For other ways you can find information quickly, see Contact us. If you need information in writing, ATO CommunityExternal Link offers ATO certified responses that are clear, technically correct and show you where to find out more.
Writing to us
ATO CommunityExternal Link also offers written answers to community questions – see if your question is answered there or add your own. It's fast and completely anonymous, with ATO certified responses you can rely on. We have online forms and instructions for most tax-related matters.
Also, you can write to us at:
Australian Taxation Office
GPO Box 9990
[insert the name and postcode of your capital city]
For example:
Australian Taxation Office
GPO Box 9990
SYDNEY NSW 2001
Make sure you are a primary or an authorised contact and that you include:
- the tax file number (TFN) or Australian business number (ABN)
- your full name, date of birth, address and phone number
- your signature.
Emailing us
We don't usually make our email addresses available as we prefer to you contact us in other ways. In limited situations, we may contact you by email, such as when we send general information rather than your personal information.
Posting your tax return
Within Australia
Post your tax return from within Australia to:
Australian Taxation Office
GPO Box 9845
[insert the name and postcode of your capital city]
For example:
Australian Taxation Office
GPO Box 9845
SYDNEY NSW 2001
From overseas
If you are sending your paper tax return from overseas in a prepaid envelope, change the address on the pre-addressed envelope by crossing out 'IN YOUR CAPITAL CITY' and replacing it with:
SYDNEY NSW 2001, AUSTRALIA
It will help us if you also cross out the barcode above the address.
If you are using your own envelope, post it to:
Australian Taxation Office
GPO Box 9845
SYDNEY NSW 2001, AUSTRALIA