New Zealand · NZD · Mortgage and repayment

New Zealand Amortization Schedule

Published by REO Technologies · Publisher contact: Abdul Raheem. Explanation and example arithmetic revised 2026-10-26; source-specific dates are stated separately. No licensed financial review is claimed.

Generate full schedules/CSV and compare permitted recurring or lump-sum extra principal.

Enter current figures from your documents and quotes. Budget settings are editable. Inputs stay in this tab and are not saved or sent by the calculator.

Reference scope documented 2026-10-25. Use actual quotes and provider-confirmed amounts. KiwiSaver standard rates changed in April 2026; old grant and insurer assumptions are not applied. RBNZ lending-flow controls are not personal approval rules.

Your inputs

Current / proposed mortgage principal (NZD)Enter your current figure; zero explicitly excludes an optional cost.

Actual / scenario annual nominal rate (%)Enter your current figure; zero explicitly excludes an optional cost.

Remaining repayment yearsMatch the contract or select a clearly labeled planning scenario.

Payment-frequency model

Permitted extra principal each payment (NZD)Enter your current figure; zero explicitly excludes an optional cost.

One-time permitted extra principal (NZD)Enter your current figure; zero explicitly excludes an optional cost.

Apply one-time extra at payment periodMatch the contract or select a clearly labeled planning scenario.

Permitted year-end extra principal (NZD)Enter your current figure; zero explicitly excludes an optional cost.

Accelerated weekly / biweekly scenario?

How this estimate works

Charge equivalent-period interest on opening principal, apply scheduled/extra principal, then cap the final payment at balance plus accrued interest. Year-end extras occur after each complete scheduled year.

Assumptions and limits

Amounts are NZD. Enter actual current rates, balances and cost quotes; no bank offer or personal eligibility is invented.
Constant-rate monthly nominal model or an explicitly labeled equivalent-period scenario. Actual daily accrual, payment dates, fees, rate fixes and lender rounding can differ.
Educational arithmetic only. Provider, lender, IRD, tenancy and legal eligibility need independent confirmation. A repayment period differs from a fixed-rate deal period.
The 26/52-period model is not an actual lender daily calendar. Use only extras allowed under the contract; penalties are not automatically quoted.

References and further reading

Worked New Zealand example: New Zealand Amortization Schedule

This is a hypothetical arithmetic example in NZD, not a current lender quote, market observation or borrower record. The same calculator model produces the figures below. Its input assumptions are shown so that you can reproduce or change the scenario.

Assumed input	Illustration value
Current / proposed mortgage principal (NZD)	520,000
Actual / scenario annual nominal rate (%)	5.99
Remaining repayment years	30
Payment-frequency model	Monthly
Permitted extra principal each payment (NZD)	0
One-time permitted extra principal (NZD)	0
Apply one-time extra at payment period	1
Permitted year-end extra principal (NZD)	0
Accelerated weekly / biweekly scenario?	No

Calculated measure	Result
Scheduled principal & interest per payment	NZ$3,114.32
Projected interest with entered extras	NZ$601,155.32
Interest saved versus the same plan without extras	NZ$0.00
Payments until payoff	360
Repayment years saved	0
Ending balance	NZ$0.00

Amounts use unrounded intermediate arithmetic and are rounded only for display. Selecting different costs, rates, payment dates or terms changes the result; no illustration value is prefilled into your personal financial fields.