Provisional Tax Calculator NZ
Standard-option provisional tax instalments.
NZ$
The 'RIT' figure from last year's IR3 / income tax assessment
Provisional tax for the year
$26,250.00
Three instalments of $8,750.00
| Total provisional tax (105% of last RIT) | $26,250.00 |
|---|---|
| 28 August instalment | $8,750.00 |
| 15 January instalment | $8,750.00 |
| 7 May instalment | $8,750.00 |
About this calculator
Provisional tax is paid by self-employed and rental-property owners during the year, towards their year-end tax liability. The standard option is 105% of last year's residual income tax (RIT), spread across three instalments.
- Three instalments per year for standard-option taxpayers (28 Aug, 15 Jan, 7 May).
- Threshold: provisional tax kicks in when last year's RIT exceeded $5,000.
- AIM (Accounting Income Method) and estimation methods are alternatives but riskier — talk to your accountant.
Frequently asked questions
What if my income drops?
You can switch to the estimation method, but if you under-pay you owe interest. Many taxpayers stick with the safer standard option.
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Calculator NZ provides general information only. For decisions with significant financial, medical or legal consequence please consult a qualified professional.