Our comprehensive suite of calculators is designed to demystify the complexities of financial, tax, and lending matters, making it easier for Kiwis to navigate these essential aspects of life. Whether you're in the market for a new home and need to understand your mortgage options, or you're sorting out your taxes and require a clear breakdown, Calculate.co.nz has you covered. Our range of calculators, including the GST calculator, PAYE calculator, Mortgage calculator, KiwiSaver calculator, and FIF calculator, are crafted to provide you with precise and actionable information.
Calculate.co.nz is New Zealand's largest collection of free online calculators, built for Kiwis who need fast, accurate answers to everyday financial, tax, and property questions. Over 250 calculators and in-depth learning guides cover everything from GST and PAYE to mortgage repayments, KiwiSaver projections, and overseas investment tax, all updated for the 2026/2027 tax year.
The GST calculator is the most-used tool on the site. Our PAYE and salary calculator breaks down income tax, ACC levies, KiwiSaver contributions, and student loan repayments. The tax refund calculator shows whether you are owed money from IRD. The FBT calculator covers motor vehicle, low-interest loan, and other fringe benefit scenarios. The work hours and timesheet calculator helps casual workers and contractors calculate weekly pay, and the final pay calculator covers termination entitlements under the NZ Holidays Act.
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Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.
All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.
Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.
Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.
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