Mortgage calculators

Six calculators covering the mortgage maths New Zealanders search for. All free, none gated, nothing stored. Each takes the interest rate as an input rather than quoting one, because a published rate table goes stale within days.

• Mortgage repayment calculator

  Work out mortgage repayments in New Zealand weekly, fortnightly or monthly, see total interest over the term, and test what paying extra saves you.

• Borrowing power calculator

  See what loan size a given repayment supports at a bank test rate, and what share of your income it would take. General information, not a lending decision.

• Mortgage break fee calculator

  Estimate the order of magnitude of a fixed mortgage break cost in New Zealand, and understand why only your bank can give you the real number.

• Offset vs revolving credit calculator

  Compare an offset mortgage against a revolving credit facility and against simply earning interest on your savings, using your own balances and rates.

• First home deposit calculator

  Add up your deposit from savings, a KiwiSaver first home withdrawal and any gift, then see your loan-to-value ratio and the gap to a 20% deposit.

• Refinance savings calculator

  Compare your current mortgage against a new rate, net of break costs, legal fees and any cashback, and find the break-even point in months.

This is a general estimate, not financial advice. We are not a mortgage broker and hold no FMA licence — what this site is and is not.