Who to call

Merchant services

Existing merchant customers:
Call 1800 230 177 any time 

Merchant application enquiries:
Call 1800 730 554 7am - 7pm, Mon to Fri and 9am - 3pm weekends (Sydney Melbourne time)

Overseas? Call +61 2 9009 0593

General enquiries

Call 13 1998 any time

Overseas? Call +61 2 9009 0593

You can also locate your local Business Banker

Understanding your Merchant Agreement

Merchant Agreement

This is a booklet that all new merchant customers get, which lets you know your rights and obligations and what you need to do to use your Facility properly. 

Download Merchant Agreement

Quick reference guide

Helpful numbers, hints and tips to print and keep on hand. Includes most frequent decline codes.

Download Quick reference guide

Financial Services Guide

Gives you information about CommBank, the services and types of products we can offer you, how we get paid for them, and how we handle internal and external complaints.

Download Financial Services Guide


Information about surcharging, chargebacks and downtime processing. 

Go to Merchant Support

Maintenance forms

Change of bank account details form

Send your completed form to:

Merchant Services
PO Box 4086
Parramatta NSW 215, or

Fax: 1300 309 194, or
Email: MerchantMaintenance@cba.com.au

Download Change of bank account details form

Refund limit increase request form

Send your completed form to: 

Fax: 1300 309 194 or
Email: MerchantMaintenance@cba.com.au

Download Refund limit increase request form

Things you should know    

As this advice has been prepared without considering your objectives, financial situation or needs, you should, before acting on the information, consider its appropriateness to your circumstances. Please view our Merchant Agreement, Financial Services Guide and Operator and User Guides above.