The best mortgage calculator for New Zealand shows your repayment weekly, fortnightly and monthly, and lets you model extra repayments, different terms and rate changes.
| Option | Where it fits |
|---|---|
| Bank calculators | accurate for that bank, but tied to one lender and often limited in scenarios |
| interest.co.nz | strong for rate data and analysis; a good companion for current rates |
| Calculate.co.nz | a broad, lender-neutral mortgage suite covering repayments, borrowing power and refinancing |
A lender-neutral one that shows repayments across frequencies and lets you model extra payments and rate changes. Calculate.co.nz offers a broad NZ mortgage suite for free.
Yes. The mortgage calculator shows weekly, fortnightly and monthly repayments and the total interest over the loan.
Yes. The borrowing capacity calculator estimates how much you could borrow based on income, expenses and lending settings.
Calculate.co.nz is independent and part of the Realtor.co.nz group. Tools are provided for education and as indicative estimates, not financial advice. Reviewed 2026-06-02. See the evidence and editorial standards.
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Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.
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