Finance

Inflation: Why Your Money Is Worth Less Every Year (And What to Do About It)

Remember when a Freddo cost 10p? Now it's about 30p. That's inflation in action.

Inflation is one of those things everyone vaguely understands but few people think about properly. And that's a problem, because it's quietly eating your savings, affecting your salary negotiations, and changing what your money can actually buy.

What Inflation Actually Is

Inflation is the rate at which prices increase over time. If inflation is 3%, something that cost £100 last year costs £103 this year. The UK government targets 2% inflation. Not zero – a little inflation is considered healthy for the economy. But when it spikes to 5%, 10%, or higher, things get painful.

Why does the government want any inflation at all?

  • It encourages spending. If prices are going up, there's an incentive to buy now rather than wait.
  • It makes debt easier to manage. If you borrowed £100,000 and inflation is 3%, that debt effectively shrinks in real terms each year.
  • It gives central banks room to manoeuvre. If inflation is at 2% and the economy needs stimulating, the Bank of England can cut interest rates.
  • Deflation is worse. When prices fall, people delay purchases, businesses struggle, and the economy can spiral downward.

CPI: The Number Everyone Quotes

CPI stands for Consumer Price Index. It's how the government measures inflation. Every month, the Office for National Statistics checks the prices of about 700 different items – everything from bread and petrol to streaming subscriptions and gym memberships. They weight these by how much typical households spend on each category, crunch the numbers, and out pops the CPI.

When the news says "inflation is 4%," they usually mean CPI increased by 4% compared to the same month last year.

CPI vs RPI vs CPIH

Because one measure wasn't confusing enough, we have several. CPI is the main measure, used for the Bank of England's target, benefit increases, and the state pension triple lock. CPIH is CPI plus housing costs – the ONS prefers this one now. RPI is the old measure, which includes mortgage interest and council tax. It usually runs about 1% higher than CPI and is still used for student loan interest, rail fare increases, and some index-linked bonds.

Why does this matter? Because different things are linked to different measures. Your student loan interest uses RPI (higher). Your benefits use CPI (lower). The choice of measure isn't neutral.

What Inflation Does to Your Money

Here's the uncomfortable truth: money sitting in a bank account is losing value. If inflation is 4% and your savings account pays 2%, you're losing 2% of purchasing power every year. Your balance goes up, but what it can buy goes down.

Inflation and Your Salary

If you get a 2% pay rise and inflation is 4%, you've taken a pay cut. Your number went up, but your purchasing power went down. This is why "real terms" matters. A salary that stays flat in nominal terms is falling in real terms if there's any inflation at all.

When negotiating salary:

  • Know the current inflation rate
  • A raise below inflation is a cut
  • Frame your ask in terms of maintaining purchasing power, not just getting more money

Who Wins and Loses from Inflation

Winners:

  • People with fixed-rate debt (mortgages become easier to pay as wages rise)
  • Property owners (assets tend to rise with inflation)
  • Anyone who borrowed money at low rates before inflation spiked

Losers:

  • Savers with low-interest accounts
  • People on fixed incomes (pensions that don't adjust)
  • Anyone whose wages don't keep up
  • Renters (rents tend to rise with inflation)

Protecting Yourself

  • Don't hold too much cash. Emergency fund, yes. But beyond that, cash is losing value.
  • Invest for the long term. Stocks, property, and other assets tend to outpace inflation over time.
  • Consider index-linked products. Some savings bonds and investments are linked to inflation.
  • Negotiate your salary. Don't accept below-inflation raises without a fight.
  • Lock in rates when they're good. Fixed-rate mortgages protect you if rates rise.

The Practical Takeaway

You can't control inflation. But you can:

  1. Understand it. Know what the current rate is and how it affects you.
  2. Factor it into decisions. Salary negotiations, savings strategies, big purchases.
  3. Don't let cash sit idle. Beyond your emergency fund, put money to work.
  4. Think in real terms. A 3% raise sounds good until you realise inflation is 4%.

Inflation is always there, quietly eroding purchasing power. The people who do well are the ones who account for it, not the ones who ignore it.

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