Pay off debt or invest? A Motley Fool perspective

Should those wanting to start investing have paid off their debts first? ‘Not necessarily,’ says Paul Summers.

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.

debt scrabble piece spelling

A question people often ask when they first become interested in investing is whether they should attempt to pay off any existing debt they already have before dipping their toes in the stock market.

The knee-jerk response to this would be something along the lines of ‘of course you should!’. Given the vagaries of the markets, starting from as firm a financial footing as possible is both sensible and prudent.

It’s a little more complicated than that. Let me explain.

Expensive vs cheap debt

A lot depends on whether the debt in question is expensive or cheap.

An example of the former would be credit cards. These days, even the ‘best’ cards have interest charges of around 19% per annum. Having £5,000 on one of these would cost you a whopping £950 in interest a year. Unless you happen to be a skilled or fortunate short-term trader (a strategy we at the Fool suggest avoiding), you’re unlikely to make the same kind of return on the stock market in just twelve months. Even if you do, the odds are stacked against you repeating the feat the following year. There’s only one Warren Buffett, after all!

There is, however, a caveat to this.

Many credit cards give their owners a holiday period in which no interest is charged. Using the above example, having £5,000 on a 0% credit card and paying the debt off in regular installments over a number of years is financially savvy so long as you can remain disciplined. In this scenario, throwing any extra cash at the markets might be more appropriate.

The same logic could be applied to mortgages.

If you’ve taken out a mortgage (or just a personal loan) over the last few years, you’re likely to be paying a low rate of interest. In this situation, the return you get from the stock market could be higher. Bear in mind, however, that interest rates are only likely to rise moving forward and that the option of making overpayments is still worth considering. 

Given that a mortgage represents a long-term debt for most people, waiting until the loan is fully paid off could also be detrimental to your wealth since you are restricting your ability to really benefit from your investments compounding over time. As the adage goes, “it’s not timing the market, it’s time in the market” that ultimately leads to riches.

Taking the above into account, it may therefore make sense to drip-feed any remaining cash into the market through a tax-efficient stocks and shares ISA. Arguably the ‘safest’ (and cheapest) way of doing this is to invest in a few index trackers or exchange-traded funds, giving immediate diversification and a dividend stream to reinvest. Those with more appetite for risk could buy shares in large, resilient companies with dependable payouts. Only once they feel comfortable should attention be turned towards some of the market’s smaller constituents.

Bottom line

When it comes to debt, it makes sense to clear any high-interest debt first (and, ideally, have some kind of emergency fund in place). Once sorted, a balance between paying a mortgage/saving for a deposit and putting any spare cash to work in the stock market makes sense.

As always, however, a sober evaluation of your financial goals and risk tolerance is essential before making any big money decisions.

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

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

ISA or SIPP? Here’s 1 advantage and 1 disadvantage of both

SIPPs and Stocks and Shares ISAs both have potentially attractive features, as well as downsides. Christopher Ruane looks at some…

Read more »

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

£1,000 invested in Lloyds shares 6 weeks ago is now worth…

Lloyds shares have been on a huge run in the last couple of years. But is a 15% pullback in…

Read more »

Man smiling and working on laptop
Investing Articles

After the FTSE 100’s slump, these bargain shares are calling!

Are you on the lookout for top cheap stocks to buy? Royston Wild reveals three FTSE 100 value shares he's…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

Worried about a stock market crash? Here are 2 things you should know

A stock market crash may look plausible, but it’s far from a done deal. Still, if markets do wobble, I…

Read more »

piggy bank, searching with binoculars
Investing Articles

This FTSE 100 stock soared 900% — but after a 25% crash, is the rally over?

After blowing away the FTSE 100 in 2025, this miner has hit turbulence in 2026 — Andrew Mackie investigates what’s…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

How much do I need in an ISA for a £700 second income?

Investing in dividend shares can be a great way to target a second income from a Stocks and Shares ISA.…

Read more »

Businessman with tablet, waiting at the train station platform
Investing Articles

If there’s a stock market crash this week, will you be ready?

Christopher Ruane explains why he's not phased by the inevitability of a stock market crash -- but is actively preparing…

Read more »

Mindful young woman breathing out with closed eyes, calming down in stressful situation, working on computer in modern kitchen.
Investing Articles

£15,000 invested in Diageo shares 3 weeks ago is now worth…

Bad times for Diageo shares! The last three weeks have seen yet another drop, but is this a time to…

Read more »