ATO Record Keeping Requirements: What to Keep and How Long

Most people only start thinking about their records when something goes wrong. A deduction gets queried, a BAS figure needs checking, or a letter turns up asking for proof of a transaction from a few years back. By then the shoebox has usually been emptied into a bin, and the paperwork that would have settled the question in thirty seconds is long gone.

The ATO's record keeping requirements exist so that every figure in a return can be traced back to a document. They apply to sole traders, company directors, landlords and PAYG employees claiming work related expenses. This guide covers the general five year retention rule, the categories of records the ATO expects, the small business employee records that quietly slip through the cracks, and what happens when the paperwork is not there.

The five year rule and when the clock actually starts

The ATO's baseline standard is that most records must be kept for five years. Where the confusion creeps in is the starting point, because ATO guidance describes it in more than one way depending on the context.

• Five years from when you prepared or obtained the record.
• Five years from when the relevant transaction was completed, where that date is later.
• For many situations, five years to the end of the period during which the record may be needed, or five years after the relevant return is lodged.

Rather than trying to work out which version applies to a specific receipt, use the later date. If you lodged your 2026-27 return in the following year, and a transaction inside it happened earlier, keep the paperwork until at least five years past the lodgment date. Keeping records a bit longer than required costs you a folder or a cloud subscription. Reconstructing them costs considerably more.

What the ATO expects you to keep

The ATO requires businesses to retain records that clearly show their financial position. In practice that means the documents that prove what came in, what went out, and why.

• Sales and income records, including invoices, receipts and records of cash payments received.
• Expense records, including supplier invoices, receipts and payment confirmations.
• Bank and credit card statements that connect the transactions to your accounts.
• Records that support any deduction you claim, such as work related expenses, vehicle costs or home office use.
• Records of assets, purchases and disposals that affect your tax position.
• BAS and GST related working papers that show how reported figures were calculated.

The common thread is proof. A figure in a return should be supported by something a stranger could follow, even if that stranger is a reviewer reading the file several years later with no memory of the transaction. Written notes, diary entries and logbooks count, especially where a receipt alone does not explain the business purpose of a purchase.

An income and expense tracker that captures entries as they happen does the heavy lifting here, because the record exists from the moment the transaction occurs rather than being rebuilt from memory at tax time.

Employee and contractor records small businesses forget

Businesses with staff carry a second layer of obligations. The ATO expects detailed employee and contractor records, and these are the ones most often missing when a review happens.

• Wage and payment details for each employee.
• Tax file number declarations.
• Records of tax withheld from payments.
• Contractor payment details, including the basis on which payments were made.

These records matter because they support both your own tax position and the amounts you have withheld on behalf of others. If a payroll system generates them automatically, confirm that the data is actually retained rather than overwritten at the end of each financial year.

Records that may need to be kept longer than five years

Five years is the general rule, not an absolute ceiling. Some records need to be kept for seven years or more, and the ATO's own retention guidance notes that longer periods apply in particular circumstances. Property and asset records are a classic example, since a capital gains calculation may need a purchase contract from well over a decade earlier.

Because the exceptions depend on your situation, check the ATO page that matches the record type before you clear anything out. When in doubt, keep it. There is no penalty for retaining a document longer than required.

What happens if records are not kept

The ATO's guidance is blunt about the consequences. You may be prosecuted and fined up to $3,000 by a court if you fail to keep adequate records. There are limited circumstances in which a defence may apply, and the ATO sets out the details on its own page covering what happens when records are not kept.

A court imposed fine is only part of the picture. Records are how you substantiate deductions, and an expense you cannot prove is an expense you may have to give back. The financial sting usually comes from the disallowed claim, not the fine.

Paper, digital and the question of originals

The ATO's record keeping guidance covers storage, including electronic records, along with the conditions attached to keeping things digitally. Those conditions can depend on your circumstances and the type of record involved.

So before shredding or deleting anything, read the current ATO page for your situation. A sensible habit regardless of what the rules require is keeping a backup in a second location, so a failed hard drive or a house move does not wipe out years of substantiation.

A record keeping routine that survives a busy year

Most record keeping failures are not the result of dishonesty. They happen because capturing paperwork is a task that always gets pushed to tomorrow, and tomorrow never arrives until the accountant asks for it.

1. Capture every transaction the day it happens, even if only as a photo and a short note about the business purpose.
2. Separate personal and business spending through dedicated accounts wherever possible.
3. Reconcile regularly rather than annually, so gaps are noticed while the details are still fresh.
4. Store everything in one place. Scattered folders, email threads and gloveboxes are where records go to disappear.
5. Review the file at the end of each financial year and confirm nothing is missing before you archive it.
6. Keep archived years untouched. Do not tidy up an old year by deleting what looks unimportant.

None of this takes long when it is a habit. Ten minutes a week beats a fortnight of panicked reconstruction every July, and it means the numbers you hand to an accountant are already accountant ready.

Checking whether your own record keeping holds up

The ATO publishes a record keeping evaluation tool that helps you understand which records you need to keep and how well your business currently keeps them. It takes a short time to work through and is a reasonable way to find gaps before someone else does.

Pair that with a quick review of your own habits. If you could not produce, today, the receipts behind last year's return, that is the signal to change how records are captured. Records for the 2026-27 income year are easiest to keep well from the very first transaction, not from the week before lodgment.

Frequently Asked Questions

How long do I need to keep tax records in Australia?

The general rule is five years. The clock is described by the ATO as running from when you prepared or obtained the record, or when the relevant transaction was completed, and in many situations from lodgment of the relevant return. Because some records need to be kept for seven years or longer, check the ATO guidance for your specific record type.

What records does the ATO expect a small business to keep?

Records that clearly show your financial position. That includes sales and income records such as invoices, receipts and cash payment records, plus expense documents, bank statements, asset records and the working papers behind your BAS figures. Businesses with staff also need wage and payment details, tax file number declarations and records of tax withheld.

What happens if I fail to keep adequate records?

The ATO states that you may be prosecuted and fined up to $3,000 by a court if you fail to keep adequate records, with limited circumstances where a defence may apply. The bigger practical risk is losing deductions you cannot substantiate, which usually costs far more than the fine itself.

Is there a tool to check whether my records are adequate?

Yes. The ATO provides a record keeping evaluation tool that helps you understand what records you need to keep and how well your business keeps them. Working through it is a practical way to spot gaps in your current system before a review or an accountant query forces the issue.

Do any records need to be kept longer than five years?

Some do. The ATO notes that certain records need to be kept for seven years or more, and longer retention periods apply in particular circumstances, such as records that support a future capital gains calculation. If you are unsure about a specific document, keeping it longer costs very little.