A company seal (also known as a common seal or a corporate seal) is a rubber stamp used by corporations to execute documents. Section 127 of the Corporations Act 2001 (Cth) (Corporations Act) outlines the ways in which a company can validly execute documents. A company with a common seal may validly execute a document if the seal is fixed to the document (Corporations Act s127(2)). A seal is fixed to a document when it is stamped on the document
A company seal should have the words ‘common seal’ along with the following:
The company’s name;
The Australian Company Number (ACN) of the company; or
If the company uses an Australian Business Number (ABN) instead, the ABN should be printed instead of the ACN.