chase your debtors without being emotionally involved.
The numbers to look at once you have them
Bookkeeping that only produces a tax return is bookkeeping wasted. Once the records are current, four numbers are available to you every month, and they are the ones that decide whether you survive.
- Cash in the bank today, and what is due out in the next four weeks.
- Your debtor list by age, with anything over sixty days circled.
- Gross margin, meaning sales less the direct cost of delivering them, as a percentage, compared with the same month last year.
- Rolling twelve-month turnover, for the VAT registration threshold, which is tested against the previous twelve months at every month end rather than at your year end.
None of those require an accountant. They require the books to be up to date, which is the entire point.
Where this shows up in the game
Business Baron treats record keeping as a live system rather than a menu setting. Let it slip and the effect is not an instant penalty, it is that you stop being able to see things: the debtor going bad, the margin drifting, the rolling turnover creeping towards the threshold. Then an inspector arrives and asks for records covering a specific period, and the grade you get is the grade your habits earned. The free game has no time limit, so there is room to learn this the cheap way.