5 Common Mortgage Refix Mistakes Kiwi Homeowners Make

For many Kiwi homeowners, refixing a mortgage can feel like a routine admin task.

You get the email from the bank, pick a rate, lock it in, and move on.

But after helping homeowners through thousands of refixes over the years, we’ve seen how this moment can have a much bigger impact than many people realise.

A refix isn’t just about choosing an interest rate — it’s an opportunity to review whether your mortgage is still working well for your goals, cash flow, and future plans.

The good news? A few small conversations now can potentially save stress and money later.

Here are five of the most common mortgage refix mistakes we see Kiwi homeowners make.

1. Leaving It Until the Last Minute

Most banks will contact you around 60–90 days before your fixed rate expires.

That gives you a valuable window to review your options properly — but many homeowners understandably put it aside for “later”.

Then suddenly the expiry date is only a few days away, and the decision becomes rushed.

When refixing gets left to the last minute, it can mean missing the chance to:

• Compare current interest rate options

• Review different fixed-term strategies

• Check whether your loan structure still suits your situation

• Plan ahead for changes in income, family, or future goals

A mortgage refix works best when it’s treated as a financial check-in rather than a quick admin task.

2. Automatically Accepting the Bank’s Default Option

When a fixed rate expires, many loans automatically move onto a floating rate unless you choose a new option first.

In most cases, floating rates are higher than available fixed rates, which can mean paying more interest than necessary — even if it’s only for a short period.

Some homeowners also simply accept the first rate their bank offers without exploring other options.

But every household’s situation is different, and the “default” option isn’t always the best fit.

A quick review with a Mortgage Adviser can help you understand what’s available and whether there are smarter ways to structure things moving forward.

3. Fixing the Entire Mortgage on One Term

It often feels simpler to lock the entire mortgage into the same fixed term.

But while simple can feel easier, it can also reduce flexibility.

Many homeowners choose to split their mortgage into different portions with different fixed terms instead.

For example:

• One portion fixed for 12 months

• Another fixed for 2 or 3 years

This approach can help spread interest rate risk and avoid having your entire mortgage reset at the same time.

It also creates more flexibility if rates or your circumstances change in the future.

4. Focusing Only on the Interest Rate

Interest rates matter — but they’re only one part of the bigger picture.

One of the most overlooked parts of a refix is reviewing the structure of the mortgage itself.

Depending on your goals and the lending options available, there may be opportunities to improve flexibility through features like:

• Offset accounts

• Revolving credit facilities

• Additional repayment flexibility

For homeowners with strong savings habits or variable income, the right structure can potentially help reduce interest faster while still keeping access to funds when needed.

5. Forgetting to Review Your Bigger Financial Goals

A mortgage refix is also a good time to step back and ask:

• Are we planning to upgrade homes in the next few years?

• Are we thinking about buying an investment property?

• Do we want to pay debt down more aggressively?

• Are there upcoming lifestyle or income changes we should prepare for?

Your mortgage should support where you want to go next — not just where you are today.

Sometimes even small structural adjustments now can create significantly more flexibility later.

A Refix Is More Than Just a Rate Decision

For most homeowners, refixing happens every one to three years.

That means it’s one of the most regular opportunities you have to review and optimise your mortgage strategy.

The key is treating it as more than simply choosing a new rate.

If your fixed rate is coming up for renewal this year, now could be a great time to review whether your mortgage structure still fits your goals and financial position.

Every household is different, and sometimes a short conversation can uncover options you may not have realised were available.

If you’d like help reviewing your upcoming refix or simply want a second opinion on your current setup, the team at MyMoney is always happy to help.