How much do extra mortgage repayments save in NZ?

On a $600,000 mortgage at 6.5% over 30 years, paying an extra $100 per week saves approximately $120,000 in interest and reduces the loan term by nearly 7 years.

What is a good mortgage interest rate in NZ?

NZ mortgage rates vary with the OCR and global conditions. As of 2025, fixed rates typically range from 5.5% to 7.5% depending on the fixed term.

How much deposit do I need to buy a home in NZ?

Most NZ banks require a 20% deposit for owner-occupiers (80% LVR). First home buyers may qualify for the Kāinga Ora First Home Loan with just 5% deposit.

Can I use KiwiSaver to buy my first home in NZ?

Yes. After contributing to KiwiSaver for at least 3 years, first home buyers can withdraw most of their balance (keeping $1,000) to put toward a deposit.

Calculators • Mortgage

Mortgage Calculator

Repayments, total interest, LVR and rate stress-test — plus first home buyer tools including KiwiSaver and borrowing power.

Updated May 2026 Data: MBIE, LINZ, RBNZ Free — no signup

Quick Presets

Loan details

Property Price

Deposit

Interest Rate

current rates →

Loan Term

yrs

Repayment Type

Frequency

Loan to Value Ratio (LVR)

80% High LVR

Deposit $150,00020%

Loan Amount $600,00080%

Your Results Stress tested

Weekly Repayment

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Principal & Interest

30 years • 6.5% • Weekly

Total Interest

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Total Cost

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Loan Amount

—

LVR

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Rate Stress Test

6.5% (current)

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baseline

7.5% (+1%)

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8.5% (+2%)

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NZ bank-aligned

Calculations use NZ lending standards and guidelines.

Private & secure

Your data stays private and is never shared.

Up to date

Live interest rates and policy updates.

Trusted by Kiwis

Used by homeowners, investors and professionals across NZ.

All results are general information only and do not constitute financial advice. Figures are estimates based on the details you enter — always do your own due diligence or speak to a licensed financial adviser before making decisions.

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