Investing vs saving in a bank: which is right for your money?

Saving means setting aside cash for when you need it, while investing means using your money to buy investments you expect to grow in value over the longer term¹. A bank or building society account keeps the cash amount steady and, for eligible deposits, is protected if the firm fails. Investing puts that money into shares, funds or bonds, where the value can fall as well as rise and you may get back less than you put in².

The practical difference comes down to time and risk. Savings in a bank are very secure but often lose value over time due to inflation, because the interest you receive may be lower than the rate at which prices rise³. Investing is riskier because the value is not guaranteed and can go down as well as up, but it offers the chance of greater returns over the long term, which is not guaranteed either⁴.

Most guidance points the same way: build a cash buffer first, then consider investing money you will not need for at least five years. Before you invest, make sure you have some rainy day money in a bank or building society you can access quickly for unexpected outgoings or emergencies⁵. How much that should be is a personal decision based on what works for you⁶.

Saving and investing: what each one does with your money

A savings account is somewhere to put away money for the future, for emergencies or to buy expensive things⁹. The money stays as cash. It does not change in value, and the provider pays interest on it. Credit union savings accounts work in a similar way and either pay interest or a share of any profits¹⁰. You can open a savings account with your bank, or consider one with a credit union¹¹.

Investing is different in kind, not just in degree. When you invest, you buy an asset, such as shares in a company, a fund that holds many shares, or a bond, which is a loan to a government or company¹². The money is no longer sitting as cash. Its value moves with the market. A stocks and shares ISA is one wrapper for this: the money you put in is invested on the stock markets¹³.

That difference shapes everything else. A saver knows the balance. An investor owns something whose price is set by buyers and sellers, and whose income, if any, depends on how the underlying companies or borrowers perform. Investment trusts, for example, are more risky than bank savings accounts but offer the chance of a growing income and potentially capital growth too¹⁴.

Both can sit inside tax wrappers, and both count as savings in some contexts. For means-tested benefits, investments should normally be included as savings¹⁵. If you are investing for someone else as their attorney or deputy, different rules apply again¹⁶.

Saving keeps your money safe; investing accepts risk

Your money is generally secure in a bank or building society, whereas there are risks involved with investing¹. That is the plainest way to put the trade-off. The cash amount in a savings account does not fall. The price of an investment does.

The risk in investing is not a small print matter. Investing in the stock market is risky, and when you invest you could lose money². In extreme circumstances you could even lose all your money³. The value of investments can fall as well as rise, and there is a chance you may get back less than you put in¹⁷.

Risk also varies between investments. Investing in bonds is generally considered safer than shares¹². Cash funds are considered better at helping to protect the value of your investments in the short term compared to other types of investments¹⁸. A capital protected structured investment carries risk similar to investing in the stock market and greater than an ordinary savings account, even though the name suggests otherwise¹⁹. Smoothed funds, which aim to even out market movements, still carry more risk than saving in a typical savings account²⁰.

The risk on the savings side is quieter but real. If the interest you receive from your bank account is lower than inflation, that means you are losing money, because you cannot buy as much with your savings⁴. Savings in a bank often lose value over time due to inflation, however secure they are³.

Returns over time: why stocks have usually beaten cash

Historically, money invested in stocks has fared better than money in cash savings accounts, with most cash accounts not even beating inflation²¹. Over longer periods of time, five years or more, investments such as stocks, shares and funds have the potential to give you higher returns compared to cash savings²². Over a period of five years or more, investments usually give you a higher return compared to cash savings²³.

Shares have historically provided greater returns than cash if you invest for a longer term of five years or more, although this is not guaranteed²⁴. The word "historically" is doing a lot of work in that sentence, and it is worth being precise about what it does not promise.

The record is not a straight line, and the period you choose changes the answer. Evidence given to a parliamentary committee noted that over the long term, say a 20 year period, the chances of cash outperforming equities is around 99%²⁵. That figure is a reminder that "stocks beat cash" is a statement about averages over long stretches, not a rule that holds in every decade. There are long periods when cash wins.

Two things drive the difference. First, shares carry risk, and investors expect to be paid for accepting it. Second, cash returns depend on interest rates, which can sit below inflation for years. The comparison is not between a safe option and a risky one that always wins; it is between a certain but often eroding return and an uncertain one with more room to grow.

Short term or long term: matching the choice to your goal

The single most useful question is when you need the money. Savings are often used for short-term needs, up to five years¹. Consider investing for medium to long-term goals, at least five to ten years¹. The two horizons barely overlap, which is why the choice is usually decided by the calendar rather than by preference.

Consider saving if you do not want to take any risks with your money, have a short-term goal in mind, or want to build up a nest egg for an emergency¹. Consider investing if you want the chance of a return higher than you would get by putting your money into an easily accessible savings account, are willing to accept an element of risk, and want to invest for the medium to long term, at least five to ten years¹.

Be prepared to keep your money invested for five to ten years, or longer, and try to ignore the inevitable ups and downs².

The reason the horizon matters is what happens if markets fall. An investor who needs the money next year may have to sell at a low point. An investor with ten years can wait. That is why the same investment can be sensible for one goal and unsuitable for another.

Emergency savings come before investing

Before you invest, make sure you have some rainy day money, kept as cash in a bank or building society so you can access it quickly for any unexpected outgoings or emergencies⁵. The same advice appears across guidance: keep an appropriate amount of cash in a bank or building society so you can access it quickly for unexpected outgoings or emergencies². Ensure you have safety net savings before starting to invest¹⁷.

The amount is not a fixed number. The amount in an emergency fund will be different for everyone, and it is a personal decision based on what works for you⁶. What matters is that the money is reachable and not exposed to market falls.

There is a second reason to sort out cash first. Investment is not suitable as a way to get out of debt⁵. If you are carrying expensive debt, investing alongside it means taking market risk while paying interest, and the two rarely work in your favour. If you have money left over after meeting your essential living costs, it might be a good idea to pay a regular amount into a savings account²⁶.

Protection: what happens to your money if a firm fails

The two sides of this page are protected in different ways, and the difference matters when something goes wrong.

On the savings side, the Financial Services Compensation Scheme protects eligible deposits if a firm fails, up to a limit set by the PRA, and protection is provided per depositor, per firm⁷. The PRA is responsible for deposits and insurance rules, while the FCA is responsible for rules relating to other activities such as pension advice and investments²⁷. The scheme does not cover everything: it cannot protect you if an e-money firm or payment services firm fails²⁸.

On the investing side, the picture is narrower. Investment must be regulated by the FCA to be eligible for FSCS protection²⁹. The scheme covers bad or misleading investment or pension advice, negligent management of investments, misrepresentation, or fraud³⁰. It protects against the costs of a company going bust, and will not cover you for poorly performing investments⁸. If you invest in a firm which is not authorised by the FCA, you risk losing your money, without any protection³¹.

That last point is the one to hold on to. Most traditional investment firms dealing in stocks and shares must be registered with and authorised by the FCA³². Dealing in investments is a regulated activity in the UK, so trading platforms require authorisation from the FCA²⁵. But some things sold as investments sit outside that: cryptocurrency, whiskey casks, property development and art are not regulated by the FCA³². Unregulated investments are not covered by the rules of the Financial Conduct Authority³³.

Before investing, it is reasonable to ask whether the product is covered by FSCS, how much of your money is protected, and what would happen to your money if the provider's business fails³⁴. You can check whether a firm is authorised on the FCA Register³⁵.

Getting started with investing alongside your savings

The order that most guidance describes is straightforward: cash buffer first, then investing with money you will not need for years.

1. Build the emergency fund. Keep an appropriate amount of cash in a bank or building society you can access quickly².
2. Deal with expensive debt before investing. Investment is not suitable as a way to get out of debt⁵.
3. Decide your horizon. Savings suit goals up to five years; investing suits at least five to ten years¹.
4. Check the firm. Most investment firms dealing in stocks and shares must be authorised by the FCA, and you can check on the FCA Register³².
5. Ask what is protected. Whether the product is covered by FSCS, how much is protected, and what happens if the provider fails³⁴.
6. Keep savings separate from spending money. Open a savings account so you keep savings separate from your spending money¹¹.

If you are investing for someone else as their attorney or deputy, there is separate official guidance on what you may and may not do¹⁶. If you have a concern about a workplace pension, The Pensions Regulator explains who to contact³⁶.

Where things go wrong, there is free help. The Financial Ombudsman Service handles complaints about investments, including individual savings accounts and ISAs¹³. It also deals with complaints about capital protected structured investments¹⁹. If you are contacted about an investment that sounds too good to be true, the warning signs of an investment scam are worth knowing before you hand over anything³⁷.