3 reasons to not overpay a mortgage

Paul Summers reveals why he’s chosen to stop tackling his biggest debt.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

A mortgage is the biggest financial commitment many of us will ever take on. As such, it can make a lot of sense to pay off this debt as quickly as possible. Indeed, that’s why I’ve been trying to make overpayments to my own loan over the last few years.

Last month, however, I decided to stop doing so for three reasons.

Low rates    

First, a bit of context. In the last month, I switched to another fixed deal at a lower rate that I was previously paying. Much my father’s indignation (he grappled with double-digit percentages back in the 1990s), my new rate is a little under 2%. 

The fact that I’m now paying less than half the rate of interest I was before means there’s a bit of cash leftover. “So why not carry on making overpayments“, you might be wondering?

One reason relates to the product itself. Unsurprisingly, there are limits to how much a lender will let you pay off within a certain time frame. Go over this limit and you’ll be penalised. With repayments now less than they would have been had I not tackled the mortgage head-on in the past, this was a potential issue for me. It may be a risk for you too.

A second reason relates to the benefits that come from moving this extra cash into my Self-Invested Personal Pension (SIPP).

As I’ve mentioned before, SIPPs are a very attractive option for most long-term investors. In addition to letting you shield any investment profits from the taxman, having a SIPP means you’ll also receive tax relief from the government on any money you pay in. 

In practice, this means that someone with, say, £100 left in surplus cash every month will get an additional 25% on that amount if they put it in their SIPP, assuming they pay the basic rate tax. So, they’d have £125 rather than £100 to put to work.

My third reason follows on from the second. Right now, the yield generated by a simple exchange-traded fund that tracks the FTSE 100 is higher than the interest being charged on my mortgage debt (although, clearly, rates might rise in the future). As such, I stand a chance of generating more wealth over the long term by investing the spare cash, reinvesting the income I receive in my SIPP and allowing compounding to work its magic. 

A word of caution

Whether someone should switch from overpaying their mortgage to putting any surplus cash to work in the market will clearly depend on their circumstances. The latter option is far riskier.

Shares might plunge tomorrow and, in doing so, reduce the value of any money not used for the mortgage. Contrast this with the comfort felt from knowing you’re tackling your biggest debt faster than originally intended, thus potentially saving you thousands of pounds in the process.

There are ways of mitigating this risk. Buying liquid, diversified funds (such as that mentioned) rather than individual company stocks should temper some of the volatility. A commitment to investing for decades rather than a few months or years should also make it easier to deal with things on an emotional level.

Ultimately, both overpaying and investing are good ideas but the best option for someone will always be that which allows them to sleep at night. 

Paul Summers has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Mature black woman at home texting on her cell phone while sitting on the couch
Investing Articles

Could this cheap FTSE 100 stock be the next Rolls-Royce?

Paul Summers casts his eye over a battered-but-high-quality FTSE 100 stock. Is this the next top-tier company to stage a…

Read more »

ISA Individual Savings Account
Investing Articles

Hesitant over a Stocks and Shares ISA? Here’s a way to deal with scary markets

Volatile stock markets are scaring potential investors away from getting started with their first Stocks and Shares ISA in 2026.

Read more »

This way, That way, The other way - pointing in different directions
Market Movers

Standard Life’s announced a £2bn deal but its share price is largely unchanged. Why?

James Beard considers why the Standard Life share price didn’t take off today (15 April) after the group announced it…

Read more »

Happy parents playing with little kids riding in box
Investing Articles

Up 12% in a month, Hollywood Bowl is a UK dividend stock on a roll

This 5%-yielding dividend stock was one of the top performers in the FTSE 250 index today. What sent it flying…

Read more »

Close-up of children holding a planet at the beach
Investing Articles

Young investors are taking the stock market on a rollercoaster ride. Here’s how retirees can buckle up

Mark Hartley reveals the volatile impact that younger investors are having on the stock market and how UK retirees can…

Read more »

Two female adult friends walking through the city streets at Christmas. They are talking and smiling as they do some Christmas shopping.
Investing Articles

£7,500 invested in Aviva shares 5 years ago is now worth…

A lump sum pumped into Aviva shares half a decade ago has grown a lot. Andrew Mackie looks at the…

Read more »

Young female hand showing five fingers.
Investing Articles

Could £20,000 invested in these 5 dividend shares produce £14,760 of passive income over the next 10 years?

James Beard considers the potential of dividend shares to deliver amazing levels of passive income. Here are five that have…

Read more »

Workers at Whiting refinery, US
Investing Articles

At 570p, is it too late to consider buying BP shares?

Since the end of February, when the conflict in the Middle East started, BP shares have soared nearly 20%. But…

Read more »