New Zealand·Calculators·Fixed-term split

Fixed-term mortgage calculator

What a fixed period costs while it runs, and what you still owe when it ends.

Your numbers

Loan amount

$NZD

Fixed rate

% p.a.

Loan term

years

Fixed for

years

Owing when the fix ends:

$730,630

After 2 years at 5.89%

Monthly repayment$4,443.73

Interest during the fix$87,279

Principal repaid$19,371

Balance at the end$730,630

The entered rate holds for the fixed period and repayments stay level. What happens after the fix ends depends on the rate available then, which nobody knows today. Fees, offsets, redraws and extra repayments are not included. Payments, interest, balances and totals are estimates rounded separately for display. Calculations use unrounded payments and interest, so displayed payments may not sum to the total. This is not a lender cash-flow schedule. Amounts over 90 trillion are past what this calculates.

Source: Reserve Bank of New Zealand published averages · market average, not a lender offer · Effective 2026-09-30 · Checked 2026-10-10The arithmetic is the same in every country

Open the budget planner

Most of an early fix is interest

On a thirty-year loan, the first few years repay very little principal. That is why the balance at the end of a two-year fix looks close to where you started: the payments were mostly interest.

Choosing a fixed term is a bet on where rates go. A shorter fix costs less if rates fall and more if they rise; the calculator shows the cost of the period, not the odds.

Common questions

What happens when the fix ends?

You refix at whatever rate is available then, or move to floating. This calculator stops at the end of the fixed period because the next rate is unknown.

What does breaking early cost?

A break fee, which compensates the lender for the rate difference over the remaining fixed term. It is not calculated here.