Ask Paul: Does this viral money tip actually work?

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Dear Paul,

I saw a post on the internet recently that said, 'If you pay a month's extra repayment of your mortgage every year, your loan will reduce from 30 years to 17 years'.

Is this correct? I am 45 years old and recently started a 30-year, $500,000 mortgage.

Ask Paul Does this viral money tip actually work

I would like to retire mortgage-free when I am in my early 60s. - Katrina

I wish this was the case, Katrina. Like so much 'information' on the internet, it is a great attention-grabbing headline but, unfortunately, it is just not true. But your goal is still well within reach. Let's take a look at what you need to do to be mortgage free at 60.

This gives you about 15 years. What I'd like you to do is to go to your lender's website - they all have a mortgage repayment calculator these days. If not, do what I have done and go to any major bank's website.

I don't know the rate of interest you are paying, so I have gone with a standard rate offered by our big banks. Hopefully you have shopped around and have a better rate than this, but I think this will be a good guide. I'll use 6.3%, which has a monthly repayment of $3100. Let's now add an extra month's repayment, so about $260 a month.

With your $500,000 mortgage, this cuts nearly six years off your term.

It certainly helps but does not let you achieve your goal. To bring your mortgage to a zero balance in 15 years, you'll need to add $1200 a month. Obviously, if rates fall, getting the loan paid off will get a lot easier.

An extra $1200 a month is quite a whack. I know it may not be possible for you at the moment, but get started with what you can afford. I'd recommend you use an offset account - this way you can access your surplus payments if needed.

What I find is that as time goes by, our lives and finances change. You may earn more, interest rates may go down, meaning more of your repayments reduce the size of your loan, not just 
pay the interest.

Our lives are rarely static, so while I am sorry that one extra month's repayment won't do the job, I am confident that if you get started with additional repayments now, even if not the $1200 required, over time you will be able to get to a zero balance in your early 60s.

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Paul Clitheroe AM is the founder of Money and serves as the publication's editorial adviser. One of Australia's most trusted personal finance experts, Paul has spent decades helping Australians build wealth, manage debt and make smarter money decisions. He is widely known for host­ing the Money TV program and authoring best-selling personal finance books. Since launching Money in 1999, he has played a leading role in delivering practical, independent financial guidance to Australians. Paul is chair of InvestSMART Financial Services. He was the founding chair of Ecstra Foundation, a national not-for-profit focused on improving financial wellbeing, from 2018 to 2026, and led the Australian Government's Financial Literacy Board and Financial Literacy Australia from 2004 to 2019. In academia, Paul is chair in financial literacy at Macquarie University, where he is also a Professor in the School of Business and Economics. Ask Paul your money question. Due to volume, Paul cannot respond to questions posted in the comments section.