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Bad Debt Expense

Bad debt expense is the money a business writes off when a customer cannot or will not pay their invoice. It represents the cost of extending credit that ultimately goes unpaid, turning expected revenue into an actual business loss.

What it means

When you sell goods or services on credit, you record that sale as revenue and expect payment later, which creates an asset called accounts receivable. However, human nature and business reality mean that not every customer pays their bills.

Some go bankrupt, others dispute the service, and a few simply vanish. When you finally accept that a specific invoice will never be paid, you must record a bad debt expense.

This accounting step ensures your financial statements are accurate and do not overstate the money you actually expect to collect. Tracking bad debt is essential for realistic financial management.

If you ignore unpaid invoices, your balance sheet will show inflated assets and your income statement will show profits you never actually received in your bank account. This can lead to poor decision-making based on phantom wealth.

By accounting for bad debts, you gain a truthful picture of your financial health and cash flow. In everyday practice, businesses use two main methods to handle this.

The direct write-off method records the loss only when a specific invoice is deemed totally uncollectible. The allowance method, which is preferred by accountants, estimates a percentage of total credit sales or receivables that will likely go unpaid each month, setting aside a buffer in advance.

Managing this expense also helps you tighten your credit control procedures. By reviewing which clients fail to pay, you can refine your payment terms, run better credit checks, and require upfront deposits from risky buyers.

Ultimately, keeping a close eye on bad debts protects your working capital and keeps your business running smoothly.

In practice

Real-world examples.

1

Example

A freelance designer completes a website for a client worth 2,000 pounds. After six months of ignored emails and the client closing their doors, the designer writes off the 2,000 pounds as bad debt expense.

2

Example

A small wholesale bakery sells 5,000 pounds of flour to a local cafe on credit. The cafe suffers a sudden cash flow crunch and goes into liquidation. The bakery records a 5,000 pound bad debt expense.

3

Example

An IT consultancy provides 12,000 pounds of software support to a startup. The startup fails to secure funding and shuts down without paying. The consultancy logs a 12,000 pound bad debt expense.

Think of it

Imagine lending a friend money for lunch with the promise they will pay you back tomorrow. After six months of excuses, you finally accept they are not paying and cross it off your mental ledger as a loss.

Formula

Calculation

Estimated Bad Debt = Total Credit Sales multiplied by Historical Bad Debt Percentage. Example: If you have 100,000 pounds in credit sales and historically 3 percent goes unpaid, your bad debt expense is 3,000 pounds.

Case study

Seen in the real world.

GreenLeaf Landscaping, a commercial grounds maintenance company, finished a large corporate project worth 20,000 pounds for Apex Property Group. GreenLeaf recorded the transaction as revenue on credit. Unfortunately, Apex ran into severe financial distress due to a market downturn and entered administration six months later, leaving their creditors empty-handed.

GreenLeaf management reviewed the situation with their accountant and realized the 20,000 pounds would never be recovered. To comply with accurate accounting standards, they recorded a 20,000 pound bad debt expense on their income statement and reduced accounts receivable by the same amount on the balance sheet.

This adjustment lowered GreenLeaf's net profit for the year, reflecting the true economic reality of the lost income. As a direct result of this painful lesson, the company updated its credit policy. They now require a 50 percent upfront deposit from all new corporate clients and credit checks before starting any future projects, successfully preventing similar losses.

Watch out

Common mistakes.

  • Waiting indefinitely to write off dead invoices instead of doing it promptly.
  • Failing to separate bad debt from regular sales discounts or returned items.
  • Not setting aside an allowance for doubtful accounts, leading to sudden profit shocks.

Questions

People also ask.

Is bad debt expense tax deductible?

In many tax jurisdictions, you can deduct bad debts if you previously reported that unpaid amount as taxable income using the accrual method of accounting.

What is the difference between bad debt and doubtful accounts?

Bad debt is a confirmed loss from an unpaid invoice. Doubtful accounts are an educated guess about unpaid invoices you expect might go bad in the future.

Does bad debt affect cash flow?

Directly, no, because cash never entered your business in the first place. Indirectly, it highlights the lack of cash coming in, which hurts your working capital.

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Last updated · September 9, 2026
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Disclaimer

The information provided in this finance dictionary is for educational and informational purposes only. It should not be construed as financial, investment, legal, or tax advice. Always consult with a qualified professional before making any financial decisions. Money Master HQ makes no representations or warranties about the accuracy, completeness, or suitability of this information. Use of this content is at your own risk.