RBizz Corporate Accountants - Resources #business record retentionRBizz Corporate Accountants - Resources #business record retentionhttps://www.rbizz.com.au/blogs/tag/business-record-retentionTue, 11 Aug 2026 17:33:22 +1000http://zoho.com/sites/<![CDATA[How Long Do You Actually Need to Keep Business Records? The 5-Year Rule Explained]]>https://www.rbizz.com.au/blogs/post/how-long-do-you-actually-need-to-keep-business-records-the-5-year-rule-explainedThe 5-year record retention rule sounds simple, but the clock starts from when you lodge the relevant return — not the transaction date — and some records (depreciating assets, CGT) need to be kept well beyond 5 years.]]>
How Long Do You Actually Need to Keep Business Records? The 5-Year Rule Explained


How Long Do You Actually Need to Keep Business Records? The 5-Year Rule Explained

The general rule is straightforward: keep business records for 5 years. The part that catches people out is knowing exactly when that 5-year clock starts, because it isn't always "5 years from today" — and getting it wrong means either keeping records far longer than necessary or, more riskily, discarding something you still need.

When the Clock Actually Starts

For most records, the 5-year period runs from whichever of these is later:

  • The date you prepared or obtained the record, or
  • The date the transaction or acts the record relates to were completed

For records supporting a tax return, this generally means 5 years from the date you lodge that return — not 5 years from the date of the underlying transaction itself. A supplier invoice from March doesn't need to be kept for 5 years from March; it needs to be kept for 5 years from when the return relying on that invoice was lodged.

What Actually Needs to Be Kept

  • Sales and purchase invoices
  • Bank statements and reconciliation records
  • Payroll records, including superannuation contribution records
  • BAS and GST records, including calculation worksheets
  • Asset purchase and disposal records, including depreciation schedules
  • Any records substantiating a claimed deduction

    • Where the 5 Years Can Actually Be Longer

    Depreciating assets




    Depreciating assets: records need to be kept for 5 years from the date of the last claim involving that asset — meaning for an asset depreciated over 10 years, the effective retention period is closer to 15 years once you add the standard 5-year tail.

    Capital Gains Tax Records




    Capital gains tax records: records relating to an asset subject to CGT should generally be kept until at least 5 years after you're sure no CGT event can occur — which for a long-held asset can mean retention periods well beyond the standard 5 years, potentially decades if the asset is held for a very long time before disposal.

    Records relevant to a dispute or ongoing review




    Records relevant to a dispute or ongoing review: if the ATO is actively reviewing a period, the standard clock doesn't apply the same way — retain records related to that period until the review is fully resolved, regardless of what the standard 5-year calculation would otherwise suggest.

    What Happens If You Can't Produce a Record

    If the ATO reviews a return and you can't substantiate a claimed deduction or a reported figure, the claim can be disallowed — meaning you retroactively owe tax on an amount you may have genuinely spent, simply because you can no longer prove it. This is a real financial cost, not just a compliance inconvenience.

    A Practical Retention System

    1. Tag records by financial year lodged, not just the date on the document itself — this makes the 5-year calculation straightforward rather than requiring you to work it out retrospectively.
    2. Keep a separate, longer-retention folder for depreciating assets and CGT-relevant records, since these don't follow the standard 5-year rule.
    3. Digitise records where possible — physical storage for a decade-plus retention period (for depreciating assets or CGT records) becomes impractical quickly, while digital storage doesn't.
    4. Don't destroy anything currently under ATO review, even if the standard 5-year period has technically passed.

    Check Your Retention System Before You Clean House

    If you're about to do an end-of-financial-year clean-out of old records, it's worth checking which ones are genuinely past their retention period and which ones (depreciating assets, CGT-relevant records) need to stay well beyond the standard 5 years.


    RBizz can review your record-keeping practices to confirm you're retaining what you need and safely clearing what you don't — get in touch before your next clean-out.

    Contact Us


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