#1 The Mortgage Buster

01 July 2022
Peter Norris

Author: Peter Norris

Managing Director & Mortgage Adviser

While most Kiwis take 30+ years to pay off their mortgage … some manage to smash it down in half that time.

Some investors I’ve been working with this year (Charlie and Sarah) are on track to become mortgage free before they both turn 43.


To do it, they’re using the Mortgage Buster strategy.

Here’s how it works.

What is the Mortgage Buster strategy?

This strategy is simple … but it’s an effective way to change your behaviour to pay off your mortgage faster.

And you do it by changing how you set up your bank accounts.

To set it up, you split your home loan into two parts:

  • A big chunk that you’ll pay down as slowly as possible.
  • And a smaller chunk that you’ll attack aggressively.

The idea is – by biting off a small part of your mortgage, you can chew through it faster.

This changes your behaviour since you now have a set goal.

Let’s be honest. You won't see a noticeable difference if you put $200 extra into the giant abyss of a $500,000 mortgage.

Compare that to paying $200 off a $10,000 chunk of your mortgage. The difference will appear bigger, so you’ll be more motivated.

How do I set up a Mortgage Buster?

Here’s how to set up your Mortgage Buster –

Step 1: Decide how much extra you can pay off against your mortgage, e.g. $200 per week. That’s about $10,000 a year – your savings goal for the year.

Step 2: Set up a revolving credit or offset account for that $10,000 chunk of your mortgage (more on below).

Step 3: Set the rest of the loan up to be paid off for as long as possible (e.g. 30 years)

If you’re unfamiliar – revolving credit and offset accounts are mortgages that give you more flexibility.

How does revolving credit work? It’s like a massive overdraft.

If you put more money into your revolving credit, the bank charges you less interest.

And like an overdraft, you can also take that money out anytime. 

So if you save too much … and then get an unexpected car repair bill, you can still access the cash.

That’s not possible with a regular mortgage.

Once you’ve paid off this chunk of your mortgage within the year … bite off another chunk and do it again.

This sounds simple, but the following case study shows it can have significant results.

Mortgage-free by 43

Charlie and Sarah had a $400,000 mortgage on their home.

That was a few years ago, and when I first met them, they wanted to pay it off before they both turn 43.

They decided to use the Mortgage Buster.

Before using this strategy, the pair had a 30-year mortgage and were on track to pay it off by the time they were 59.

First, Charlie and Sarah figured out they could put an extra $300 a week towards their mortgage. That’s $15k a year.

So they set up their revolving credit at $15,000 and fixed the rest of their mortgage ($385,000) to be paid off over 30 years.

At the end of the first year, their revolving credit was fully paid off, and they had $15k available in their account (remember, it’s like an overdraft).

So they took out that money and paid it off against their larger loan.

Then they started again … paying off their $15k revolving credit over the next year.

This became a bit of a game, and Charlie and Sarah challenged themselves to transfer more and more money into the account to decrease their mortgage even faster.

Right now, the pair are on track to pay off their mortgage by the time they are both 43.

Want to see if this strategy can help you smash down your mortgage?

Get in touch!

Peter Norris

Peter Norris

Managing Director & Mortgage Adviser

Hi, I'm Peter, managing director here at Catalyst. I have a passion for property and helping people get the money they need to invest in property. I've spent 10 years in the broker market dealing with property portfolios of all sizes and honed my skill working with investors to help achieve their financial goals. Outside of work, you'll find me with my family or on the football field.

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