Common bookkeeping mistakes small businesses make (and how to avoid them)

Most bookkeeping problems we see aren't caused by complicated transactions — they're caused by small habits that compound over months. Here are the ones that come up most often.

Mixing personal and business spending

Using one account for both makes reconciliation slower and expenses harder to justify if HMRC ever asks. A dedicated business account, even for sole traders, pays for itself in time saved.

Leaving receipts until year-end

Batch-processing a year of receipts at once is where errors and missed expenses creep in. Logging transactions weekly, or using an app to photograph receipts as they happen, keeps things accurate.

Not reconciling bank feeds regularly

An unreconciled bank feed hides problems — duplicate payments, missed income, or categorisation errors — until they've built up significantly.

Our advice

Most of these issues are prevented by a simple monthly rhythm rather than more complex software. We set that rhythm up for clients as part of our bookkeeping service, so it happens whether or not you remember to think about it.