Bookkeeping Basics: The Minimum a Small Business Needs to Get Right

Bookkeeping is recording what came in and what went out, in a form you can rely on later. It is not intellectually demanding and it is where a great deal of avoidable cost and stress originates, almost entirely because it gets postponed.

Separate Business From Personal First

A dedicated business bank account is the foundation of everything else. Mixing personal and business transactions means every reconciliation involves deciding what belongs where, months after the fact. For a limited company the separation is not optional — the company’s money is not yours.

Record as You Go, Not at the Year End

The single biggest determinant of whether bookkeeping is painful is frequency. Half an hour weekly is trivial. Twelve months reconstructed in March is a genuinely miserable job that produces worse records and a larger accountancy bill. That gap matters more than it used to — anyone inside Making Tax Digital for Income Tax files four times a year, and quarterly deadlines punish a shoebox in a way one annual return never did.

Keep the Evidence

Receipts, invoices, bank statements and contracts all need retaining, and there are minimum periods for how long. Photographing receipts as you receive them solves the faded-thermal-paper problem entirely, and most accounting software will store the image against the transaction.

Understand Cash Basis Versus Accruals

Recording income when money arrives is the cash basis. Recording it when the work is done or invoiced is accruals. Smaller unincorporated businesses may be able to use the cash basis, which is simpler; companies generally prepare accounts on an accruals basis. Which applies affects when income and costs land, so know which you are using.

Reconcile Against the Bank

Regularly match your records to the bank statement. This catches duplicated entries, missing transactions, unrecorded fees and — occasionally — payments you never received. Records that have never been reconciled are an estimate rather than a record.

Track Who Owes You and Who You Owe

An aged debtor list showing which invoices are outstanding and for how long is the foundation of credit control. The equivalent for suppliers stops you missing payments and damaging terms. Both take moments to maintain if the underlying records are current.

Set Money Aside for Tax as You Earn It

VAT collected and tax owed are not working capital. The most reliable protection is a second account that receives a transfer every time money comes in. Businesses that spend tax money and then have to find it are among the most common casualties, and VAT registration makes this more pressing rather than less.

Use Software, but Understand What It Is Doing

Modern accounting packages import bank transactions and suggest categories, which saves considerable time and produces confident-looking nonsense if the categories are wrong. Review what it has assumed rather than approving in bulk.

Reconcile Card and Platform Payouts

Payment processors and marketplaces usually pay out net of fees, and sometimes in batches covering several sales. Recording only the amount that arrives understates both revenue and costs. Match each payout to the underlying transactions so the fees appear as the expense they are.

Know Your Deadlines

Filing dates for accounts, confirmation statements, tax returns and VAT are fixed and penalties are automatic. Put every one in a calendar with a reminder well ahead. Late filings at Companies House are public and affect your business credit profile, which makes them more expensive than the penalty alone.

Chart of Accounts: Keep It Simple

The list of categories you post transactions to should be short enough that you can remember it and consistent enough that comparisons over time mean something. Twenty well-chosen categories are more useful than a hundred that get used inconsistently.

Handle Mileage and Home Use Properly

Vehicle use and working from home are both legitimate costs and both need a defensible basis. Flat-rate methods exist and are usually far simpler than apportioning actual costs. Whichever you use, record it as you go — a mileage log reconstructed later is neither accurate nor convincing.

Reconcile Petty Cash and Card Payments

Small cash purchases and personal cards used for business expenses are where records most often break down. Either stop using them for business, or capture every one immediately. Unrecorded costs are deductions you have paid for and cannot claim.

Back Up and Keep Access

Records held only in one person’s email, or in software nobody else can access, are a risk. Make sure more than one person can reach the accounting system and that data can be exported. This matters more than it seems until the moment it matters a great deal.

Review Monthly, Not Annually

Bookkeeping is only worth doing if someone reads the output. A short monthly look at income, costs, debtors and the bank position turns record-keeping from a compliance chore into management information, which is the entire point of doing it.

Date Everything by When It Happened

Transactions belong in the period they occurred, not the period you got round to entering them. Posting a December invoice in February distorts both months and makes any comparison meaningless. If you are catching up, date entries correctly rather than by entry date.

Record Owner Transactions Properly

Money you put into the business and money you take out both need recording, and in a company they run through a director’s loan account. Informal transfers that nobody categorises are the most common cause of a messy year end and of unexpected tax charges.

Agree Who Does What

Where a bookkeeper, an accountant and the owner are all involved, gaps appear at the boundaries — nobody chases the missing receipts, nobody reconciles the card account. Write down who is responsible for each task and how often, even if that list is short.

Stock and Work in Progress

If you hold stock or have jobs part-completed at the year end, both need valuing, and both affect reported profit. Businesses that ignore them get accounts that do not reflect reality and a tax position that may be wrong in either direction.

When to Bring in Help

What the Records Feed Into

Bookkeeping exists so that something else can be produced from it. For a limited company that is largely the corporation tax return, and the quality of the records decides how painful that is.

A bookkeeper is cheaper than an accountant for routine recording, and using one frees your time for work that earns. The threshold is usually when transaction volume makes weekly recording a chore rather than a task — but even then, understanding your own numbers remains your job rather than theirs.