NZ Provisional Tax Calculator
Estimate your provisional tax instalments for the New Zealand tax year. Enter your prior year residual income tax (RIT) and estimated income growth to calculate your three payments due on 28 August, 15 January, and 7 May.
NZ Provisional Tax Calculator — Instalment Payment Estimator
Free New Zealand provisional tax calculator. Estimate your three annual instalments using the standard or uplift method. Plan your 28 August, 15 January, and 7 May payments.
Provisional Tax Instalments
Provisional tax is the pay-as-you-go system for self-employed individuals and businesses in New Zealand. You must pay provisional tax if your residual income tax (RIT) from the prior year was over $5,000. The standard method divides your current-year estimate into 3 instalments. The uplift method adds 5% to your prior year RIT. Due dates: 28 August, 15 January, and 7 May. You can use the GST ratio method if you're registered for GST.