Empowering hundreds of thousands of Kiwis with free financial education and tools. From Kaitaia to Invercargill, Calculate.co.nz is helping New Zealanders make informed financial decisions every single day.
"I built New Zealand's best free calculator and financial literacy website because access to clear, reliable knowledge should never depend on what you can afford, and empowered individuals strengthen the whole community."
- James Graham, Founder
Trusted by employees, contractors, business owners, property investors, and families across New Zealand
Calculate.co.nz is New Zealand's most comprehensive free financial resource, combining 265+ powerful calculation tools with 100+ expert educational guides. Whether you're calculating your PAYE tax (2024/25 rates: 10.5%, 17.5%, 30%, 33%, 39%), planning mortgage repayments, checking your LVR (80% standard), optimizing KiwiSaver contributions, managing GST (15%), navigating FIF tax (foreign investments >$50k), or learning about debt payoff strategies, financial independence, or sinking funds - our platform provides accurate, NZ-specific tools and comprehensive guides, completely free with no paywalls or premium tiers.
Popular NZ calculators: GST Calculator (add/remove 15% GST), PAYE Calculator (income tax, ACC levies, student loan deductions), Mortgage Calculator (repayments, interest costs), Borrowing Capacity Calculator (DTI ratios, bank assessment), LVR Calculator (deposit requirements, 20% standard), KiwiSaver Calculator (3% employer contributions, $521 government contribution, retirement projections), Provisional Tax Calculator (self-employed tax planning), Student Loan Calculator (12% repayment above $24,128 threshold), and FIF Calculator (FDR, CV, DRR methods for offshore investments).
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 265 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 graphing calculator and 3D graphing calculator are free browser-based tools for NCEA maths students. The NCEA grade calculator works out your qualification status, endorsements, and University Entrance eligibility from your credits. The trigonometry calculator solves right triangles and any triangle with full workings, ideal for NCEA Level 2 and 3 maths. The investment calculator projects savings growth with NZ PIE tax rates applied. The probability calculator covers all types from basic through to binomial, normal, and Poisson distributions.
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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.
All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.