Allowance for Doubtful Accounts
Estimating bad debts to reflect business reality
Why This Matters
A company sells $100,000 of products on credit during the year.
Question: How much of that $100,000 will actually be collected?
Option A: Optimistic View
"We'll collect all $100,000"
Revenue: $100,000
Accounts Receivable: $100,000
Option B: Realistic View
"Based on history, 5% of credit sales never get collected"
Expected collection: $95,000
Write-off: $5,000 (bad debt)
Which is accurate? Option B. Because the matching principle says: Match the cost of making a sale (including the cost of never collecting it) to the period you earned the revenue.
Allowance for doubtful accounts is the realistic bridge between optimistic accounting and actual business reality.
What Is Bad Debt?
Bad Debt = Receivables that won't be collected.
Reasons why customers don't pay:
- Customer goes bankrupt
- Customer can't afford to pay
- Customer disputes the sale
- Customer disappears
- Fraud or theft
- Natural disaster prevents payment
The reality: In any business extending credit, some customers won't pay. It's not a question of IF, it's a question of HOW MUCH.
The Problem: Timing of Bad Debt Recognition
When does bad debt become clear?
January 2026: Company sells $100,000 on credit
December 2026: Year-end, close the books
Question: Should we expect to collect all $100,000?
Wrong Option: Wait until 2027 to see who doesn't pay. (Risky, inaccurate)
Right Option: Estimate in 2026 how much won't be collected. (Matching principle)
The problem: If we wait, 2026 financial statements are overstated (too much profit), and 2027 statements are understated (too much loss). Matching principle requires we estimate.
Two Methods: Estimating Bad Debt
Method 1: Percentage of Sales
Income Statement Focus
Concept: Estimate bad debt as a percentage of sales.
Sales: $1,000,000 | Rate: 2%
Estimate: $20,000
Bad Debt Expense $20k
Allowance for Doubtful $20k
- • Simple
- • Based on actual sales
- • Matches period perfectly
- • Ignores AR aging
- • Doesn't consider customer risk
Method 2: Aging of Receivables
Balance Sheet Focus
Concept: Estimate bad debt based on how old receivables are. Older = riskier.
| Age | Bal | Rate | Allow |
|---|---|---|---|
| 0-30 | $300k | 5% | $15k |
| 30-60 | $150k | 15% | $22.5k |
| 90+ | $50k | 70% | $35k |
Total Required: $102.5k
If current allowance is $85k, adjust by +$17.5k.
- • Based on actual AR
- • More accurate risk profile
- • Balance sheet focused
- • Time-consuming
- • Requires detailed data
How Allowance Works: The Accounting
The Allowance as a Contra-Asset
Allowance for Doubtful Accounts is a contra-asset account (reduces assets).
Current Assets:
Gross receivables: $600,000 (what customers owe). Net receivables: $515,000 (realistic value). This is more honest than showing $600,000.
Direct Write-Off Method (Less Preferred)
Only recording bad debt when a specific customer proves uncollectible. PROBLEM: This violates matching principle.
GAAP prefers the allowance method. The direct method fails to match revenue to expense, though it's sometimes acceptable for immaterial amounts.
Writing Off Uncollectible Accounts
When a Customer Proves Uncollectible
Scenario: Customer ABC owes $10,000, but goes bankrupt.
Impact on statements:
- • AR: $600k → $590k
- • Allowance: $85k → $75k
- • Net AR: $515k → $515k (NO CHANGE!)
- • Profit: NO IMPACT (expense already recorded)
Recovery (Rare Case)
Scenario: Two years later, a written-off customer actually pays.
1. Reverse write-off:
AR - Customer $5,000
Allowance $5,000
2. Record collection:
Cash $5,000
AR - Customer $5,000
Real-World Example: The Full Cycle
2026 (Year of Sale)
Activity:
- Net Sales: $1,000,000
- Historical bad debt rate: 3%
Action:
Record estimate: $30,000 Bad Debt Exp.
Income Statement 2026
Gross Profit: $400,000
Bad Debt Exp: ($30,000)
Net Income: $370,000
2027 (Collections)
Activity:
- Collect $185k from 2026 sales
- Write-off $15,000 (uncollectible 2026 sales)
- New Sales: $950,000 (New Exp: $28.5k)
2027 Allowance T-Account
Red Flags: When Allowances Are Manipulated
1. Allowance Too Low Compared to Industry
If industry average is 3-5% but company reports 1%, they are either incredibly lucky OR intentionally underestimating bad debt to overstate profit.
2. Allowance Growing Slower Than AR
If AR grows by 50% year-over-year, but the allowance decreases or stays flat, the company is failing to reserve for the new risk. Suggests profit manipulation.
3. Write-offs Consistently Lower Than Allowance
If a company records $100k in bad debt expense every year, but only ever writes off $10k, they are intentionally overestimating to create a "cookie jar" reserve.
Key Takeaway
Allowance for doubtful accounts estimates receivables that won't be collected, matching the expense to the period revenue was earned.
The allowance is a contra-asset, reducing reported receivables to net realizable value. When customers prove uncollectible, the write-off reduces both receivables and allowance, with no profit impact (already recorded as expense). Understanding that the allowance is an estimate—not a fact—is critical to evaluating financial statement quality.
Test Your Understanding
See if you've got the basics down. Click each option and check your answer.
Question 1: A company uses the percentage of sales method to estimate bad debt. Which of the following is true?
Question 2: A company wrote off a $5,000 uncollectible account in 2026. What is the impact on 2026 profit?
Question 3: Which aging category indicates highest default risk?
Question 4: A company has $500,000 in AR and a $20,000 allowance. How much is the net realizable value of AR?
Question 5: True or False: The direct write-off method better matches revenue to expense than the allowance method.
Ready to Practice?
You now understand bad debt estimation. The Practice Lab challenges you to estimate bad debt using percentage of sales, analyze aging schedules, adjust allowances, and record write-offs.
Try the Practice LabWhat's Next?
Now that you understand estimated liabilities (allowance), the next module explores Notes Receivable—formal, interest-bearing receivables.