Contractor GST Threshold Calculator

This calculator helps New Zealand contractors and sole traders work out whether they must register for GST, based on how their turnover compares with the registration threshold. Registration becomes compulsory once your turnover from a taxable activity passes the threshold in any 12 month period, or you expect it to, and knowing where you stand matters because registering changes what you charge clients and what you can claim back. You enter your annual turnover (GST exclusive), the GST registration threshold, and the GST rate that applies. The calculator returns a clear verdict on whether you must register or registration is not yet required, your headroom to the threshold if you are under it, the GST you would add to your prices if you registered, and the resulting GST inclusive price. Use it to check your position as income grows through the year, to see what registering voluntarily below the threshold would mean for your pricing, and to plan ahead rather than discovering registration was compulsory after the fact. Because the threshold and GST rate can change, and the rules around expected turnover matter too, confirm the current figures and your situation with Inland Revenue before acting. This tool gives an indicative check only and is not tax advice, so treat the results as a starting point for a conversation with your accountant or Inland Revenue rather than a final answer.

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The registration threshold has been $60,000 in any 12 month period; check the current figure and rules with Inland Revenue. You must also register if you expect to exceed it. Estimate only, not tax advice.