If your business is a corporate tax entity (company, corporate limited partnership or public trading trust), you may be eligible to claim the loss carry back tax offset in your 2021 company tax return.
If you're eligible, you can carry back losses to certain earlier years where there was an income tax liability.
Read more here:
https://www.ato.gov.au/Newsroom/smallbusiness/General/How-to-claim-the-loss-carry-back-tax-offset/?sbnews20210818
