Most payroll findings are not caused by one dramatic mistake. They come from small gaps that repeat every month until an auditor notices the pattern.
After twelve years of reviewing payroll systems, the same five errors appear in audit reports more than any others. None of them are dramatic. None of them involve fraud. They are small gaps in process that repeat every month until an auditor notices the pattern, and by then, the correction spans several periods.
1. Inconsistent employee records
Employee records that do not match across systems are the most common finding. A name spelled differently in the HR system and the payroll system, an ID number missing from one record, a department code that changed without being updated everywhere. Each inconsistency is minor on its own, but together they make it impossible to confirm who was paid what.
The fix is a single source of truth for employee data, with changes made in one place and propagated everywhere. A monthly reconciliation between the HR register and the payroll register catches drift before it becomes a finding.
2. Missing approval evidence
Payroll is approved every month, but the evidence of that approval is often missing. An email that was deleted, a sign-off that happened verbally, a spreadsheet that was overwritten. When the auditor asks who approved the payroll and when, the answer should be documented, not reconstructed from memory.
3. Incorrect statutory bases
Applying PAYE, SHIF, NSSF or the Housing Levy to the wrong earnings base is a calculation error that repeats silently. The payslip looks reasonable, the return is filed on time, but the amount is wrong. A sample recalculation during the monthly review catches this before it leaves the building.
4. Late filings
Late filings are visible to the regulator and easy to find. They usually happen when the deadline is known but not tracked, or when the person responsible changes without a handover. A compliance calendar with clear ownership prevents this entirely.
5. Changes without an audit trail
Retroactive changes to payroll, adjusting a salary after payment, correcting a deduction without documenting why, editing a record without showing the original, are the most serious finding because they undermine the integrity of the entire payroll. Every change should show who made it, when, and why.
The strongest payroll process makes exceptions visible before pay day, documents who reviewed them, and keeps the supporting evidence with the payroll period it belongs to.