A company's power to sign, discharge and otherwise deal with contracts can be exercised by an individual acting with the company's authority and on its behalf. A company can deal with contracts without using a common seal. A company may execute a document by having it signed by: * 2 directors of the company; or * a director and the company secretary; or * for a company with a sole director who is also the sole secretary—that director. If the document is to have effect as a deed, it should be expressed to be a deed.

[sections 126—127, 240]

A company is not required to have a common seal. If it does, the seal must show the company's name and its ACN. The seal is equivalent to the company's signature and may be used on important company documents such as mortgages.

[sections 123, 127(2)]