The Instant tax write-off allows you to write-off something for the business immediately. The obvious benefit is that it generally reduces the cost of the items that you need to buy for your business. Due to COVID-19 the terms are particular generous now, and I doubt that you will get as good a deal as this next year.
So if you are planning to upgrade your point of sale system, you need to move now as the cutoff date for the instant asset write-off ends in a week.
As a minimum, consider getting a new server with the latest windows software so it will speed up your operation and save you a lot of time.
Or if you sell product by weight what about a scale?
Anyway I would suggest that you speak to your accountant about it ASAP because you need to move now.