GST turnover ($75,000 threshold)
The gross income figure that triggers GST registration.
GST turnover is your gross business income before expenses, excluding GST itself. Once it reaches — or you expect it to reach — $75,000 in a 12-month period, you must register for GST within 21 days. It’s a rolling test, not a financial-year one, so it can be triggered mid-year.
Worked example
You bill $6,500 a month. By month twelve you’re at $78,000, but you could see it coming much earlier — the test is what you reasonably expect over any 12 months, not what the June 30 total says.
Common mistake
Waiting for the financial year to end before checking. Registration is backdated to when you crossed the line, which can mean owing GST on invoices you never charged it on.
Grounded in ATO guidance. Figures last checked . General information, not tax advice.
Related terms
GST (Goods and Services Tax)
Australia’s flat 10% tax on most goods and services.
BAS (Business Activity Statement)
The form GST-registered businesses use to report GST and PAYG.
Taxable income
Assessable income minus deductions — what tax is actually on.
PAYG (Pay As You Go)
Paying tax through the year rather than in one lump.
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