What is Umart's Australian Business Number (ABN)? Grant May 30, 2017 03:28 Follow Umart's ABN is 74 076 486 416. This can also be found at the top of all of our receipts. Related articles What is Umart Online's Phone Number? What does 24-48hrs mean? Can Umart price match competitors? How do i change the Billing Address on my account? What are Umart's Postage / Shipping Fees?