Understanding Discrepancies Between Payroll and Invoiced Amounts
When reviewing payroll and invoiced amounts, discrepancies may arise due to the processes of estimation, adjustment, and reconciliation. Below, we explain the key reasons for these differences and how they are resolved.
Overview of Payroll and Invoicing Processes
Invoices are typically generated based on estimated recurring pay amounts. Once the actual payroll is processed, adjustments are made to align the invoices with the actual figures. This estimate-then-true-up model ensures that any differences are accounted for in subsequent invoices.
Common Discrepancies and Their Causes
1. Final Month Payroll Adjustments
For an employee’s final month, discrepancies can occur due to:
Estimated Invoicing: The initial invoice for the final month is based on estimated pay. After payroll is processed, the actual gross pay may differ due to additional components, such as one-off payments for unused leave (e.g., accrued annual leave), which are taxable income.
Regularization in Subsequent Invoices: Any difference between the estimated invoice and the actual payroll cost is carried forward and billed as a regularization in the next month’s invoice. For example, if April’s payroll includes a one-off payment, the adjustment will appear in May’s invoice.
Employer Contributions: Employer social contributions (Employer Burden) are billed with a one-month lag. These contributions are calculated based on the actual payroll of the prior month, which may include adjustments like holiday pay in lieu.
2. Rounding Differences
Small cent-level differences may occur between the sum of invoiced income lines and the gross salary shown on the payslip. This happens because:
Payroll systems calculate gross pay and statutory items to multiple decimal places.
Invoice line items are rounded to two decimal places before summing.
When multiple components are estimated, adjusted, and regularized across months, rounding at the line-item level can result in minor variances. These differences are typically a few cents and do not affect the overall accuracy of payroll amounts.
Resolving Discrepancies
Discrepancies are resolved through the regularization process, where adjustments are made in subsequent invoices to align with actual payroll figures. Understanding the timing and logic of these adjustments can help reconcile payroll and invoiced amounts effectively. By following these principles, payroll and invoicing discrepancies can be understood and addressed, ensuring accurate financial records.
Related Topics
How to reconcile payroll and invoices
Understanding employer social contributions
Managing one-off payroll adjustments