The CRA can be contacted through:
Mail: PO Box 261 Curtin ACT 2605
A membership form is here: Membership application form 2020-21
The form can be downloaded directly in your browser and you can fill it in on most PDF readers. Save it on your device or computer and email it back to firstname.lastname@example.org .
To pay subscriptions we prefer direct bank transfer – see the form for details and other methods.