What Is Bad Debt?
Bad debt is an amount owed to a company that the company has concluded it will probably never collect. When a business sells goods or services on credit, it records the unpaid amount as accounts receivable, which is an asset. If customers stop paying and recovery looks unlikely, that asset no longer reflects its real value, so the amount is removed from the books and recorded as an expense or loss.
Bad debt also appears in lending. A bank that cannot recover a loan records the unpaid balance as a loss. Lenders often use the term charge-off when an account is formally written off.
How Bad Debt Is Recorded
Under the allowance method, which is the approach generally required under accrual accounting for financial reporting, a company estimates in advance how much of its receivables may go unpaid. That estimate is held in an allowance for doubtful accounts, a contra-asset account that reduces the reported value of receivables. When a specific balance is later confirmed as uncollectible, it is written off against the allowance.
A simpler direct write-off method records bad debt only when a specific account is judged uncollectible. It is easier to apply, but it can misstate income in the period the sale was made, which is why accounting standards generally prefer the allowance method for most businesses.
For example, suppose a supplier sells on credit to several customers, and one of them closes its doors with an unpaid invoice. The supplier may write off that invoice against its allowance. The reported profit for that period then reflects the loss, while the earlier estimate had already spread the expected cost across the reporting period.
Why Bad Debt Matters to Investors
Bad debt reduces reported profit and the value of assets, so it affects both the income statement and the balance sheet. A rising level of bad debt relative to sales can signal weaker customer credit quality, economic stress, or looser lending standards. Investors often track bad debt over several periods and compare it with industry peers.
Because the allowance depends on management estimates, changes to it can shift reported earnings from one period to another. The notes to financial statements usually explain how a company estimates its allowance, which helps readers judge how much weight to give the reported figures.
Updated October 21, 2026. For general education only; not financial, tax or legal advice.