---
title: "Invoices | GTX Training"
slug: "invoices-bt"
description: "Learn the basics about Invoices in Marlin GTX trusted automotive software by Megabus."
updated: 2026-03-12T03:53:38Z
published: 2026-03-12T03:53:38Z
canonical: "help.megabus.com.au/invoices-bt"
---

> ## 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.

# Invoices BT

****Marlin GTX**** enables payments and other transactions to be recorded using invoices.

**Invoices** are used to finalise work orders, record standalone sales and process reversals, ensuring stock movements, payments and audit history are retained.

They can be added directly from **existing orders** or entered manually using the **Invoices module**.

## Invoicing Orders

Orders are typically invoiced from within a **Work Order**.

**To invoice an order:**

- Open the relevant **work order**
- Click **Invoice** at the top of the window
- Click **Yes** if prompted to save changes

The **Invoice** window will open.

**Review** the invoice details and edit if required.

## Finalising Invoices

Invoices can be **finalised** from either a work order or the Invoices module.

**To finalise an invoice:**

- Click **Finalise** at the top of the invoice window

The next step depends on the customer type.

### Cash Customers

For cash customers, the **Payment Details** window will open.

**To record payment:**

- Enter the **payment amount** against one or more transaction types:
  - Press **Enter** on the keyboard to enter the **full amount**
  - Key in different amounts for **split payments**
- Click **Ok**

### Account Customers

For account customers, the **Finalise Invoice Details** window will open.

**To finalise the invoice:**

- Confirm the **payment terms**
- Click **Finalise**

To take immediate payment instead, click **Pay Now**.

Note

Cash customers and account customers are covered in more detail in later onboarding guides.

> links?

## Delivering Invoices

After finalising, the **Document Delivery** window will open.

**Choose how to deliver the invoice:**

- **Print** the invoice
- Or, **Send** it electronically
- Or, click **Skip** to continue without delivery

## Invoices Module

Standalone invoices can be created using the Invoices module, whihc can be accessed by selecting **Main > Data Entry > Invoices** from the menu bar.

Invoices added here can be [finalised](/gtx/docs/invoices-ob#finalising-invoices) using the same process as work order invoices.

Warning

Standalone invoices may reduce traceability and stock control. **Use work orders for managed workshop transactions.**

## Reversing Invoices

Invoices can be reversed using **credit notes**, which are are covered in the following onboarding guide.

For Further Details

See the [Invoices](/gtx/docs/invoices) help guide.