Provides access to the publicly available information provided by businesses when they register for an Australian Business Number ( ABN ). If the ABN quoted on the invoice is not valid or the details do not match the supplier, you must withhold from the payment at the top tax rate. You can use ABN Lookup to check an ABN . If the ABN you have been provided is wrong, you can report it to us using our self-help services. Free ABN lookup tool. Look up ACN, ABN , ABR, trademarks, business names and other Australian company information ABN Lookup lets you search by ABN , ACN or name to access publicly available information supplied by businesses. Learn how to update your ABN details, use the web services and find out about the trading name changes.
