You need to tell us if you’re leaving Australia and any of the following apply, you:
are going to live in another country
will be away for more than 6 weeks
get Age Pension under a social security agreement with another country
are leaving Australia within 2 years after coming back to live and started getting Age Pension since then
or your partner are getting income from employment.
If your Centrelink online account is linked to myGov, you can tell us about your travel plans online. If you don’t have these, you’ll need to create them.
You can also use your online account to get information on how your travel could affect your payments and concession cards.
If you can’t use an online account, tell us your travel plans by either:
calling the Older Australians line
going to a service centre.
Australia’s immigration department will tell us when you leave. They will also tell us when you return.
https://www.servicesaustralia.gov.au/when-and-how-to-tell-us-about-overseas-travel-if-you-get-age-pension?context=22526#:~:text=Australia's immigration department will tell,tell us when you return.&text=To get your payment or,qualification rules at all times.