Write-Off: What It Means, Types & Tax Rules

What is a write-off?

A write-off is an accounting and tax action that removes or reduces the carrying value of an asset or receivable because it is no longer expected to provide future economic benefit. When you decide money owed to you cannot be collected or an asset has lost all value, you record a write-off so your books reflect reality. Write-offs affect profit and loss, the balance sheet, and—where tax rules allow—taxable income.

Common write-offs include:

• bad debts (customer invoices you can't recover)
• asset write-offs (items scrapped, stolen or disposed of)
• inventory write-offs (obsolete, damaged or unsellable stock)

Why write-offs matter for your business

Write-offs matter because they change reported profit, taxable income and balance-sheet strength:

• Profitability: a write-off is usually recorded as an expense (reducing profit) or as a reduction in asset value.
• Taxable income: eligible write-offs can reduce your tax payable in the year they're claimed.
• Cash flow: a write-off does not create cash; it recognises a past or present loss of cash or value.
• Balance sheet: write-offs reduce receivables, inventories or asset carrying amounts, affecting equity and lending ratios.

Getting timing, documentation and GST/BAS adjustments right helps you avoid misstating profit, mis-timing deductions and triggering GST errors.

Common types of write-offs

Bad debts

Bad debts arise when a debtor cannot pay and you've exhausted reasonable recovery steps—for example, customer insolvency, prolonged default, or legally uncollectible debts. Tax rules require evidence and correct timing before claiming a deduction; see ATO guidance on deductions for unrecoverable income.

If insolvency is involved, refer to the Australian Financial Security Authority (AFSA) guidance on bankruptcy at https://www.afsa.gov.au/.

Asset write-offs (disposals)

An asset write-off occurs when an asset is scrapped, stolen, destroyed or sold for less than its carrying amount. This includes fully writing off small-value assets under simpler depreciation rules.

If you finance plant or equipment, understand how disposal affects loan and tax records. Explore equipment funding options such as asset finance or equipment finance.

Inventory write-offs

Inventory write-offs cover obsolete, damaged or unsellable stock. A write-off reduces closing stock and increases cost of goods sold, lowering taxable profit if properly documented.

See inventory for more guidance.

Impairment and write-downs

An impairment or write-down reduces an asset's carrying amount partially rather than to zero. A write-down recognises a partial loss and may, depending on standards and circumstances, be reversible. See the distinction under "Write-off vs write-down."

How write-offs work in accounting

Accounting entries vary by write-off type. Below are typical journal entries and their effect; these examples include GST handling where relevant.

Bad debt journal (customer invoice written off)

When a debtor is irrecoverable:

1. Remove the receivable from the balance sheet.
2. Record an expense on the profit and loss.

Example (GST-inclusive invoice of $1,100 where GST = $100):

Dr Bad debt expense           \$1,000
Dr GST clearing (reduction)  \$100
   Cr Accounts receivable         \$1,100

Effect: P&L shows $1,000 bad debt expense; GST output tax is adjusted on your BAS if you previously reported GST on the sale.

Asset disposal / write-off journal

If you dispose of plant with a carrying value of $1,000 and no sale proceeds, you clear the asset and recognise a loss:

Dr Loss on disposal of asset    \$1,000
   Cr Accumulated depreciation        $X
   Cr Asset cost                      $Y

If you sell the asset for cash, include the sale proceeds:

Dr Bank                        \$100
Dr Accumulated depreciation    $X
Dr Loss on disposal            $Z
   Cr Asset cost                    $Y

Inventory write-off journal

To write off obsolete stock costing $1,200 (GST depends on purchase/treatment):

Dr Inventory write-off expense  \$1,000
Dr GST clearing                 \$100
   Cr Inventory                          \$1,200

Worked journal example (bad debt)

Customer owes $1,500 (incl. $100 GST). After recovery attempts, you write off the debt:

Dr Bad debt expense         \$1,000
Dr GST output tax           \$100
   Cr Trade receivables          \$1,500

This lowers profit by $1,000 and reverses the GST previously reported.

Tax treatment and claiming deductions

Not every accounting write-off is immediately deductible for tax. The ATO sets the tests for when a bad debt or asset loss is deductible.

Key principles:

• Timing: you can claim a deduction for a bad debt only when you can demonstrate it is actually bad (e.g., debtor insolvent, bankruptcy, judgment with no recovery). See ATO guidance at https://www.ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/income-and-deductions-for-business/deductions/deductions-for-unrecoverable-income-bad-debts.
• Origin of the debt: debts arising from business income are usually revenue in nature and can produce deductible bad debts; capital debts require different treatment.
• Capital vs revenue distinction: losses from disposal of capital assets may be capital losses and treated differently from revenue deductions.
• Evidence: invoices, statements, recovery correspondence, insolvency notices and legal outcomes are essential.
• Related-party debts: special rules apply; deductions can be denied without commercial reality and independent evidence.

See the ATO page on instant asset write-off and simplified depreciation rules for current thresholds and eligibility.

GST and BAS implications for write-offs

GST complicates write-offs:

• If you originally charged GST on a sale and later write off the debt, you generally make a GST adjustment to reduce GST payable on your BAS.
• Adjustments depend on whether the sale was included in an earlier BAS period; correct the GST position once a debt becomes bad.
• Income tax bad debt deductions are GST-exclusive; BAS adjustments handle the GST component.

Example:

Invoice for $1,100 (incl. $100 GST) written off:

• For income tax: claim $1,000 as a bad debt expense (GST-exclusive).
• For BAS: reduce GST payable by $100 in the period you write off the debt, with supporting evidence.

See ATO guidance on GST and bad debts at https://www.ato.gov.au/business/gst/in-detail/your-activity-statements-and-gst/gst-and-bad-debts/.

Instant asset write-off and simplified depreciation rules

Small businesses may be able to immediately deduct eligible depreciating assets. Rules and thresholds change—always check the ATO for current eligibility at https://www.ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/depreciation-and-capital-expenses-and-allowances/simpler-depreciation-for-small-business/instant-asset-write-off.

Key points:

• Immediate deduction applies only to qualifying assets and taxpayers that meet the criteria.
• If you can't claim it, assets generally go into a small business pool or are depreciated under standard rules. See depreciation for more.
• The decision affects profit and tax timing; document the business case and confirm the asset is used for business purposes.

How to write off a bad debt — step-by-step

Checklist before recording a bad debt:

1. Attempt recovery: Send reminders and final demand notices; offer payment plans or compromises.
2. Document all steps: Keep invoices, emails, call logs and demand letters.
3. Assess recoverability: Allow reasonable time consistent with your credit terms; consider debt collection or legal action.
4. Determine write-off date: Record the date when recovery is not reasonably expected.
5. Record journal entries: Credit Accounts Receivable; debit Bad Debt Expense; adjust GST if applicable.
6. Reflect tax treatment: Claim the deduction in the year the debt becomes bad (subject to ATO tests).
7. Keep evidence: Retain all recovery attempts, notices, correspondence and court documents.

Minimum evidence includes the original invoice, an aged trial balance showing overdue status, written correspondence and any insolvency notices.

Write-off vs write-down — what's the difference?

• Write-off: complete removal of the carrying amount—the asset or receivable is considered worthless (carrying value -> $1).
• Write-down / impairment: partial reduction in carrying amount to reflect decreased value; the asset may still have some recoverable value.

Write-downs may be reversible under accounting standards; write-offs are final for the amount removed.

Common mistakes and how to avoid them

• Timing errors: claiming a tax deduction before a debt is truly bad—follow the step-by-step checklist.
• Poor documentation: missing invoices or insufficient recovery attempts—keep all correspondence and evidence.
• GST mis-claims: failing to adjust GST on BAS when a debt is written off—adjust GST separately.
• Misclassifying capital vs revenue: treating capital losses as revenue expenses—review the nature of the loss.
• Related-party debts: treating intra-group balances as bad debts without independent evidence—ensure arm's-length support.
• Assuming instant write-off eligibility: verify ATO criteria before claiming immediate deductions.

Worked examples

Example 1 — Bad debt write-off with GST

Scenario: Invoice $1,200 (incl. $100 GST). Customer declared bankrupt and debt unrecoverable.

Journal entry:

Dr Bad debt expense         \$1,000
Dr GST output tax           \$100
   Cr Accounts receivable       \$1,200

Tax treatment:

• Claim $1,000 as a bad debt deduction (GST-exclusive) once ATO tests are met.
• Reduce GST payable by $100 on your BAS in the period you write the debt off, with supporting documentation.

Example 2 — Asset instant write-off decision and journal

Scenario: Equipment purchased for $1,800 (incl. $100 GST). You qualify for simpler depreciation and apply the immediate deduction (confirm current ATO eligibility first).

Journal on purchase:

Dr Asset cost             \$1,000
Dr GST credits receivable \$100
   Cr Bank                      \$1,800

If you immediately deduct the asset:

Dr Depreciation expense   \$1,000
   Cr Asset cost                 \$1,000

Tax result:

• Entire $1,000 deductible in the current year if eligible.

Record-keeping checklist

Keep these documents for ATO evidence and audits:

• Original invoices and sales documentation
• Aged receivables listing showing overdue items
• Demand letters, final notices and recovery correspondence
• Bankruptcy or insolvency notices where applicable
• Board minutes or management approvals for significant asset write-offs
• Disposal documentation (sale receipts, scrap forms, disposal authorisations)
• BAS and GST adjustment records
• Depreciation schedules and asset registers

Follow ATO record-keeping rules and ASIC guidance; retain tax and business records for the statutory minimum periods required.

When to get professional advice

Consult an accountant, tax agent or tax lawyer for:

• Large or complex impairments and write-offs
• Related-party or intra-group debt write-offs
• Disputes with the ATO or BAS corrections
• Significant asset disposals affecting capital gains or loss calculations
• Situations involving insolvency, insolvent trading or potential director liabilities

A tax professional can confirm tax timing, evidence strategies and GST/BAS adjustments.

FAQ

Key takeaways

A write-off recognises that an asset or receivable no longer has recoverable value. Correctly recording write-offs affects profit, tax, GST and balance-sheet presentation. Follow a disciplined process: attempt recovery, document evidence, determine the write-off date, record accurate journal entries, and make GST/BAS adjustments where necessary. Keep complete records aligned with ATO and ASIC guidance and consult a tax professional for complex or material matters.

This article is general information only and is not legal, tax or financial advice.