A calculator will not replace a full application, but it gives you a realistic starting point before you commit time to the process. Knowing roughly what you can borrow, what a repayment schedule looks like, or how much a refinance could save helps you set expectations and ask better questions when you do speak with an adviser.
Treat the results as a guide rather than a guarantee — actual lending decisions depend on a full assessment of your income, expenses, credit history, and the specific policy of each lender, which is where a broker conversation adds the detail a calculator can't.
Five Free NZ Mortgage Calculators
Full Mortgage Calculator
Calculate your exact monthly payments across various interest rates and terms. Includes dynamic modelling for principal, interest, taxes, and insurance adjustments.
Borrowing Power Assessor
Find out exactly how much the banks will lend you. Factor in your gross income, existing unsecured debt, and living expenses to reveal your true capacity.
Refinance Savings Engine
Discover how much you could save by switching banks. Compares your current loan structure against current market specials and calculates immediate cashflow relief.
Extra Repayment Calculator
See exactly how much time and interest you can save over the life of your loan by adding a little extra to your regular mortgage repayments.
DTI Ratio Calculator
Check your debt-to-income ratio against the Reserve Bank's 6x owner-occupier and 7x investor caps before you apply.
Rental Yield Calculator
Work out gross and net rental yield on an investment property from purchase price, rent, and running costs.
Calculators only give you half the story.
The numbers are a great baseline, but true borrowing power depends on the specific lender's internal policies. Speak to an adviser to unlock your full potential.