Why a margin of safety is crucial for all investors

Obtaining a margin of safety could make the difference between success and failure.

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 margin of safety is arguably one of the most misunderstood aspects of investing. It’s something which many investors are familiar with, but as a concept its importance is often underestimated. Similarly, it is often over-complicated, which can lead to confusion and a less optimum investment strategy. However, by utilising a margin of safety effectively, it can lead to lower risks and higher potential rewards in the long run.

Simplicity

A margin of safety is simply seeking to buy a company at a discount to its intrinsic value. In other words, if an investor believes a company is worth $1 per share, buying it at $0.80 would represent a margin of safety of $0.20 per share. Put simply, it is a means of factoring in potential challenges which may face the company, both internal and external, and which may affect its share price in future.

Effect on risk and return

By seeking to buy shares for less than they are worth, it may be possible to reduce risk. Clearly, no investment is risk-free, and shares will usually experience some periods of high volatility when held for the long term. However, a stock which trades for less than it is worth may have less downside risk than its sector peers, since the market may have already priced in potential challenges.

Similarly, a wide margin of safety may mean potential rewards are also increased. If an investor is able to purchase a company for less than it is worth, then clearly their gains may be higher than for an investment in a company which is purchased at fair value.

Valuation

Of course, estimating the intrinsic value of a company is never a straightforward exercise. It is hugely subjective and the methods used vary greatly between different investors and different industries.

However, when one investor applies a consistent method of valuing a business across a sector or even an index, it can mean they are able to judge which stocks offer the greatest margins of safety. By focusing on those shares above others, it may be possible to generate a wide margin of safety for an entire portfolio and improve its overall risk/reward ratio. In time, this may lead to improved investment performance.

Psychology

Seeking a wider margin of safety may also help an investor’s mental state. Through buying stocks for what they view as a discount to their intrinsic value, an investor may feel more relaxed even during periods of financial stress when share prices fall. Knowing they have bagged themselves a bargain based on the quality, prospects and financial strength of a business may allow an investor to stay calm during bear markets. It may also enable them to avoid overpaying for a company towards the end of a Bull Run.

Clearly, seeking a margin of safety is a relatively simple idea. However, it can lead to better investment prospects across indices, industries and stocks. As such, it seems to be a crucial part of investing for even the most experienced investors.

More on Investing Articles

British bank notes and coins
Investing Articles

Here’s a £30-a-week plan to generate passive income!

Putting a passive income plan into action need not take a large amount of resources. Christopher Ruane explains how it…

Read more »

Close-up of British bank notes
Investing Articles

Want a second income? Here’s how a spare £3k today could earn £3k annually in years to come!

How big can a second income built around a portfolio of dividend shares potentially be? Christopher Ruane explains some of…

Read more »

Close-up of British bank notes
Investing Articles

£20,000 for a Stocks and Shares ISA? Here’s how to try and turn it into a monthly passive income of £493

Hundreds of pounds in passive income a month from a £20k Stocks and Shares ISA? Here's how that might work…

Read more »

Snowing on Jubilee Gardens in London at dusk
Investing Articles

£5,000 put into Nvidia stock last Christmas is already worth this much!

A year ago, Nvidia stock was already riding high -- but it's gained value since. Our writer explores why and…

Read more »

Investing Articles

Are Tesco shares easy money heading into 2026?

The supermarket industry is known for low margins and intense competition. But analysts are bullish on Tesco shares – and…

Read more »

Smiling black woman showing e-ticket on smartphone to white male attendant at airport
Investing Articles

Can this airline stock beat the FTSE 100 again in 2026?

After outperforming the FTSE 100 in 2025, International Consolidated Airlines Group has a promising plan to make its business more…

Read more »

Investing Articles

1 Stocks and Shares ISA mistake that will make me a better investor in 2026

All investors make mistakes. The best ones learn from them. That’s Stephen Wright’s plan to maximise returns from his Stocks…

Read more »

Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together
Investing Articles

I asked ChatGPT if £20,000 would work harder in an ISA or SIPP in 2026 and it said…

Investors have two tax-efficient ways to build wealth, either in a Stocks and Shares ISA or SIPP. Harvey Jones asked…

Read more »