Accounts Receivable and the Allowance Method: Aging Schedules, Write-Offs, and Recoveries
Every business that sells on credit faces the reality that some customers will not pay. GAAP requires the allowance method — recording an estimate of uncollectable accounts before any specific account is identified as bad — to ensure that receivables on the balance sheet reflect their net realisable value. This guide covers both estimation approaches, every journal entry in the lifecycle of a bad debt, and the exam questions that test this topic most frequently.
Why GAAP Requires the Allowance Method
The allowance method is required by GAAP (and more recently by the CECL standard, ASU 2016-13) because it applies the matching principle: bad debt expense should be recognised in the same period as the related credit sale, not in the period when a specific account is eventually identified as uncollectable. Recording bad debt expense only when a specific account fails would delay expense recognition — sometimes by years — producing an overstatement of assets and income in the sale period.
The allowance for doubtful accounts is a contra-asset account — it carries a credit balance and reduces accounts receivable from gross to net realisable value on the balance sheet: Gross AR − Allowance = Net AR. It is an estimate, revised each period based on current information about credit conditions and customer quality. See the full treatment of accounts receivable in the AR and AP complete guide.
Percentage of Sales Method
The percentage of sales (or income statement) approach estimates bad debt expense as a percentage of credit sales for the period. It focuses on matching the expense to the sales that created it, without concern for the current balance in the allowance account.
Bad debt expense = $500,000 × 1.5% = $7,500
DEBIT Bad Debt Expense $7,500
CREDIT Allowance for Doubtful Accounts $7,500
This method is simple and matches well with the income statement, but it does not verify that the allowance balance on the balance sheet is reasonable. If many accounts are actually written off, the allowance balance can become inadequate over time without a separate check.
Aging of Accounts Receivable Method
The aging analysis (balance sheet approach) categorises each outstanding receivable by how long it has been unpaid and applies progressively higher uncollectable rates to older buckets. The result is the required ending balance in the allowance account — the journal entry is the plug needed to bring the current allowance to the required level.
| Age Bucket | AR Balance | Est. Uncollectable % | Required Allowance |
|---|---|---|---|
| Current (0–30 days) | $180,000 | 1% | $1,800 |
| 31–60 days past due | $42,000 | 5% | $2,100 |
| 61–90 days past due | $18,000 | 15% | $2,700 |
| Over 90 days past due | $8,000 | 40% | $3,200 |
| Total | $248,000 | $9,800 |
If the allowance account currently has a credit balance of $3,500, the journal entry is:
DEBIT Bad Debt Expense $6,300
CREDIT Allowance for Doubtful Accounts $6,300
If the allowance already had a debit balance of $1,200 (from heavy write-offs), the needed journal entry would be $9,800 + $1,200 = $11,000 to achieve the required ending balance. This "plug" calculation is the most common exam question on the aging method.
The Journal Entries: Provision, Write-off, Recovery
Write-off: When a specific account is determined to be uncollectable, it is removed from both AR and the allowance. This entry has no income statement effect — the expense was already recognised when the allowance was established.
CREDIT Accounts Receivable — Smith Co. $1,500
Recovery: If a previously written-off account later pays, two entries are required: (1) reverse the write-off to reinstate the receivable and the allowance; (2) record the cash collection.
Step 2: DEBIT Cash $1,500 / CREDIT AR — Smith Co. $1,500 (collect)
Why two entries instead of just debiting Cash? The reversal creates a complete audit trail — it shows that Smith Co. paid despite the write-off, which updates their credit history and the allowance balance correctly.
Maintaining the Allowance Balance
A healthy allowance balance is neither too high (inflating bad debt expense and understating net AR) nor too low (understating future losses and overstating net AR). Management's estimate should be reviewed quarterly and updated for changes in: economic conditions, customer credit quality, historical collection patterns, and the composition of the AR aging. Auditors scrutinise the allowance closely because it is one of the most judgement-driven estimates on the balance sheet.
The Direct Write-Off Method: Why It Fails
The direct write-off method records bad debt expense only when a specific account is identified as uncollectable — no allowance account, no estimate. While simpler, it violates the matching principle and overstates assets and net income in the sales period. GAAP prohibits it for financial reporting; it is permissible only for tax purposes under the IRC.
Analysing the Allowance on Exam Questions
The most common exam question type: "Given the beginning allowance balance, write-offs during the year, recoveries, and estimated bad debt expense, what is the ending allowance balance?" Set up a T-account for the Allowance account. Credits increase it (bad debt expense provision, recoveries-reinstatement). Debits decrease it (write-offs). Solve for the ending balance. This T-account approach makes the solution systematic and error-resistant.
Accounts Receivable Questions — Practice Every Scenario
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