Record Keeping for Tax Purposes Australia 2025–26: What You Must Keep and For How Long

If you’ve ever scrambled to find a receipt during tax time — or worse, had a deduction denied because you couldn’t prove it — you already know the value of good record keeping. For the 2025–26 income year, the Australian Taxation Office (ATO) expects individuals and businesses to maintain clear, complete, and accessible records that support every figure in their tax return or Business Activity Statement (BAS).

Whether you’re a sole trader, small business owner, property investor, or salaried employee with work-related claims, understanding what to keep, how long to keep it, and how to organise it can save you money, stress, and potential penalties.

The Five-Year Rule — And When It’s Not Enough

The cornerstone of Australian tax record keeping is the five-year rule: most business tax records must be kept for at least five years from the later of when the record was prepared or obtained, or when the relevant transaction was completed.

But five years is not always enough. Some records must be kept longer:

• Depreciating assets — keep records throughout ownership, plus five years after disposal
• Capital Gains Tax (CGT) assets — keep records from acquisition through to five years after disposal
• Records used in a later return — retain until the review period for that later return has ended
• Assessments under review — keep records until the review period closes
• Superannuation contributions — five years from the contribution date
• FBT records — five years from lodgement of the relevant FBT return

The practical takeaway: don’t set a single destruction date for all records. Before deleting anything, check whether it relates to an asset you still own, a figure carried forward, or an assessment still open for review.

What Makes a Valid Tax Record?

A compliant record must clearly explain the essential features of a transaction. At minimum, this means capturing:

• The date of the transaction
• The amount (including GST where applicable)
• A clear description of what was purchased or received
• The business or income-earning purpose

Records must be accurate, complete, protected from unauthorised alteration, and available to the ATO on request. They must also be in English — or readily convertible into English.

Useful supporting documents include:

• Tax invoices and receipts
• Bank and payment records
• Sales and income records
• Contracts and agreements
• Payroll and superannuation records
• Asset registers and depreciation schedules
• Worksheets explaining calculations or elections

A bank statement alone is rarely enough. It shows money changed hands — but not what was purchased or why it’s deductible. Itemised invoices and receipts provide the detail needed to substantiate a claim.

Digital vs Paper Records

The ATO accepts both paper and electronic records. A clear digital copy can replace the original paper document, provided it’s a true reproduction — though check whether another regulatory requirement still demands the original.

A compliant digital record-keeping system must:

• Produce clear, readable records
• Protect records from damage and unauthorised changes
• Allow records to be retrieved quickly
• Be exportable into standard formats (e.g., Excel or CSV)
• Remain accessible even if encrypted or password-protected

Cloud accounting doesn’t transfer responsibility to your software provider. If you switch systems, download a complete copy of your data and verify that reports and source documents remain readable. You remain responsible for your records even if a bookkeeper, employee, or tax agent manages them day-to-day.

Records for Income and Deductions

Income Records

Keep a clear trail from every transaction to the figure reported in your return or BAS. Relevant records include sales invoices, receipts, bank deposits, and reports from payment platforms.

From Tax Time 2026, the ATO expanded sole-trader pre-fill to include certain assessable payments — such as government grants and amounts reported through the Taxable Payments Annual Report. Treat pre-filled data as a checking aid, not a replacement for your own books.

Deduction Records

For every deduction, retain evidence of:

• What was purchased or paid
• The amount and date
• Its connection to earning income or running your business
• Any private-use adjustment
• The method and calculations used

Some claims require specialised evidence — motor vehicle logbooks, depreciation schedules, or diaries recording business versus private use. Estimates without supporting evidence create substantiation problems. Regular reconciliation against bank and EFTPOS statements helps catch missing or duplicated transactions.

Tip: A separate business bank account reduces the mixing of personal and business expenses — but bank records should complement invoices and receipts, not replace them.

Small Business Records: BAS, GST, Payroll and Super

BAS and GST

Keep the source documents and calculations behind every amount reported on your BAS. This includes:

• Tax invoices and receipts supporting GST claims
• Records of GST adjustments and decisions
• For taxable imports: Department of Home Affairs documents showing GST paid

A separate GST ledger makes reconciliation and BAS preparation easier. Your final BAS should reconcile to your underlying accounting, payroll, and payment records.

Wages and PAYG Withholding

Employer records should cover salaries, wages, bonuses, allowances, and amounts withheld. Single Touch Payroll (STP) reporting does not replace the obligation to retain underlying payroll records. Maintain enough detail to reconcile each employee’s pay calculation, STP reports, PAYG withholding on the BAS, and actual bank payments.

Superannuation

Retain records showing:

• How super guarantee contributions were calculated
• Employee and fund details
• Payment dates, amounts, and bank or clearing-house confirmations
• Evidence that eligible employees were offered a choice of fund

Contribution records must be kept for five years from the contribution date. Choice-of-fund records have their own five-year starting point.

Assets, Depreciation and the $20,000 Instant Asset Write-Off

For each business asset, keep documents establishing:

• Purchase cost and acquisition date
• Installation date and business-use percentage
• Depreciation treatment and method
• Disposal details

For 2025–26, eligible businesses with aggregated annual turnover below $10 million can immediately deduct the business-use portion of assets costing less than $20,000, first used or installed ready for use between 1 July 2025 and 30 June 2026. Even with an instant write-off, you must retain evidence of cost, GST treatment, business-use percentage, and the date the asset was first used.

Don’t discard asset records after five years from purchase. Records for depreciating assets must generally be kept throughout ownership and for five years after disposal.

Investment Properties, Shares and CGT Assets

CGT record keeping should start the day you acquire an asset — not when you sell it. For investment properties and shares, retain:

• Ownership and acquisition documents
• Cost-base calculations (including purchase costs, improvement costs, and incidental costs)
• Rental income and expense records (for investment properties)
• Transaction and distribution records (for shares)
• Disposal details and any market valuations

CGT records may need to be kept for far longer than five years from purchase. The general rule: retain them while you own the asset and for five years after disposal.

What Happens When Records Are Weak?

Poor records don’t automatically trigger an audit — but they make it much harder to explain discrepancies or substantiate deductions if the ATO asks questions.

The ATO can request business records and may use computer-assisted methods to analyse electronic data. Missing invoices, unexplained deposits, unreconciled payroll figures, or inaccessible digital files may require additional explanation.

Failure to meet record-keeping requirements can result in:

• Financial penalties
• A direction to complete an ATO-approved record-keeping course
• Deductions being disallowed if you can’t prove the nature and purpose of an expense

The ATO generally provides education and assistance first — but compliance history and behaviour are taken into account.

2025–26 Updates to Be Aware Of

• Interest charges no longer deductible: General interest charge and shortfall interest charge incurred on or after 1 July 2025 are not tax-deductible. Keep statements identifying the type and date of any charge so it’s not incorrectly claimed.
• Plug-in hybrid vehicles and FBT: From 1 April 2025, plug-in hybrid vehicles are no longer treated as zero or low-emissions vehicles for the electric-car FBT exemption. Retain records supporting the treatment and calculation adopted.
• Payday Super from 1 July 2026: While outside the 2025–26 year, use your year-end payroll review to prepare systems and ensure accurate employee, fund, and payment records are in place.

A Practical Record-Keeping Routine

A simple, consistent routine beats a once-a-year scramble:

1. Capture documents promptly — scan or save receipts before they fade or are lost
2. Use consistent folders — separate income, expenses, BAS, payroll, super, assets, and CGT records by income year
3. Name files clearly — include the date, supplier, and transaction category
4. Separate business and personal banking — simplifies reconciliations and private-use adjustments
5. Reconcile regularly — compare accounting records with bank and EFTPOS statements
6. Attach evidence to transactions — a ledger entry without its invoice may not establish the character of the expense
7. Maintain an asset register — record cost, acquisition date, use percentages, depreciation treatment, and disposal
8. Back up digital files — confirm backups are readable and exportable if software changes
9. Set destruction dates carefully — extend them for assets, later returns, and matters under review
10. Review your system annually — the ATO provides a record-keeping evaluation tool to help identify weaknesses

Sources

• ATO — Overview of record-keeping rules for business
• ATO — Records to keep longer than five years
• ATO — Digital record keeping
• ATO — Employment and payroll records
• ATO — Record keeping for Payday Super
• ATO — GST records
• ATO — Capital Gains Tax
• ATO — What’s new for small business — Tax Time 2026
• ATO — $20,000 instant asset write-off for 2025–26
• CPA Australia — ATO’s main Tax Time focus areas 2026

Ready to Get Your Records in Order?

Staying on top of your tax records throughout the year is one of the best investments you can make in your financial health. Whether you’re a sole trader, small business owner, or property investor, TaxServe Australia’s experienced tax professionals can help you set up a record-keeping system that works — and ensure you’re claiming every deduction you’re entitled to.

Contact TaxServe Australia today to speak with a registered tax agent who understands your situation. Visit taxserve.com.au or call us to get started.