Preparing for an HR or payroll audit in Australia
Reviewed by Mellow Editorial Team, HR & payroll content team
An HR or payroll audit in Australia — whether internal or triggered by the ATO, Fair Work Ombudsman or a state revenue authority — is fundamentally a test of whether your records match your obligations. The better your documentation and processes, the shorter and less painful the process.
What auditors are actually looking for
Auditors from different bodies have different focuses, but they share a common thread: evidence that you calculated, reported and paid entitlements correctly.
The ATO focuses on PAYG withholding accuracy, superannuation obligations and Single Touch Payroll compliance. The Fair Work Ombudsman focuses on award and enterprise agreement compliance, pay rates, leave balances and record-keeping. State revenue offices look at payroll tax — whether you are registered, whether you applied the correct grouping rules, and whether you correctly classified contractors versus employees.
Across all of these, the core question is the same: can you produce records that show what you paid, to whom, on what basis, and when?
Records you must be able to produce
The National Employment Standards sit at the base of every employment relationship in Australia. That means every employee is entitled to at least four weeks of annual leave per year, and to redundancy pay on a scale that rises with years of service. If your records cannot demonstrate you have been accruing and paying leave correctly, you have a problem before an auditor even looks at anything else.
Beyond leave, you should be able to produce:
- Pay records showing gross pay, PAYG withholding, net pay and the basis for each calculation, for every pay period
- Superannuation records showing contributions paid to a complying fund at the correct rate — the Superannuation Guarantee rate is 12% of ordinary time earnings from 2026, and contributions must be paid by the quarterly due dates
- STP data — every pay event should have been reported through Single Touch Payroll at the time of payment, with finalisation completed by 14 July after the end of each financial year
- HECS/HELP withholding records where applicable, showing that repayment amounts were calculated from the correct banded scale and withheld accurately
- Leave balances for each employee, reconciled against your payroll system
- Employment contracts and variation records, showing the agreed terms at the start of employment and any subsequent changes
- Timesheets or equivalent records where employees are paid by the hour or are covered by an award with penalty rates
Fair Work record-keeping rules require that pay records be kept for seven years. This is not optional and applies even after an employee has left.
Common gaps that create audit risk
The most common issues that surface during audits are not usually deliberate — they are process failures that compounded over time.
Superannuation timing is a persistent problem. Contributions must actually clear the fund by the quarterly due date, not just be initiated. A payment that is raised but not processed in time creates an SGC liability, which carries interest and an administration charge on top of the shortfall.
Award interpretation errors are frequent, particularly around penalty rates, overtime, allowances and casual loadings. If you pay employees under an award, you need to be confident which classification applies to each employee and that your payroll system is applying the correct rates.
Contractor misclassification creates dual exposure: payroll tax risk with the state revenue office and potential superannuation liability if the contractor arrangement meets the extended definition of employment for SGC purposes.
STP finalisation gaps — where payroll has been processed but the end-of-year finalisation was not submitted by 14 July — affect employees' ability to lodge their tax returns and draw ATO attention to your payroll process.
Leave accrual misconfiguration in payroll software is surprisingly common, particularly after system migrations or changes to employment type. If part-time employees have had their hours changed but the payroll system was not updated, leave balances will be wrong.
How to prepare before an audit begins
The most effective preparation is not audit-specific — it is maintaining records as though an audit could happen at any time.
Practically, that means reconciling your payroll records to your superannuation clearing house statements at least quarterly. It means reviewing your STP reports after each finalisation period to confirm they match your payroll register. It means keeping employment contracts in a document management system that is searchable and up to date, not in individual email threads.
If you are running payroll manually or across multiple systems, it is worth doing a manual reconciliation before your next STP finalisation to identify discrepancies while you still have time to correct them.
If you do receive notice of an audit, your first step is to gather the records requested without altering or reconstructing them. Auditors can usually tell when records have been backdated or retrospectively amended, and that creates a far worse outcome than the original error.
Engage a payroll specialist or employment lawyer early if the audit is from the Fair Work Ombudsman or involves a significant period of potential underpayment. The cost of professional advice at the start is almost always less than the cost of responding poorly.
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