Mortgage Hub

Mortgage Calculators

The more you know, the more confident you can feel. Use our free calculators to estimate what you could borrow, check your deposit and plan your repayments before you talk to a bank.

  1. 1How much can I borrow?
  2. 2Is my deposit enough?
  3. 3What will my repayments be?
Free calculators

Crunching The Numbers

Start with borrowing power, check your deposit, then plan your repayments. Buying a rental? The investment calculator is built for that.

Best for: Starting your search

How Much Can I Borrow?

Answer a few questions about your income, living costs and debts to estimate the loan size NZ banks may consider.

  • Your estimated borrowing power
  • The property price range it points to
  • Whether income or the DTI limit sets your result
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Best for: Checking your deposit

Deposit & LVR Calculator

See your loan-to-value ratio and how your deposit compares with the Reserve Bank’s lending limits.

  • Your LVR as a percentage
  • The deposit usually needed for 80% LVR
  • How far you are from the next LVR band
Open Calculator
Best for: Planning your budget

Repayment Calculator

Work out weekly, fortnightly or monthly repayments, and see how extra payments change your loan term.

  • Repayments at your chosen rate
  • Total interest over the loan
  • Time and interest saved with extra payments
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Why use them

Why Use A Mortgage Calculator?

A few minutes with the numbers makes every later conversation with a bank or adviser easier.

Save Time Before You Search

Know your likely price range before you spend weekends at open homes, so you focus on properties that fit.

See The Real Cost Of A Loan

Repayments are only part of the picture. Seeing the total interest over the life of a loan shows what the term and rate really mean.

Test “What If” Scenarios

Change the rate, term, deposit or extra repayments and watch the result update, so you can compare options side by side.

Good to know

What Could Change Your Repayments?

Calculator results are a snapshot. These are the things that most often move the numbers.

Floating rates and the OCR

Floating rates can change at any time. They often move when the Reserve Bank changes the Official Cash Rate (OCR), which it reviews several times a year. If part of your loan is floating, your repayments can go up or down with it.

The end of a fixed term

A fixed rate stays the same until the term ends. After that, your loan moves to the rate on offer at the time, which may be higher or lower than the one you have now.

Changes to your loan or circumstances

Borrowing more, changing your loan term, or a change in income or household costs can all affect what you repay and what a bank will lend.

Testing best and worst cases

A simple way to use the calculators is to run your numbers at today’s rate, then again at a rate 1–2% higher. Seeing both results helps you understand how much room your budget has.

Next step

Turn Your Numbers Into A Plan

Calculators give you an estimate. A free chat with Sarah looks at your full situation and what lenders are offering right now.

Calculator results are estimates for general information only and are not financial advice or a loan offer.

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