What is inflation?
What you'll learn
Understand what inflation is and why idle cash quietly loses buying power.
Inflation is the steady rise in prices over time, which means each pound buys a little less than it did before. Your cash can sit untouched and still quietly lose value, because the world around it gets more expensive.
Why cash loses out
Money in a low-paying account does not vanish, but its buying power erodes. If prices rise faster than the interest you earn, you are slowly going backwards in real terms even as the balance looks the same or higher.
- Nominal value - the number on your statement.
- Real value - what that number can actually buy.
Inflation widens the gap between the two.
The same £1,000, different worlds
| If prices rise about... | After 10 years, £1,000 buys roughly... |
|---|---|
| 2% a year | £820 of today's goods |
| 3% a year | £744 of today's goods |
| 5% a year | £614 of today's goods |
These are illustrative figures to show the shape, not a forecast.
What this means for you
- Keep only your short-term and emergency money in cash.
- For longer-term money, the aim is to grow it at or above inflation, which is a core reason people invest.
- A high headline interest rate still loses if inflation is higher.
Key takeaways
- Inflation is rising prices, so cash buys less over time.
- The balance can grow while its real buying power shrinks.
- Cash suits short-term money; long-term money needs a chance to outpace inflation.
- Compare your interest rate against inflation, not just against zero.
Illustrative only: the real buying power of £1,000 left as cash if prices rise a steady 3% a year. Actual inflation varies year to year. Not a forecast.
Frequently asked questions
What actually causes inflation?
{ "Inflation has many causes - rising costs, strong demand, or more money chasing the same goods": { " For savers, the cause matters less than the effect": "each pound buys a little less." } }
Is some inflation normal?
Yes. Most economies aim for low, steady inflation rather than zero. The problem for savers is when their money grows slower than prices.
How do you protect money from inflation?
Holding only what you need in cash, and putting longer-term money where it has a chance to grow at or above inflation, helps. This is a key reason people invest rather than hoard cash.
General information, not financial advice. The value of investments can fall as well as rise, and figures and rules can change; check the current position before acting.