A write-off in accounting is a formal entry that removes an asset’s recorded value from your books once that asset can no longer be recovered or sold for anything meaningful. The entry drops the asset’s balance to zero (or to whatever small amount it might still fetch) and records the same figure as a loss or expense on the income statement. The point is simple: your records should not claim your business owns or is owed something it will never actually collect or use.
What Kinds of Assets Get Written Off
Four categories cover almost every write-off a business will ever record.
Unpaid Customer Invoices
Accounts receivable are the most common candidates. When a customer stops paying and the account has been delinquent long enough — often 180 days or more — the business concludes the debt is uncollectible. Federal tax law allows a deduction for a debt that becomes wholly worthless during the tax year, and a partial deduction for one that is only partially recoverable.1Office of the Law Revision Counsel. 26 USC 166 – Bad Debts You do not have to sue the customer, but you do need to show that you took reasonable collection steps and that a court judgment would be uncollectible anyway.2Internal Revenue Service. Topic No. 453, Bad Debt Deduction
Inventory
Goods that become obsolete, damaged, or unsellable cannot stay on the books at their original purchase price. Accounting standards require inventory to be reported at the lower of original cost or net realizable value, meaning what a buyer would actually pay minus any costs to complete the sale. A retailer holding electronics several generations behind current technology has to lower the recorded value. When inventory has no remaining value at all, a full write-off is appropriate.
Fixed Assets
Machinery, vehicles, and equipment normally lose value through scheduled depreciation. A write-off comes into play when something unexpected happens: a fire destroys a machine, a vehicle is stolen, a press suffers irreparable failure. If equipment carried at $15,000 is destroyed, you remove the $15,000 from the asset account and record a $15,000 loss. If the asset still functions but has suffered a real decline in usefulness, an impairment test decides whether a partial write-down is enough. You write down to the impaired value if you plan to keep using it, and to fair value (which may be zero) if you don’t.
Intangible Assets
Patents, trademarks, and similar intangibles can also lose their value. A court invalidating a patent you paid $50,000 for, or a market shift that leaves a trademark worthless, forces the same recognition: the investment comes off the balance sheet and lands on the income statement as a loss.
Write-Off vs. Write-Down
A write-down reduces an asset’s recorded value by part of its balance to reflect a decline in worth. A write-off removes the entire remaining balance. If a warehouse floods and inventory is damaged but still sellable at a discount, you write it down to that reduced figure. If the goods are a total loss, you write them off. Both hit the income statement as a loss or expense, but a write-down leaves residual value on the balance sheet while a write-off does not.
The Two Methods for Recording Bad Debts
There are two ways to record a bad-debt write-off, and the right one depends on whether you are preparing financial statements or a tax return.
The Allowance Method
Under generally accepted accounting principles, businesses that regularly extend credit use the allowance method. At the end of each reporting period, you estimate how much of your outstanding receivables will likely go uncollected — based on historical experience, current conditions, and reasonable forecasts — and record that estimate as an expense.3FASB. Credit Losses The entry debits Bad Debt Expense and credits Allowance for Doubtful Accounts, a contra-asset that offsets receivables on the balance sheet. When a specific invoice is later confirmed uncollectible, you debit Allowance for Doubtful Accounts and credit Accounts Receivable. Because the expense was already recognized in the period the revenue was earned, this approach matches costs to related income.
The Direct Write-Off Method
The direct write-off method waits until a specific debt is identified as worthless, then debits Bad Debt Expense and credits Accounts Receivable. It is simpler, but it delays expense recognition, which is why GAAP does not accept it for financial statements. The IRS, however, requires this method for federal income tax reporting.2Internal Revenue Service. Topic No. 453, Bad Debt Deduction Many businesses keep their books using the allowance method and then adjust when preparing their tax return.
How the Journal Entry Works
The mechanics stay consistent across asset types. Identify the account affected. For a receivable, pull an aging report to confirm how long the debt has been outstanding. For a physical asset, inspect it and confirm the damage, loss, or obsolescence. Prepare a memo detailing the original cost or invoice amount, any accumulated depreciation, the reason the asset became worthless, and evidence of collection efforts where relevant, and get management approval before booking anything.
Then post the entry. Debit the appropriate expense or loss account — Bad Debt Expense for a receivable, Loss on Disposal for a fixed asset — and credit the corresponding asset account. Update the individual customer record or inventory record to match, so the subsidiary ledger agrees with the general ledger.
What Happens If a Customer Pays After the Write-Off
Sometimes a customer pays an invoice you already wrote off. Under the allowance method, two entries are needed. First, reinstate the receivable by debiting Accounts Receivable and crediting Allowance for Doubtful Accounts. Second, record the payment by debiting Cash and crediting Accounts Receivable. Don’t shortcut by crediting Bad Debt Expense; the original estimate belonged to a prior period.
Under the direct write-off method, the recovery is typically recorded as income in the period the payment arrives. If you claimed a bad debt deduction on a prior year’s tax return and later recover some or all of that amount, you generally have to report the recovered amount as income in the year you receive it.
Tax Rules That Apply
Bad Debts
A business bad debt is a loss from a debt created or acquired in your trade or business that has become partly or wholly worthless. The IRS allows a deduction for the worthless portion, but only if the amount owed was previously included in your gross income.2Internal Revenue Service. Topic No. 453, Bad Debt Deduction The deduction has to be taken in the year the debt becomes worthless; you cannot carry it back.
Sole proprietors deduct business bad debts on Schedule C of Form 1040. Other business entities report the deduction on their applicable business income tax returns. Nonbusiness bad debts (personal loans that go bad) are treated differently — as short-term capital losses reported on Form 8949, subject to capital loss limitations.1Office of the Law Revision Counsel. 26 USC 166 – Bad Debts
Casualty and Theft Losses
When a business asset is destroyed by a casualty (fire, storm, flood) or stolen, the loss is generally deductible under federal tax law to the extent it is not compensated by insurance.4Office of the Law Revision Counsel. 26 U.S. Code 165 – Losses You have to establish that the event occurred, that you owned the property, that the loss came directly from the event, and whether an insurance claim exists with a reasonable expectation of recovery. Valuing the loss usually means determining the difference in fair market value before and after the event. An appraisal is the standard method, though the cost of necessary repairs can serve as a measure of the decline if the repairs bring the property back to its pre-casualty condition.5Internal Revenue Service. Publication 547, Casualties, Disasters, and Thefts
Disposal of Business Property
When you write off depreciable business property through abandonment, destruction, or a sale at a loss, the transaction is reported on Form 4797. A qualifying abandonment loss goes in Part II. Dispositions of depreciable tangible property sold at a loss are reported in Parts II and I.6Internal Revenue Service. Instructions for Form 4797, Sales of Business Property
Documentation and How Long to Keep It
Good records are what separates a legitimate write-off from one that gets disallowed. For every entry, keep the original purchase or invoice date, the cost basis, any accumulated depreciation, and the specific reason the asset became worthless or uncollectible. For bad debts, keep copies of the original invoices, correspondence with the debtor, and notes on what you tried in collections.
The IRS wants records supporting a bad debt deduction kept for seven years from the date you filed the return claiming it. For other write-offs, the general retention period is three years, extended to six years if there is any risk that unreported income exceeds 25% of the gross income shown on your return.7Internal Revenue Service. How Long Should I Keep Records
The Effect on Your Books and Your Tax Bill
A write-off hits two statements. On the income statement, expenses go up (through Bad Debt Expense, a loss account, or an increase to Cost of Goods Sold for inventory), which lowers net income for the period. On the balance sheet, the asset shrinks or disappears, which lowers total assets and, through reduced retained earnings, lowers equity as well.
Because a write-off reduces taxable income, it also reduces your tax liability for the year. The actual savings track your marginal rate. A business in the 22% bracket that writes off $10,000 in bad debt sees its federal tax bill drop by roughly $2,200. That is why timely, well-documented write-offs are worth the effort: the entry that cleans up your books also lowers what you owe.