If you haven't already lodged your Business Activity Statement (BAS) and superannuation payments, February 28 is the due date.
If you haven’t already lodged your Business Activity Statement (BAS), then be aware that the final date for lodgement of this and superannuation payments is next Thursday, February 28.
As this web page points out, you can do it online at the ATO's business portal, but you'll need to have registered for an AUSkey. There's also a "two-week deferral offer" on the due date of your activity statement if you lodge online.
There are also some key information about tax lodgement dates here. Here's one: "Where a due date falls on a day that is not a business day (that is, the due date is a Saturday, a Sunday or a public holiday), lodgement or payment may be made on the first business day after the due date without incurring a penalty or general interest charge."