---
title: "Amex | GTX Payments"
slug: "amex-american-express"
description: "Learn about Amex / American Express in Marlin GTX trusted automotive software by Megabus."
updated: 2025-09-16T06:21:22Z
published: 2025-09-16T06:21:22Z
canonical: "help.megabus.com.au/amex-american-express"
---
> ## 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.
# Amex / American Express
{{snippet.legacy inform}}
{{variable.GTX Bold}} enables you to set up and process AMEX as a customer payment method in Marlin GTX.
## Initial Set Up
### Customer Set Up
If there is not already an **AMEX** customer, set one up and ensure the merchant fees are directed to the correct account.
In **Manage Customers**, click on the icon to add a new Customer.
On the **Details** tab, enter the details as follows.
On the **Options** tab, ensure the correct Merchant Fee Account is selected and enter other values as appropriate for your system.
### Payment Type Set Up
You will need to ensure that **AMEX** is set up as a Payment Type.
From the menu, select **System > Options**.
Click on the **Payment Types** tab and then on the **Other** tab.
If AMEX is not already set up in the list:
* Click on the Add button and select AMEX from the Customer list.
* If you will charge customers a surcharge for using AMEX, enter an amount or percentage.
* Click on the Save icon.
### Payment Method
You will need to ensure that **Other Account** is displayed as a payment method on the Payment Details screen that appears when you finalise a cash sale.
From the menu, select **System > Options**.
Click on the **Payment Methods** tab.
Select **Customer Invoice** then ensure that **Other Account** is ticked.
Click on the Save icon.
## Processing an AMEX Payment
Convert the Work Order to an Invoice as usual and make any required changes or additions.
::: (Info) (Note)
Customer **1 CASH SALE** must be used for AMEX payments.
:::
* Click on Finalise to display the Payment Details window.
* Press Enter in **Other Customer** to apply the full invoice amount.
* Select **AMEX** from the Type field picker.
* Click on the **OK** button to process the payment.
::: (Info) (Note)
If required, you can split the payment between different payment methods, including **AMEX**, by entering the appropriate amounts in each field.
Ensure the remaining amount in the Balance field is zero before you click on the **OK** button.
:::
## Processing a Receipt from AMEX
When receiving the payment from AMEX you will need to process a Receipt.
* Select **AMEX** as the Customer.
* Enter the Amount Received and the Merchant Fee Amount (the GST component will be calculated automatically for you).
* Allocate the amount (including Merchant Fee Amount) against the appropriate transaction.
* Ensure the Left To Allocate amount at the bottom of screen is **0.00**.
**Click on Finalise to proceed to the Receipt Details screen:**
* Enter in the Direct EFT field to apply the total amount received into your bank account from AMEX (excluding Merchant Fee Amount).
* Enter an appropriate reference.
* Ensure the Balance is **0.00** and click on **OK**.
