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InvoiceBuddySeptember 28, 20257 min read

GST Basics: Do You Need to Register?

Goods and Services Tax (GST) is a 10% tax on most goods and services sold in Australia. As a business owner, you become an unpaid tax collector for the government once you hit a certain size.

The Threshold

You must register for GST if:

  • Your business has a GST turnover of $75,000 or more per year ($150,000 for non-profits).
  • You provide taxi or ride-sourcing services (like Uber) - you must register regardless of turnover.

If you turnover is less than $75k, registration is optional. Why would you register voluntarily? If you have high business expenses, registering allows you to claim back the GST credits on those purchases.

How GST Works

  1. You charge an extra 10% on your invoices.
  2. You keep that 10% aside (don't spend it!).
  3. You calculate the GST included in business purchases you made.
  4. You pay the difference to the ATO when you lodge your Business Activity Statement (BAS).

Example: You invoice $1100 ($100 GST). You buy a printer for $220 ($20 GST). You owe the ATO $100 - $20 = $80.

Lodging BAS

Most small businesses lodge quarterly. InvoiceBuddy helps you track your GST collected vs GST paid so you're never surprised by your BAS bill. The golden rule: open a separate savings account for GST and transfer that 10% every time you get paid.