What's the difference between cash and accrual accounting?

Define cash accounting by when cash moves and accrual by when revenue is earned and costs incurred. Give a December project paid in January, note that public companies must use accrual, and tie it to the cash flow statement.

How a 90-point answer starts

Cash accounting records revenue when the cash comes in and expenses when the cash goes out. Accrual accounting records revenue when it's earned and expenses when they're incurred, matched to the revenue they help produce, regardless of when the cash moves.

See the full answer, the 50 and 70 versions, and what moves each score up.

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The numbers, step by step

The insurance example from the answer: $1,200 paid on January 1 for twelve months of cover, on an accrual basis.

Expense each month$1,200 ÷ 12
$100
Expensed by March 31$100 × 3 months
$300
Still a prepaid asset$1,200 − $300
$900

What the interviewer listens for

  • Do you define both by timing: when cash moves versus when it's earned or incurred?
  • Do you give an example with numbers on the revenue side and the cost side?
  • Do you know public companies must use accrual accounting?
  • Do you connect accrual profit to the cash flow statement?

Common mistakes

  • Saying accrual accounting ignores cash.Cash is still recorded when it moves, just not as revenue or expense at that moment.
  • Recognizing revenue when a contract is signed.On an accrual basis it's earned when the company delivers what it promised.
  • Telling the interviewer public companies can choose cash accounting.US GAAP and IFRS both require accrual.
  • Stopping at the definitions without linking them to the cash flow statement, which reconciles accrual profit to cash.

Likely follow-ups

  • Where do accruals sit on the balance sheet?In receivables, prepaid expenses, accrued expenses and deferred revenue. Each holds the gap between when something is earned or incurred and when the cash moves.
  • Which basis tells you more about a business?Accrual for how it performed in the period, cash for whether it can pay its bills. I look at both, and a widening gap between net income and operating cash flow gets a question from me.
  • The consultant's client never pays. What happens under accrual accounting?Under the allowance method the company has already booked an estimate of bad debts as an expense. Writing off this receivable uses up that allowance, so profit took the hit when the estimate was made.

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