A Moneybren tool

NZ MORTGAGE BREAK FEE CALCULATOR

Rates have fallen since you fixed — is it worth paying the break fee to get out? This estimates the fee, the savings, and the honest answer for New Zealand borrowers.

Your numbers

$
% pa
% pa
The rate you’d refix or refinance at today.
mo
yrs
$
New banks often offer cash to switch.
$
Legal/discharge fees, typically $800–$1,500.
Breaking your fix looks
—

The ledger

Read this before calling the bank. Only your bank can tell you the real break fee — they calculate it on wholesale rates with present-value discounting, and by law can only recover their actual funding loss, not lost profit. That means this estimate (retail rate difference × balance × time) usually runs high — the real quote is often smaller. Quotes are typically valid for around 10 days and move with the market. Not modelled: cashback clawbacks from your current bank if you leave within their clawback window — ask. If rates keep falling after you refix, the same maths applies again.

How to use this calculator

Enter your loan, your current fixed rate, the months remaining, and today’s best rate. The calculator estimates the break fee, works out the repayment savings over the rest of your fixed window, adds any cashback, and gives a verdict.

Then ring your bank for the real fee in writing and re-run this with the actual number — the verdict updates instantly.

This is a tool only, and none of the information it produces is financial advice. Its accuracy is not guaranteed. Always check your own figures and get advice from your own financial professionals before making decisions.

A worked example

Say you fixed $500,000 at 6.5% a while back, and now the bank’s offering 4.65%. You want to break your fixed rate and grab the cheaper one.

The bank charges a break fee – and this is where people get blindsided. Because rates have fallen since you fixed, the bank is losing the fat margin it was counting on, and the break fee is designed to claw that back. On a big loan with a couple of years left to run, that fee can run into the thousands or tens of thousands.

The calculator gives you a ballpark so you can weigh the fee against the savings from the lower rate before you call the bank.

What most people get wrong about break fees

People think a break fee is a fixed “penalty.” It isn’t. It’s the bank recovering the interest it expected to earn – so it moves entirely with where rates have gone since you fixed.

Here’s the part that surprises everyone: if market rates have risen since you locked in, breaking your loan is often cheap or even free. The bank isn’t losing anything – it can re-lend your money at a higher rate, so there’s nothing to claw back.

So the break fee is really a signal. A big fee means you fixed at a good time and rates dropped. A tiny fee means rates went up and you’re sitting on a bargain. Either way, always get the bank’s actual break fee in writing and run it against your real savings before you pull the trigger – the calculator gets you in the ballpark, but the bank’s number is the one that counts.

This calculator and page are general information only and not financial advice. Everyone’s circumstances will vary – always do your own research and consult your own financial professionals before making decisions.