Mortgage Refinancing

Mortgage refinancing

Your mortgage can work harder for you.

Refinancing and top-ups are the two most underused tools available to NZ homeowners. Refinancing can reduce what you pay. A top-up can unlock equity you’ve already built without requiring you to sell. Both are more straightforward than most borrowers expect, and both are easier to arrange through a mortgage broker than through your existing bank.

The Mortgage Guy reviews your current mortgage, compares it against what’s available today, and tells you plainly whether refinancing or a top-up makes sense, what it would cost, and what it would save. If it’s worth doing, we handle the switch.

If nothing needs changing, we tell you that too.

REFINANCING

Because they didn’t have to. This is not a cynical observation. It’s how the system works.

NEW BORROWERS
0.9–1.0% Cashback incentive on the loan value

LOYAL CUSTOMERS
0.25–0.4% Retention payment, only when threatened

COST OF STAYING
$30,000On a $500k mortgage over 20 years at 0.3% variance


  • Your current rate against what’s available across our lender panel today

  • Break fee calculation: whether exiting your current fixed term early is worth it after fees

  • Cashback clawback position: whether you’re still inside a clawback period and what that means for timing

  • Cashback incentives from new lenders: often $3,000 to $6,000 on a mid-size mortgage, which can offset switching costs

  • Total cost comparison: rate, fees, cashback, and clawback all factored into a single net position

  • Whether your current structure, fixed versus floating split, and loan term still fit your goals

MORTGAGE TOP-UPS

A mortgage top-up allows you to borrow against the equity you’ve built in your property without selling it. If your home has increased in value, or you’ve paid down a meaningful portion of your mortgage, there may be accessible equity sitting in the property that can be put to work.

Top-ups are commonly used for home renovations, investment property deposits, education costs, debt consolidation, and significant one-off expenses. They’re often the most cost-effective way to access a lump sum because the interest rate is tied to your mortgage rather than a personal loan or credit card.

The process is more involved than most people expect. A top-up is essentially a partial new mortgage application: the bank will assess your current income, expenses, and the purpose of the funds, and may require quotes for renovation work. Legal documentation is also required, typically adding $800 to $1,000 in solicitor fees. We manage this process on your behalf so it moves efficiently and doesn’t stall at a paperwork stage.

refinance mortgage nz

When a top-up makes sense:

  • Renovations that will add value to the property or improve your quality of life
  • An investment property deposit, using your home’s equity to fund the next purchase
  • Consolidating higher-rate debt into a single lower-rate facility
  • A significant one-off cost where the mortgage rate is materially cheaper than other borrowing options

When a top-up doesn’t make sense we tell you that too, and suggest what does.

WHO THIS IS FOR

REFINANCE OPTIONS NZ

  • You’re coming off a fixed term and want to know whether to refix, refinance, or do both
  • You locked in at a high rate in 2023 or 2024 and want to know what switching would save
  • You got a cashback when you last switched and aren’t sure if you’re still inside the clawback period
  • You feel like you’re probably overpaying but don’t know by how much or what to do about it
  • You have equity in your property and want to access it for renovations, investment, or another purpose
  • You assumed accessing equity meant selling, and didn’t know a top-up was an option
  • You want a mortgage broker to run the numbers and give you a clear recommendation, not a list of options with no guidance

The conversation costs you nothing. If there’s money to be saved or equity to be accessed, we’ll show you exactly what that looks like and what it takes to get there.

Based in Christchurch, proudly helping Kiwis become homeowners across New Zealand.

What Our Homeowners Have To Say

55+ Google Reviews | Rating

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Bethel profile picture
Bethel
5 days ago
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Very good to work with! Made buying a house easy as 👍
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Richard Spivey profile picture
Richard Spivey
36 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service from the whole team especially Jack, who came over after hours to help explain everything in deeper detail. Definitely recommend.
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Connor .McFetridge profile picture
Connor .McFetridge
67 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Ashley and Jack helped me and fiancée realize how close we where to home ownership and guided us through the whole process and now we are happily in our first home together. Thanks so much team!
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Kimberlee Bloor profile picture
Kimberlee Bloor
68 days ago
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Very satisfied , great work ethic In a situation that was far from ideal.
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Aaron Murray profile picture
Aaron Murray
71 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Fantastic to deal with - clear communication, great advice, and achieved an excellent outcome for us - highly recommend Ash. Outstanding service!
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Jess Shaw profile picture
Jess Shaw
71 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Ashley and Jack were a pleasure to deal with when refinancing my mortgage. They were very patient and always happy to explain things when I didn’t understand. I highly recommend their service
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Jacob profile picture
Jacob
73 days ago
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Ashley from the mortgage guy was helpful and responsive at all times was great to have work with him
Posted on Google Google
Kathryn Moore profile picture
Kathryn Moore
74 days ago
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Yvette Absalom profile picture
Yvette Absalom
78 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Ashley Newsome has been fantastic helping us acquire finance for our new home. His communication and approach were great throughout the whole process. We highly recommend him, and have even passed on his details to our friends and colleagues.
Posted on Google Google
samantha musson profile picture
samantha musson
84 days ago
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Such great service, helped me every step of the way buying my first house at 21yrs old.

Frequently Asked Questions

What is the difference between refinancing and refixing?

Refixing means staying with your current lender and choosing a new fixed term when your existing one expires. It’s simpler but limits you to what your bank offers. Refinancing means moving to a new lender entirely, which typically gives you access to new-customer rates and cashback offers your existing bank won’t volunteer. We assess both and tell you which produces the better outcome for your numbers. In many cases, the combination of a lower rate and a cashback at a new lender outweighs the modest effort of switching.

I got a cashback two years ago. Am I stuck?

Possibly not. Most cashback offers carry a two to three year clawback obligation, meaning you’d repay the cashback if you leave before that window closes. But even inside a clawback period, the maths sometimes still favour switching if the rate saving is large enough to offset what you’d repay. We calculate this precisely before you make any decision. You may have more flexibility than you assume.

How much equity do I need for a top-up?

Most banks will top-up a mortgage to a maximum of 90% of the property’s current value. So if your home is worth $900,000 and you owe $600,000, you have $210,000 of accessible equity before hitting the 90% threshold. The bank will also assess your income and expenses to confirm you can service the additional debt. We work through your equity position and serviceability in the assessment before you apply, so there are no surprises.

Is refinancing as complicated as it sounds?

Not when a broker manages it. The process requires a new mortgage application, legal documentation through your solicitor, and coordination between your old and new lender. Most borrowers who go direct find it time-consuming and frustrating. When we run it on your behalf, you’re largely removed from the back-and-forth. The main cost is the solicitor fee, typically $800 to $1,000, which is often more than offset by a cashback from the new lender.

When is the best time to refinance?

The clearest trigger is your fixed term expiry date. That’s when you have the most leverage: your existing lender wants to retain you and competing lenders want to win you. Outside of that, any significant change in rates, life circumstances, or financial goals is worth a review. If you locked in above 7% and are coming off that term now, the current rate environment makes this one of the better windows for refinancing in recent years.

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