A bad debt write-off journal entry takes one of two forms. If you use the direct write-off method, you debit Bad Debt Expense and credit Accounts Receivable for the uncollectible balance. If you use the allowance method, you debit Allowance for Doubtful Accounts and credit Accounts Receivable instead, because the expense was already booked earlier when you estimated the reserve. Both entries remove the customer’s balance from your books; they differ in when the hit to income happens and which accounts absorb it.
Which Method You Should Be Using
The direct write-off method records bad debt expense only when you confirm a specific account is worthless. It’s simple, and it’s what the IRS effectively requires for tax purposes, since the tax code repealed the reserve method for most taxpayers in 1986. But it violates the matching principle: the expense often lands in a different period than the sale it relates to. GAAP does not permit it on audited financial statements.
The allowance method estimates uncollectible accounts in the same period you record the related credit sales. You maintain a contra-asset account, Allowance for Doubtful Accounts, that reduces gross receivables to their net realizable value. Because the expense is recognized up front, the later write-off of a specific account is just a balance-sheet reclassification with no income-statement impact. This is the GAAP-compliant approach and what most mid-size and larger businesses use.
Practically, that means small businesses that don’t produce audited financials often live on the direct write-off method and reconcile to tax rules at year-end. Everyone else keeps two sets of numbers in mind: GAAP timing for the books, specific-charge-off timing for the return.
Direct Write-Off Entries
Recording the Write-Off
When a customer’s balance is confirmed uncollectible, post a single entry. Suppose a customer owes $4,000 and files for bankruptcy on October 15:
- Debit Bad Debt Expense $4,000
- Credit Accounts Receivable (Customer Name) $4,000
Net income drops by $4,000 in the current period and the customer’s receivable balance goes to zero. If you sold the goods last year and the customer defaults this year, the expense shows up a full year late. That mismatch is the trade-off for the simpler bookkeeping.
Recording a Recovery
If the customer later pays some or all of the written-off amount, you need two entries. Suppose $2,500 of the $4,000 is recovered the following February. First, reverse the write-off for the amount recovered:
- Debit Accounts Receivable (Customer Name) $2,500
- Credit Bad Debt Expense $2,500
Then record the cash:
- Debit Cash $2,500
- Credit Accounts Receivable (Customer Name) $2,500
The reversal credits Bad Debt Expense directly, reducing the current period’s expense. There is no allowance account to touch. Reinstating the receivable before collecting the cash keeps the customer’s subsidiary ledger accurate.
Allowance Method Entries
The Period-End Estimation Entry
At the end of each accounting period, estimate how much of your outstanding receivables won’t be collected and record an adjusting entry. The debit hits the income statement; the credit builds the reserve on the balance sheet. If your December 31 estimate calls for $15,000 in expected losses:
- Debit Bad Debt Expense $15,000
- Credit Allowance for Doubtful Accounts $15,000
This entry does not touch Accounts Receivable. It creates a cushion that sits on the balance sheet, ready to absorb specific write-offs as they occur.
Writing Off a Specific Account
When you confirm a particular customer won’t pay, draw against the reserve. Suppose a customer’s $1,800 balance is confirmed uncollectible on March 15:
- Debit Allowance for Doubtful Accounts $1,800
- Credit Accounts Receivable (Customer Name) $1,800
This entry does not affect Bad Debt Expense or net income. The expense was already recognized in the prior estimation entry. The write-off moves the loss between two balance-sheet accounts: gross receivables drop by $1,800, the allowance drops by $1,800, and net receivables stay the same.
Recording a Recovery
When a customer pays on an account you’ve already written off, reverse the write-off first, then record the cash. Suppose you recover $750:
- Debit Accounts Receivable (Customer Name) $750
- Credit Allowance for Doubtful Accounts $750
Then:
- Debit Cash $750
- Credit Accounts Receivable (Customer Name) $750
The net result is more cash and a replenished allowance. Bad Debt Expense is never touched. If only part of the original balance is recovered, use the recovered amount in both entries and leave the remainder written off.
When the Allowance Runs Dry
If actual write-offs during the period outpace the allowance, the account flips to a debit balance. That’s a signal your estimates have been too optimistic. The debit balance doesn’t block you from posting more write-offs, but at period-end your adjusting entry has to cover both the deficit and the target reserve. Say your aging schedule calls for a $10,000 credit balance in the allowance, but write-offs have left it at a $2,000 debit balance. The adjusting entry is $12,000: $2,000 to erase the deficit plus $10,000 to build the reserve.
How to Size the Allowance
Two estimation techniques dominate practice. The percentage-of-sales approach applies a flat rate to net credit sales for the period. If your historical loss rate is 1% and you generated $500,000 in net credit sales, you’d record $5,000 in bad debt expense regardless of what’s already sitting in the allowance. It’s fast, but the allowance balance can drift from reality over time.
The aging-of-receivables approach sorts outstanding receivables by how long they’ve been overdue and applies escalating loss percentages to each bucket. A common pattern:
- Current (not yet due): 1–2% estimated loss
- 1–30 days past due: 3–5%
- 31–60 days past due: 10–15%
- 61–90 days past due: 25–35%
- Over 90 days past due: 50% or higher
The total across buckets gives you the target balance for the allowance. You then adjust for whatever balance already sits there. If aging says you need $8,000 in the allowance and there’s already a $1,000 credit balance, your adjusting entry is $7,000. Auditors tend to prefer the aging method because it examines the composition of your receivables directly.
One boundary worth flagging if you produce GAAP financials: the current expected credit losses standard (CECL, codified in ASC 326) requires estimates to reflect the entire expected life of the receivable using forward-looking information, not just historical loss experience.1Financial Accounting Standards Board. FASB ASC Topic 326 Financial Instruments Credit Losses You can still use an aging schedule, but the loss rates must be adjusted for expected changes in conditions like unemployment or shifts in your customer base. The journal entry itself is unchanged.
The Tax Side Does Not Follow Your Books
The IRS does not accept the allowance method. When Congress repealed the reserve method for tax purposes in 1986, it left only the specific charge-off approach: you deduct a bad debt in the year it becomes worthless, not when you estimate it might become worthless.2Office of the Law Revision Counsel. 26 USC 166 Bad Debts For any business using the allowance method on its books, this creates a timing difference: the GAAP expense hits when you estimate, the tax deduction hits later when a specific account is confirmed worthless.
Business bad debts can be deducted in full or in part. Partial worthlessness counts. If you can collect some but not all of what you’re owed, you deduct the uncollectible portion in the year you charge it off.2Office of the Law Revision Counsel. 26 USC 166 Bad Debts The IRS expects you to show that you took reasonable steps to collect before claiming the debt was worthless. A court judgment is not required, but you do need to demonstrate that a judgment would have been uncollectible or that other collection efforts failed.3Internal Revenue Service. Topic No. 453 Bad Debt Deduction Take the deduction in the year the debt goes worthless; claiming it a year late means amending your return.
Documentation Behind the Entry
Posting the entry is the easy part. For every account you write off, keep a file with the original invoice or agreement, a record of your collection attempts (demand letters, emails, phone logs), and the reason you concluded the debt was uncollectible. A bankruptcy notice ties the story together when applicable. If you simply exhausted collection efforts, document the timeline and the final communication.
For the allowance estimate, document the method used, the data inputs, and any adjustments you made for changing economic conditions. If your actual write-offs run consistently above or below your estimates, recalibrate before an auditor asks why you haven’t.