Income tax Dates
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MAR 31Final date for ratio option provisional tax applications.
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APR 7End-of-year income tax and Working for Families bills are due if you have an extension of time to file your income tax return.
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MAY 7Provisional tax payments are due if you have a March balance date and use the standard, estimation or ratio options.
Use this calculator to work out your basic yearly tax for any year from 2011 to the current year.
It will not include any tax credits you may be entitled to, for example the independent earner tax credit (IETC).
It also will not include any tax you've already paid through your salary or wages, or any ACC earners' levy you may need to pay.
Gather your information
You'll need your total taxable income.
Enter your details
Follow the steps in the calculator. You can save your result as a PDF for your own records.
This calculator is for your personal use only. It does not send information to Inland Revenue or make changes to your records with us.
5 minutes
Income tax calculator
This calculator will work out tax on your annual income using rates from 2012 to the current year
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Last updated:
01 Apr 2025