What is the difference between cash-basis and traditional accounting for a sole trader?

Under cash basis, the starting point is money received from customers and money paid for business expenses. Traditional accounting, also called accruals accounting, looks at income earned and costs relating to the period, even when payment happens later. For example, an unpaid customer invoice can affect traditional accounting profit before the cash arrives. That difference can change when taxable profit arises, rather than whether a genuine sale is ultimately taxable. Neither approach makes every bank payment an allowable expense. Private spending, transfers and asset purchases still need the correct treatment. Keep the accounting method separate from simply looking at your bank balance.

Cash basis became the default for eligible unincorporated businesses from 6 April 2024, with an option to use traditional accounting instead. It is commonly relevant to sole traders and partnerships without corporate partners, but there are exclusions. Limited companies cannot use this Income Tax cash basis regime. Do not assume an old turnover limit or restriction still applies without checking the current rules. Also distinguish this choice from the VAT Cash Accounting Scheme: they serve different taxes and have separate eligibility conditions. Your business structure, activities and reporting needs should be checked before deciding which basis to use on the tax return.

Cash basis can suit straightforward businesses where customers pay promptly and there is little stock or complexity. Traditional accounting can provide a clearer view when unpaid invoices, supplier balances, stock or unfinished work are significant. A lender may also want accounts prepared on that basis. Imagine strong cash receipts from last year's work while current sales are falling: a cash report alone may obscure the change. Conversely, accounting profit can look healthy while customers have not paid. Use receivables, payables and cash forecasts alongside the chosen tax basis. The most useful reporting approach should explain performance and payment timing together for your decisions.

Switching methods can require adjustments so income and costs are neither missed nor counted twice. Review outstanding invoices, unpaid bills, stock, earlier deductions and assets before changing the tax calculation. A setting in bookkeeping software does not by itself complete the tax transition. Keep a record of the basis used and the adjustments supporting the first return after a change. CASS can help compare the practical effects and explain the records required within the agreed service. Make the choice with your tax position and reporting needs in mind, rather than selecting whichever report shows the smallest profit at one particular moment.