---
title: "Back Pay | HR Pay Runs"
slug: "back-pay"
description: "Learn about back pay in Marlin HR payroll software for tyre and mechanical workshops."
tags: ["Marlin HR"]
updated: 2026-10-08T03:22:19Z
published: 2026-10-08T03:22:19Z
canonical: "help.megabus.com.au/back-pay"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.megabus.com.au/llms.txt
> Use this file to discover all available pages before exploring further.

# Back Pay

**Marlin HR** enables paying back pay using an Adjustment Pay.

The method depends on whether the back pay is a [missed bonus or allowance](/hr/docs/back-pay#missed-bonuses-or-allowances), or an [underpayment](/hr/docs/back-pay#underpayments) over a period of time.

## Missed Bonuses Or Allowances

If the back pay is a missed bonus or allowance, add it using an [adjustment pay run](/hr/docs/adjustment-pay-runs).

**To add a missed bonus or allowance:**

- Perform an **[adjustment pay run](/hr/docs/adjustment-pay-runs)** for the relevant employees
- Add the amount against the appropriate **Before Tax** allowance  

(e.g. Bonus, Tool Allowance, Meal Allowance, Vehicle Allowance)

## Underpayments

For more complex situations, such as underpaying employees over a period of time, add back pay as a **separate allowance**.

**To add back pay for an underpayment:**

- Add a [Before Tax allowance](/hr/docs/allowances) called **Back Pay** if a suitable allowance type does not exist.
- Perform an **[adjustment pay run](/hr/docs/adjustment-pay-runs)**
- Enter the **total before tax underpayment** amount against the **Back Pay** allowance
- [Adjust the tax amount](/hr/docs/tax-adjustments) if required
- **Check all figures** before finalising the pay run

Tip

[Add a comment to the pay advice](https://help.megabus.com.au/hr/docs/pay-advices#pay-advice-comments) explaining the payment (e.g. Back Pay is for underpayment between dd/mm/yyyy and dd/mm/yyyy).