GST Registration Threshold Calculator
For sole traders and small businesses approaching the $75,000 registration line. Compares your projected turnover and your year-to-date run-rate against the relevant threshold.
Your turnover
Registration decision
- Threshold for your entity
- $75,000.00
- Projected turnover
- $80,000.00
- YTD annualised run-rate
- $60,000.00
Registration required. Your projected next-12-months turnover is at or above the threshold. Register within 21 days of becoming aware.
- If voluntarily registered, you must stay registered for at least 12 months.
- "GST turnover" excludes input-taxed supplies, private sales and capital-asset disposals.
- Late registration = ATO can backdate, owing GST on past sales.
Related: GST calculator · PAYG instalments
Frequently asked questions
What counts as 'GST turnover'?+
Gross income from sales (excluding GST) connected with Australia. Excludes input-taxed supplies (residential rent, financial supplies), private sales, and sales of capital assets. See GSTR 2003/13 for the ATO's detailed view.
When must I register?+
Within 21 days of becoming aware that your projected GST turnover for the next 12 months will reach the threshold ($75k general, $150k NFP, $0 for taxi/rideshare). You can register voluntarily below the threshold to claim GST credits.
What if I register late?+
The ATO can backdate your registration to when you first crossed the threshold. You then owe GST on sales made since that date, even if you didn't collect it from customers. Late registration penalties + interest can apply.
Not tax, legal or financial advice. Estimates only. Based on A New Tax System (Goods and Services Tax) Act 1999, ss 23-5, 23-15, 23-20; ATO public ruling GSTR 2003/13.. Tax law changes frequently — confirm current rates with the relevant revenue office and your registered tax agent before relying on these numbers.
Indicative only. Excludes one-off capital asset sales, input-taxed supplies and non-resident special rules.