The clearest NZ calculators on the web.
Take-home pay, mortgage repayments, GST, KiwiSaver, and dozens more. Free, no signup, fast on every device, current to the latest IRD and RBNZ rates.
237+Calculators built
Every calculator on the site
All 237 NZ calculators, grouped into five categories. Click any one to open it.
Mortgage & Property 34
Repayments, borrowing capacity, LVR, refinance, deposit savings, rental yield, and more.
Mortgage Repayment Borrowing Capacity LVR Mortgage Break Fee Mortgage Refinance House Deposit Savings First Home Buyer Interest-Only Mortgage Mortgage Offset Lump Sum Repayment Rent Affordability Rental Yield Mortgage Budget Mortgage Effective Interest Rate Principal Payback Milestone Mortgage Interest Rate Comparison Short-Term Rate Decision Mortgage Term Payment Comparison Historical Rates Analysis Debt Service Ratio Property Investment Rental Property Cash Flow Property Capitalisation Rate Property Location Cost Property New Build Property Development Feasibility Property Upsize Downsize Property Capital Value Change Real Estate Commission Commercial Property Purchase Reverse Mortgage Home Equity Tenancy Bond Rates and Water
Tax & Pay 89
Take-home pay, PAYE, GST, KiwiSaver, FBT, FIF, property tax. Current to 2026/27 IRD rates.
Take-Home Pay PAYE Hourly to Salary Pay Rise Bonus & Commission Tax Secondary Income Tax YTD Earnings Total Remuneration Comparator Lump Sum & Redundancy Tax Holiday Pay PAYG Holiday Pay (8%) Public Holiday Pay Sick Leave Annual Leave Final Pay Parental Leave Overtime Pay Minimum Wage Schedular Payments (WT) Tax Code Picker Salary vs Dividend Contractor vs Employee Income Tax Tax Refund Marginal Rate Visualiser Provisional Tax Working for Families Student Loan Repayment KiwiSaver Retirement KiwiSaver Fee KiwiSaver Contribution Comparison Superannuation ESCT First Home Withdrawal & Grant GST Reverse GST Business GST GST Basis Switcher GST Change of Use Adjustment GST De-registration GST Due Dates GST Entertainment GST for Tradies GST Mixed-Use Asset GST on Imports GST Registration Threshold GST Reverse Charge GST Second-Hand Goods GST Zero-Rated Supply Checker FBT FBT Attribution FBT Charity FBT Close Company Vehicle FBT De Minimis FBT Entertainment Decision Tool FBT Filing Frequency FBT GST Adjustment FBT Method Optimiser FBT Public Transport Exemption Checker FBT Quarterly Return FBT Shareholder Loan FBT Subsidised Transport FBT Work-Related Vehicle Exemption Checker FIF Calculator (FDR Method) FIF Calculator (CV Method) FIF Calculator (CM Method) FIF Calculator (DRR Method) FIF Guide CGT Bright-Line Test Property Sale Tax Triggers Subdivision Tax Mixed-Use Holiday Rental Interest Deductibility Property Chattels Depreciation Body Corporate Cost Rates & Insurance Affordability Business Income Tax Employer PAYE Cost PAYE Due Dates PAYE Square-Up Budget Comprehensive Personal Budget ACC Weekly Compensation Benefit Entitlement Child Support DPB Wage Subsidy Eligibility Checker Redundancy Entitlement
Loans & Investing 49
Compound interest, loans, term deposits, retirement projections, business finance.
Compound Interest Car Loan Personal Loan Business Loan Boat Loan Vehicle Loan Education Loan Holiday Loan Wedding Loan Hire Purchase Cost Loan Comparison Loan Amortisation Schedule Loan Payment Count Debt Consolidation DTI Term Deposit Retirement Investment Net Worth Emergency Fund Future Value of Annuity Present Value of Annuity Yield to Maturity CAGR Inflation Currency Converter ROI NPV IRR WACC CAPM Asset Turnover Ratio EBIT EBITDA EBT Gross Margin Profit Margin Selling Price Discount Depreciation Price Elasticity of Demand Price Elasticity of Supply Digital Ad Break Even Disposable Income Bill Split Cost of Living Comparison Flatting Costs Grocery Budget Moving Costs
Insurance 14
Sum-insured estimators and cover calculators for life, home, health, and more.
Everyday Essentials 51
Health, math, dates, units, daily NZ life. The bread-and-butter daily tools.
BMI Calorie Deficit BMR TDEE Max Heart Rate VO2 Max Running Pace Sleep Ovulation GFR Carbon Footprint Standard Scientific Graphing 3D Graphing Percentage Fraction Right Angle Triangle Trigonometry Slope-Intercept Form Inequality Linear Regression Logistic Regression ANOVA T-Test Chi-Square Probability Binomial Distribution Poisson Distribution Hypergeometric Distribution Negative Binomial Distribution Bessel Functions Age Date World Clock Stopwatch & Timer Work Hours & Timesheet Unit Converter Area Conversion Volume Conversion Fuel Cost Electricity Cost Road User Charges Cladding Profile Selection Password Generator Random Number Generator Random Picker Random Team Generator NCEA Grade GPA Metronome
Why this site
The same numbers as everywhere else. The calm, focused experience you wish other calculator sites had.
Live, the moment you type
Every input updates the result instantly. No "Calculate" button. No waiting for a page reload.
NZ rules, current rates
2026/27 IRD tax brackets, ACC levies, KiwiSaver tiers, RBNZ LVR thresholds. Reviewed every quarter.
Designed to be read
Big numbers, clean layout, the maths shown step-by-step underneath. No popup ads, no signup wall.