Home Loan Repayment Calculator — New Zealand
Work out your repayments, what the loan costs in total, and how much an extra repayment saves you. Figures below assume 6% over 30 years. Free, and no sign-up.
Common New Zealand loan amounts
| Loan amount | Monthly repayment | Total interest |
|---|---|---|
| $400,000 | $2,398 | $463,353 |
| $500,000 | $2,998 | $579,191 |
| $600,000 | $3,597 | $695,029 |
| $700,000 | $4,197 | $810,867 |
| $800,000 | $4,796 | $926,706 |
| $1,000,000 | $5,996 | $1,158,382 |
Frequently asked questions
How are New Zealand home loan repayments calculated?
Repayments use the standard amortisation formula: the balance accrues interest at the periodic rate, and a level repayment covers that interest plus a slice of principal. Early payments are mostly interest; later ones are mostly principal.
Does paying extra actually help?
Yes, substantially. Extra repayments come straight off the principal, so they reduce every future interest charge. On a long loan even a small regular amount can cut years off the term.
Is this calculator free?
Yes. It is free, requires no account, and nothing you enter is saved or sent anywhere — the calculation runs entirely in your browser.
Work out your own numbers
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Estimate only. Assumes a fixed rate and no fees; lenders accrue interest daily and may charge account or discharge fees. Not financial advice.