A break fee, or break cost, is what a bank can charge if you end a fixed-rate mortgage early, or repay more than your loan allows. It surprises people because it can be large, and it is not a penalty the bank invented to punish you; it is meant to recover the bank's loss when you break a rate it had locked in. Understanding it stops nasty surprises when selling, refinancing, or repaying.
When you fix, the bank arranges funding to match. If you break and rates have dropped, the bank can only re-lend that money at a lower rate, so it loses the difference. The break fee recovers that, which is why falling rates make it bigger.
The core of a break fee is the gap between the rate you locked and the rate the bank could get now for the time left on your fixed term, applied to your balance. The bigger that gap and the longer the remaining term, the bigger the fee.
| Since You Fixed | Likely Break Fee |
|---|---|
| Rates fell | Larger, since the bank loses the higher rate |
| Rates rose | Often small or nil |
Banks must tell you the break fee when you ask. Never assume; request the current figure before you commit to selling, refinancing, or a large repayment, so you can factor it in.
Breaking is not always a bad idea. If refinancing to a much lower rate, or restructuring, saves more than the break fee costs, it can pay off. The key is to compare the fee with the real saving, not just the headline lower rate.
Our Mortgage Break Fee Calculator gives an indication, but always confirm the actual figure with your bank, as their calculation is the one that counts.
People break a fixed loan to chase a lower rate, then get a large bill. Always ask for the figure first.
Many fixed loans let you repay a certain amount extra each year for free. Going over it can trigger a fee, so check the limit.
A lower advertised rate elsewhere may not beat the break fee plus costs. Compare the real saving.
Break fees change daily. A figure from last week may be very different today. Use a current quote.
See our Refinancing and Fixed vs Floating guides. Final word: a break fee recovers the bank's loss when you exit a fixed rate early, and it is largest when rates have fallen. It is not always a barrier; sometimes the saving beats it. Always get the exact, current figure before you act. This is general information, not advice; talk to your bank or a mortgage adviser.
Quiz on Mortgage Break Fees (20 Questions)
If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.
Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.
All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.
Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.
Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.
Calculate.co.nz is hosted in Auckland via SiteHost new Zealand.
All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.
© 2019 to 2026 Calculate.co.nz. All rights reserved.