GST Registration Threshold Calculator — Australia

If you are self-employed in Australia, you must register for GST once your taxable turnover exceeds the ATO registration threshold. Use this free calculator to track how close you are to the limit and when you need to register.

Australia GST Registration Threshold (2024/25)

  • Threshold: A$75,000 over any rolling 12-month period
  • Deadline: You must register within 30 days of exceeding the threshold
  • Voluntary registration: You can register voluntarily below the threshold to reclaim input GST

How to Use This Calculator

  1. Enter your monthly or quarterly income for the past 12 months
  2. See your rolling 12-month turnover total
  3. Check how close you are to the A$75,000 limit
  4. View the estimated month when you will exceed the threshold if growth continues

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