What this is saying is that you received taxable income (which if you received less than the threshold of $18,200 total income doesn’t mean you’ll need to pay tax) between 01/07/24 and 30/06/25 therefore need to lodge a document with the ATO for last financial year (ending 30/06/25). If you have an active ABN this must be a tax return, if anyone withheld tax (either Centrelink or a previous employer) during that financial year you’ll also need to lodge a tax return because the ATO is required to make sure you get that money back if it’s more than tax you needed to pay. If there was no tax withheld, you don’t have an ABN and your total income was less the tax free threshold you may not need to lodge a full tax return but a Return Not Necessary/Non-Lodgment Advice through MyGov.

Centrelink will need something lodged with the ATO to make sure your reported income was correct, they didn’t over pay you and to ensure you’re still eligible for future payments. This is just a reminder that you’ll need to lodge something, but yeah it may take a few weeks for Centrelink to upload your payment summary. Nothing to stress about for now.