It is worth checking that if you have a retail or commercial lease over your business in Victoria, the new laws about your lease. Its state government now makes commercial landlords provide rent relief which is linked to their tenants' fall in turnover.
Say your business lease is $1,000/week and say your turnover is 30% lower than before COVID struck. Now your business only needs to pay 70% of the lease or $700. Of that $700, half $350 can be deferred for now.
See how you go!
Unfortunately, it does not appear that such schemes are available in the rest of Australia