A payroll error can look small on a payslip but become expensive quickly. Whether an employee has been underpaid, paid twice, taxed incorrectly or missed superannuation, knowing how to fix payroll errors promptly protects your people, your cash flow and your compliance position.

The right response is not to quietly change the next pay run and hope it balances out. First establish exactly what happened, correct the employee’s entitlement, update the payroll records and make sure your Single Touch Payroll (STP) information reflects the corrected year-to-date figures. Then find the process gap that allowed the mistake through.

Start by confirming the error and its full impact

Before processing an adjustment, compare the original pay run with the source records. This may include approved timesheets, rosters, employment agreements, award classifications, leave records, expense reimbursements and superannuation settings. Check the pay period involved, the affected employee or employees, and whether the same issue may have appeared in other pay runs.

Payroll errors commonly arise from an incorrect hourly rate, missed overtime, the wrong award classification, leave entered incorrectly, duplicate hours, an outdated tax file number declaration, or a superannuation setting that has not been updated. A new employee setup can also be the source of problems if bank details, pay categories or withholding information were entered incorrectly.

Do not assume the difference on the employee’s bank account is the only amount to fix. A wage correction may also affect PAYG withholding, superannuation, leave accruals, workers compensation reporting and STP. If an error has been running for several months, calculate the full period before making a correction.

Keep a clear correction file

Create a short record of the issue while the details are fresh. Note when it was identified, the pay periods affected, the cause, the amount calculated, who checked it and how it was corrected. Keep copies of supporting records with your payroll files.

This is good business practice, not paperwork for its own sake. Clear records make it easier to explain the adjustment to the employee, answer questions later and avoid applying a second correction by mistake.

Fix underpayments first

If an employee has been underpaid, act without delay. This includes unpaid ordinary hours, penalty rates, overtime, allowances, commissions, leave entitlements and superannuation. Speak with the employee directly, explain what occurred in plain language and tell them when they will receive the correction.

In many cases, the practical solution is an out-of-cycle pay run. This gets the employee paid promptly and creates a clean payroll record. Where the correction is included in the next scheduled pay run, make sure the payslip clearly identifies the adjustment and that the employee understands it is not part of their usual earnings.

Check the applicable award, enterprise agreement or employment contract before finalising the amount. For trades, hospitality, retail and NDIS providers in particular, classifications, weekend rates, broken shifts, allowances and overtime rules can make an apparently simple calculation more involved.

If superannuation has been underpaid, calculate the missing contribution as well. Where the required super amount was not paid by the quarterly due date, additional obligations may apply. Deal with this promptly rather than waiting for year-end, as delays can increase the cost and complexity of putting it right.

Handle overpayments carefully

Overpayments need a more measured approach. An employee may agree to repay an accidental overpayment, but do not simply deduct money from their next pay without checking the arrangement is lawful and properly documented. The recovery method should be reasonable, transparent and agreed with the employee.

Start with a written explanation showing the amount overpaid, the relevant pay period and the proposed repayment options. A one-off repayment might suit a small amount, while a staged repayment plan may be more realistic for a larger error. Keep the agreement on file and process each repayment correctly through your payroll system.

The tax treatment of an overpayment can depend on when it is discovered and whether it is recovered in the same financial year. This is one area where a quick check with your accountant can prevent a payroll adjustment creating incorrect PAYG or STP figures.

Correct STP and payroll reporting

Once the actual pay figures are correct, update your payroll software. In Xero, this will generally involve recording the adjustment in the appropriate pay run and lodging the related STP update. The aim is for the employee’s year-to-date wages, tax and superannuation figures to match what has actually been paid and what your records support.

Do not try to fix a payroll mistake by editing bank transactions or posting a manual journal alone. Those entries may make the accounts look tidy while leaving employee pay records and STP reporting wrong. Payroll should be corrected in the payroll system first, then reconciled through the accounts.

If the mistake relates to a previously finalised financial year, take extra care. The correction process may differ depending on the issue, the timing and your software setup. The same applies if you have lodged BAS figures that are affected by the payroll error. Get advice before making retrospective changes so the payroll file, BAS records and tax reporting stay aligned.

Check the flow-on effects before closing the file

A corrected gross wage does not automatically mean every related record has been corrected. Review the following areas before marking the issue resolved:

  • PAYG withholding and payment summaries reflected through STP
  • Superannuation guarantee amounts and payment dates
  • Annual leave, personal leave and rostered day off balances
  • Payroll tax, workers compensation and job-costing reports where relevant
  • BAS figures and the reconciliation between payroll, bank payments and the general ledger

For a sole trader with one or two staff, this may take half an hour. For a business with shift workers, multiple pay categories or several locations, it can take longer. The size of the correction matters less than completing the chain of checks properly.

Tell the employee what has changed

Payroll is personal. A clear conversation can prevent a small administrative issue becoming a trust issue. Tell the employee what was wrong, what you have done to fix it and what they will see on their payslip or in their bank account.

Keep the explanation factual. There is no need to overcomplicate it with payroll jargon, but do not be vague either. If you are still checking the final figure, say so and give them a realistic date for an update. Employees are usually more understanding when they can see the issue is being handled promptly and properly.

Prevent the next payroll error

Most recurring payroll mistakes come back to rushed setup, unclear approval steps or payroll data being entered from incomplete information. A tidy process is the best control.

Start with employee setup. Confirm the employment type, award or agreement, pay rate, ordinary hours, allowances, tax declaration, super fund details and leave settings before the first pay run. When a rate changes or an employee moves roles, update the payroll system from the correct effective date and retain the approval.

For each pay cycle, have someone check timesheets and leave before payroll is processed. The person approving hours does not need to be an accountant, but they should know who worked, who was absent and whether overtime or allowances apply. For owners processing payroll themselves, a simple pre-payroll checklist is often enough to catch missing or duplicated entries.

After submitting the pay run, reconcile wages, PAYG and superannuation payable accounts regularly. In Xero, this means matching payroll clearing amounts to the bank and reviewing exception reports rather than waiting until BAS time. Regular reconciliation turns payroll errors into small corrections instead of end-of-year clean-ups.

It also helps to review payroll reports every quarter. Look for unusual changes in average hours, overtime, leave balances, superannuation amounts and gross wages by employee. A report that does not look right is often the earliest warning that a setting or process needs attention.

When to get help

Get professional support when an error affects multiple employees, has continued over several pay periods, involves complex award interpretation, changes superannuation obligations or affects BAS and year-end reporting. It is also sensible to ask for help if you are unsure whether an adjustment belongs in the current or prior financial year.

Venables Accountants can help Adelaide Hills business owners clean up payroll records, review Xero payroll settings and put practical checks in place for future pay runs. The goal is not more administration. It is clear numbers, tidy systems and confidence that your staff are being paid correctly.

Payroll mistakes happen. What matters is responding early, correcting the full impact and leaving your payroll process stronger than it was before.