Evan May 30, 2017 03:28 What is Umart's Australian Business Number (ABN)? Umart's ABN is 74 076 486 416. This can also be found at the top of all of our receipts. Was this article helpful? 23 out of 30 found this helpful Have more questions? Submit a question Related articles About Umart Online How can I contact Customer Service? How do I change the address on my account? What is your Returns policy? We're here to help! Click here to contact Customer Service Help centre Contact us © 1999-2018 Umart Online Copyright. All Rights Reserved. 2 Kilroe St. Milton 4064 QLD Terms & Conditions | Privacy Policy