Why invest at all?
Inflation erodes cash. At 3% inflation, £10,000 today is worth roughly £7,400 in real terms in 10 years if it just sits in a savings account. Investing gives your money the chance to grow faster than inflation over the long term — though it comes with risk.
Important: investing is for money you won't need for at least 5 years. Your emergency fund stays in cash.
Stocks (shares)
A stock is a small ownership stake in a company. If the company does well, the share price rises and you profit. If it does badly, you lose money. Individual stocks are high risk — a single company can go bust. Concentrating your money in one or two stocks is closer to gambling than investing.
Funds
A fund pools money from thousands of investors to buy a collection of assets. Instead of buying one company, you own a slice of many. Diversification reduces risk — if one company collapses, it's a much smaller blow.
Funds are managed by a fund manager who decides what to buy and sell. This active management comes at a cost — annual fees typically range from 0.5% to 1.5% per year, which compounds significantly over time.
ETFs (Exchange-Traded Funds)
An ETF is similar to a fund but trades on a stock exchange like an individual share. Most ETFs are index trackers — they automatically follow an index like the FTSE 100 or S&P 500, buying every company in proportion to its size.
Because they're automated rather than actively managed, fees are much lower — often 0.07–0.20% per year. Decades of evidence shows most actively managed funds underperform their benchmark index after fees. This is why index-tracking ETFs are the default recommendation for most beginners.
"A global index tracker ETF gives you exposure to thousands of companies across dozens of countries — in a single purchase."
Where to hold your investments
Always consider a Stocks & Shares ISA first. Any growth and income is completely tax-free. You can invest up to £20,000 per tax year. Outside an ISA, you'll pay Capital Gains Tax on profits above £3,000 (2025/26) and income tax on dividends above £500.
- Open a Stocks & Shares ISA with a low-cost platform (Vanguard, Fidelity, iShares)
- Choose a low-cost global index tracker ETF
- Set up a monthly direct debit and automate it
- Don't check it every day — time is your friend
The most important thing
Starting matters more than starting perfectly. A beginner who invests £200/month from age 25 will almost certainly do better than someone who waits until 35 to find the "perfect" investment. Time in the market beats timing the market.