Allowance for Doubtful Accounts: % of Sales vs Aging
Tutorly · Financial Accounting
Allowance for Doubtful Accounts: % of Sales vs Aging
There are two allowance for doubtful accounts methods. The percentage-of-sales method estimates bad debt expense directly (a % of credit sales) and ignores the existing allowance balance. The aging / percentage-of-receivables method estimates the ending allowance you need, then books the difference. Same data, two answers — the trick is knowing which one targets the expense and which targets the balance.
The shared data
A company has $800,000 of credit sales, $120,000 of accounts receivable at year-end, and the Allowance for Doubtful Accounts already has a $1,000 credit balance.
Method 1 — percentage of sales (income-statement approach)
Estimate 1.5% of credit sales as the expense, regardless of the existing balance:
| Bad debt expense | 12,000 | |
| Allowance for doubtful accounts | 12,000 |
The allowance becomes $1,000 + $12,000 = $13,000. The expense is the target; the ending balance just follows.
Method 2 — aging (balance-sheet approach)
Estimate the required ending allowance from an aging schedule, then adjust to it:
| Age | Balance | % uncollectible | Estimated |
|---|---|---|---|
| Current | 80,000 | 2% | 1,600 |
| 1–30 days | 24,000 | 10% | 2,400 |
| 31–90 days | 12,000 | 25% | 3,000 |
| Over 90 days | 4,000 | 65% | 2,600 |
| Required allowance | 120,000 | 9,600 |
Because the allowance already holds $1,000, you only top it up by the difference: $9,600 − $1,000 = $8,600.
| Bad debt expense | 8,600 | |
| Allowance for doubtful accounts | 8,600 |
% of sales
Expense booked directly; ending allowance = $13,000.
Aging
Expense = target $9,600 − existing $1,000.
Mixing up the two methods? A tutor can drill both on your own problems until the difference is obvious — book a session.
The mistake to avoid
The classic error is applying the existing $1,000 balance under % of sales (you don’t — that method books the full estimate as expense) or ignoring it under aging (you must — aging adjusts to the target). One method targets the expense; the other targets the ending balance.
Frequently asked questions
How do you calculate allowance for doubtful accounts?
Either estimate bad debt expense as a percentage of credit sales (income-statement method) or estimate the required ending allowance from an aging schedule and book the difference (balance-sheet method).
What’s the difference between the two methods?
Percentage-of-sales targets the expense and ignores the existing allowance; aging targets the ending allowance balance and adjusts to it from whatever’s already there.
Do you consider the existing allowance balance?
Only under the aging method. Percentage-of-sales books the full estimate as expense regardless of the prior balance.
Which method is more accurate?
Aging usually gives a better balance-sheet figure because it looks at the actual receivables outstanding; many companies use sales for interim periods and aging at year-end.
Receivables on your next midterm?
Book 1-on-1 or small-group tutoring and we’ll work both methods until they’re automatic.
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