How can I find my company’s Australian Company Number?
Ask your accountant
Your accountant has your company’s Australian Company Number (ACN) in your company’s file at their office. It is usually stored in a computer system and is easily accessible. Alternatively, your accountant can access the ACN from the Australian Securities and Investments Commission (ASIC).
Find your ACN at the National Names Index which is a free online index of Australian corporate and registered business names.
ASIC can supply you with your company’s ACN.
Your Australian Company Number is printed on the Certificate of Registration issued by ASIC. The Certificate of Registration is usually filed in the company’s corporate register at the company’s registered office.
Tip: The Australian Company Number is the last nine digits of your company’s Australian Business Number.