Question

What is the difference between cash and accrual accounting?

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Answer

When a transaction is recorded. Cash accounting records it when money moves; accrual accounting records it when the economic event happens, regardless of payment.

Cash basis. Income is recorded when received, expenses when paid.

Advantages: simple, matches the bank statement, and requires no judgement. Tax is paid on money actually received, which helps businesses with slow-paying customers.

Disadvantages: it distorts periods badly. Invoicing £50,000 in March and being paid in April makes March look terrible and April excellent, though the work all happened in March. It also hides money owed in both directions, so the accounts say nothing about the business's real position.

Accrual basis. Income is recorded when earned — when the goods are delivered or the service performed — and expenses when incurred, whether or not either has been paid.

This requires two accounts that do not exist under cash basis: receivables (owed to you) and payables (owed by you). It also produces prepayments and accruals — an annual insurance premium paid in January is spread across twelve months, rather than making January look expensive.

The matching principle is the point: costs are recognised in the same period as the revenue they helped generate, so each period shows what actually happened.

Which you must use. Rules vary by jurisdiction and size. In the UK, limited companies must prepare accrual accounts; smaller unincorporated businesses may use the cash basis for tax, subject to conditions and thresholds that change — check current HMRC guidance.

The practical consequence that catches people out. Under accrual accounting, you can owe tax on profit you have not been paid for. A large invoice raised before the year end is taxable income even if the customer pays late or never — which is exactly why bad debt relief exists and why year-end invoice timing is worth thinking about.

Most businesses need both views. Statutory accounts on the accrual basis show performance; a weekly cash forecast shows survival. Running only one is the mistake.

General information, not tax or accounting advice.

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