How to Correct Payroll Errors Without Making It Worse

A payroll mistake can feel small until it lands in an employee’s bank account. An incorrect number of hours, the wrong tax code or a missed pension deduction affects someone’s pay straight away, while also creating an HMRC reporting issue for the business. Knowing how to correct payroll errors quickly, calmly and with a clear record protects your staff, your cash flow and your compliance position.

For a small business, the right response is rarely to make a quiet adjustment and hope it balances out next month. The correct approach depends on what went wrong, whether the employee has already been paid and whether the payroll submission has already gone to HMRC.

Start by identifying the full payroll error

Before changing anything in your payroll software, establish exactly what is wrong. Compare the payslip with timesheets, salary records, approved overtime, holiday pay calculations, expense records and the employee’s tax details. Check the pay period as well. A correct figure entered in the wrong month can still lead to an incorrect RTI submission.

Common errors include paying too many or too few hours, using an outdated tax code, omitting a starter declaration, applying the wrong National Insurance category, or missing student loan and pension deductions. For directors and family-run businesses, confusion can also arise where a payment has been treated as salary when it was intended to be a dividend, or the other way round.

Write down the error, the correct figure, the difference and the reason it happened. This creates an audit trail and stops the issue being corrected twice by different people. It also gives you a straightforward explanation if HMRC, your pension provider or the employee asks questions later.

How to correct payroll errors before payday

If you spot the error before wages have been paid and before sending the Full Payment Submission, the fix is usually simple. Amend the payroll record, rerun the payroll calculation and issue the employee a replacement payslip showing the correct figures. Check that the payment file or bank instruction matches the revised net pay before authorising it.

If the payroll has been calculated but the FPS has not yet been filed, do not submit the original figures just because it is the usual payroll date. Take the extra time to correct the record. A short delay in processing is generally easier to manage than correcting pay, tax and National Insurance after the event.

Where a payment has already been set up with the bank but has not left the account, contact the bank immediately. Whether it can be stopped will depend on the payment method and timing. Do not assume a cancellation has worked without confirmation.

Correcting an FPS already sent to HMRC

Once an FPS has been submitted, payroll does not become impossible to correct, but accuracy matters. In many cases, the correction is made through the next FPS using the right year-to-date pay, tax and National Insurance figures for each employee. Your payroll software should guide the process, but it is worth checking that it is carrying the corrected cumulative totals through properly.

Do not simply submit a second FPS with the same pay date unless your software or accountant specifically instructs you to do so. Duplicate or badly timed submissions can make HMRC’s records look as though an employee has been paid twice. This may produce the wrong PAYE bill, trigger an HMRC query or create incorrect benefit information for the employee.

If the mistake relates to a previous tax year, the position needs more care. The old practice of using an Earlier Year Update no longer applies in the same way for most employers. Current HMRC processes generally require the correction to be made through an FPS containing the accurate year-to-date figures, but the exact action can depend on the tax year, software and type of correction. Check the payroll software guidance or take advice before filing anything.

If the error changes what you owe HMRC, reconcile your payroll liability account after the amendment. A corrected payslip alone does not guarantee that the PAYE, National Insurance, student loan or apprenticeship levy figures have updated as expected. Keep evidence of the original submission, the correction and any payment made to HMRC.

Put the employee right fairly and promptly

An underpayment should normally be paid as soon as practical. This is particularly urgent where the shortfall affects rent, bills or the employee’s ability to travel to work. Tell them what happened, what you are doing and when they will receive the balance. Clear communication is usually far better than allowing a staff member to discover the issue themselves.

Overpayments need a more measured approach. An employer can usually seek to recover genuine wage overpayments, but recovering the full amount from the next pay packet may cause real hardship and can damage trust. Agreeing a sensible repayment plan is often the better option, especially where the error was entirely on the employer’s side.

Check the effect of any planned deduction on National Minimum Wage, contractual terms and the employee’s written agreement where relevant. A recovery arrangement should be documented, including the amount, payment dates and what happens if the employee leaves. If an employee disputes the overpayment, avoid making assumptions and get advice before taking money from their wages.

Check the knock-on effects of the error

Payroll figures feed other obligations, so one correction may have several consequences. Revisit workplace pension contributions and re-enrolment records, particularly where the employee’s qualifying earnings have changed. If statutory sick pay, statutory maternity pay, holiday pay or a bonus calculation was affected, recalculate those amounts rather than correcting only the basic pay.

For construction businesses, payroll and CIS must also be kept separate and correctly classified. A subcontractor payment incorrectly run through PAYE, or an employee incorrectly treated as a subcontractor, is not a minor payroll adjustment. Employment status, tax deductions and reporting obligations may all need review.

Likewise, a wrong tax code should not be replaced with a guessed code. Use the code supplied by HMRC or the information provided through the proper starter process. Applying the wrong code to make the net pay look right can create a bigger tax problem later.

Build checks into every payroll run

Most repeat payroll errors come from rushed information, not complicated calculations. A reliable process gives someone time to check changes before the payment deadline. For a small team, that might mean setting a cut-off for timesheets and overtime, then reviewing a draft payroll report against the previous month before anything is submitted.

Useful checks include comparing gross pay and net pay with the last period, reviewing new starters and leavers, checking tax codes and National Insurance categories, and confirming pension deductions. Also review unusual items such as bonuses, back pay, salary sacrifice, unpaid leave and director payments. A large difference is not always wrong, but it should always have an explanation.

Keep payroll records, approvals and payslips organised. HMRC can ask to see PAYE records, and good records make it far easier to resolve a query or show why a correction was made. Restrict access to staff data as well: payroll contains sensitive personal and financial information.

When professional support is worthwhile

If the mistake involves several pay periods, statutory payments, pension contributions, a leaver, a director’s pay or an HMRC notice, it is sensible to pause before attempting a series of corrections. The cost of getting expert help is often lower than the time spent untangling incorrect submissions and employee concerns.

Short And Sons Accountants can help small businesses, contractors and limited company directors review payroll records, correct reporting and put a practical payroll routine in place. The aim is not just to fix this month’s issue, but to make the next payday less stressful.

A payroll error does not have to become a lasting problem. Deal with the facts promptly, explain the position honestly and keep a clear record of every correction. Your team will remember how you handled the mistake far more than the mistake itself.