“There is money in my account, so why is my profit different?” It is a common sole trader question. Your bank balance is the cash sitting in one account on one date. Your business result measures income and relevant costs over a period. Those figures answer different questions.
Here is a simple way to spot what may be causing the gap before your accounts are prepared.
1. The bank account includes money that is not a sale
You might transfer personal savings into your business account or receive a loan. The balance rises, but that does not mean the business made a sale. Label transfers and finance receipts clearly in your records.
2. You have taken money out for yourself
A sole trader may transfer money to a personal account. The business bank balance falls, but the transfer itself is not the same thing as an ordinary business expense. Keep drawings separate from supplier payments.
3. Some sales and costs have different payment dates
If you invoice a customer near year end, the timing of recognition can depend on the accounting basis you use. Under cash basis, records generally follow when money is received or paid. Traditional accounting can treat unpaid invoices and bills differently. Read HMRC’s cash-basis overview and record-keeping guidance for the details.
4. Platform fees hide part of the sale
Suppose a customer pays £50 and a booking platform deducts £5 before sending £45 to your bank. Your bank shows only £45. Keep the platform statement so the full transaction can be understood. This matters for drivers, beauty professionals, online sellers and other sole traders paid through apps.
5. Not every purchase is treated the same way
Some payments may be personal, partly personal, or related to equipment. You cannot determine their treatment solely from the bank description. Retain invoices and describe what each item was for. HMRC provides an overview of self-employed expenses and separate guidance on equipment costs.
A five-minute check you can do today
- Choose one recent month of bank transactions.
- Mark customer receipts and match them to invoices or platform reports.
- Mark supplier payments and find the supporting receipts.
- Identify personal transfers, loans and unexplained items.
- Check whether your records reconcile to the opening and closing bank balance.
Do not force an unexplained difference into a miscellaneous category. A question list is more useful than a guessed entry.
Get clearer sole trader accounts
Real Key Accountancy can help organise bookkeeping, reconcile accounts and prepare non-statutory sole trader accounts within its approved scope. Explore our services, bookkeeping support and sole trader accounts support. Book a free 15-minute check to discuss the records you have.
General information checked September 2026. Accounting and tax treatment depends on individual circumstances.