We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

These 3 retirement savings mistakes could cost you a fortune

Rupert Hargreaves explains how you can avoid these three costly retirement savings mistakes before it’s too late.

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.

To avoid making the worst retirement savings mistakes, you need to be realistic about your future spending expectations and savings challenges. It pays to do as much research as possible, taking the bull by the horns and getting control of your retirement savings pot before it controls you.

With that in mind, here are three major mistakes that could cost you a fortune in later life, as well as my tips on how to avoid them.

XXX

1. Putting off saving

The most common mistake retirement savers make is to put off saving. The fact of the matter is, the sooner you start saving, the better.

The longer you have to save, the less money you will have to contribute each month. For example, if a saver put away £100 a month for 50 years with an average annual interest rate of 5%, from a standing start, they would accumulate a pension pot worth £268,000.

However, if the same saver started saving for the future with only two decades to go until retirement, a contribution of just £100 a month would only build a pension pot of £41,000.

The saver would have to put away around £600 a month over 20 years to accumulate the same level of savings they would have if they started three decades earlier.

2. Not saving enough

The second common mistake many retirement savers make is not saving enough for retirement.

It is quite challenging to figure out how much money we will need in order to live comfortably in retirement, but there is a simple way to get to a ballpark figure. The multiply-by-25 rule gives you a rough idea as to how much money you will need to have saved by the time you come to retire based on your targeted annual income.

The formula suggests that a saver targeting an annual income of £20,000 would need to have put away £500,000 by the time of retirement. When you have this figure, you can work backwards to try and figure out how much money you should be putting away every month.

3. Invest your money

Over the past 100 years, UK stocks have produced an average annual return of around 5.5% after inflation.

Today, you’ll be lucky to get an interest rate of 1.5% on cash savings, that’s before taking inflation into account. After factoring in inflation, the rate of return you are likely to receive will be negative. It is going to be impossible to build an acceptable pension pot with your money losing purchasing power every year. 

In my opinion, the best way to invest your money for retirement is to use a low-cost passive index tracker fund. 

A fund that tracks an index like the FTSE 100 or FTSE 250 will give you exposure to some of the biggest listed companies in the UK without you having to do any work. It is also relatively straightforward to buy these funds. They usually only charge a few tenths of a percent in management fees every year. 

Using the numbers above as an example, to accumulate a pension of £500,000 before retirement, I estimate a saver will need to put away £160 a month for 50 years to hit this target at a real annual rate of return of 5.5%. It would be impossible to hit this target without investing your cash unless you’re willing to contribute much more every month. 

Rupert Hargreaves owns no share 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 Retirement Articles

Mature black couple enjoying shopping together in UK high street
Investing Articles

Here’s how to target retiring as a millionaire on a £60k SIPP

A £60k SIPP might feel modest, but it could grow into £1m without adding another penny. Here's one strategy that…

Read more »

Content white businesswoman being congratulated by colleagues at her retirement party
Investing Articles

How much do you need in an ISA to match the £12,547 State Pension?

The State Pension pays just £12,547 a year. Here's how big an ISA needs to be to match it, and…

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 should I invest in a SIPP to finish work and live off just dividend income?

I'm hoping to retire comfortably on my Self-Invested Personal Pension (SIPP). But how much do I need to put in…

Read more »

Content white businesswoman being congratulated by colleagues at her retirement party
Investing Articles

Here’s how a stock market crash could actually be great for your retirement planning!

Christopher Ruane explains why, rather than fearing a stock market crash, a long-term investor could use it to try and…

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 you need an ISA for a £31,352 second income?

Investing regularly in a Stocks and Shares ISA can generate a significant second income in retirement. Royston Wild explains how.

Read more »

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

Why bother with a SIPP now rather than wait 10 years?

Interested in a SIPP but putting it off to give yourself time to think? Christopher Ruane explains why that could…

Read more »

happy senior couple using a laptop in their living room to look at their financial budgets
Investing Articles

Plan to fund your retirement with just the State Pension? Good luck with that!

The UK's State Pension is ranked as one of the worst among the world's developed economies. Consider this alternative to…

Read more »

Portrait of a boy with the map of the world painted on his face.
Investing Articles

How to avoid these common mistakes when considering both a SIPP and ISA

A SIPP and an ISA are two very different investment vehicles. Mark Hartley outlines the importance of developing a unique…

Read more »