Inflation is the silent destroyer of wealth. If your savings account pays 3.5% and inflation is 3%, you're gaining in nominal terms but losing in real terms. Here's how to think about inflation — and what to do about it.
What inflation actually does to your money
At 2.5% annual inflation (the UK 20-year average), £10,000 today will have the purchasing power of:
| Years from now | Real value of £10,000 | Lost to inflation |
|---|---|---|
| 5 years | £8,811 | £1,189 |
| 10 years | £7,763 | £2,237 |
| 20 years | £6,027 | £3,973 |
| 30 years | £4,677 | £5,323 |
Use our inflation calculator to see exactly how much your savings lose over time at different inflation rates.
Cash savings: what beats inflation in 2026?
With the Bank of England base rate at current levels, some savings accounts do beat inflation. Priority order for cash:
- Cash ISA — best rates, tax-free, protects against income tax on interest
- Easy access savings — keep emergency fund here (3–6 months expenses)
- Regular saver accounts — some offer 6–8% on small monthly deposits
- Fixed-rate bonds — lock in a rate for 1–5 years if you won't need the money
Beyond cash: investing to beat inflation long-term
Cash savings struggle to beat inflation over long periods after tax. The UK stock market (FTSE All-Share) has historically returned around 7–8% annually — well above inflation. Inside a Stocks & Shares ISA, those returns are completely tax-free.
The rule of thumb: money you won't need for 5+ years should be invested, not saved in cash. Money needed within 5 years should be in cash (or high-quality bonds) to avoid market timing risk.
The real cost of inflation for retirement savings
If you need £30,000/year to retire today, in 25 years (at 2.5% inflation) you'll need £55,900/year for the same lifestyle. This is why retirement planning must account for inflation — and why FIRE calculators that ignore it dramatically understate the pot you need.
FinSavvy's UK FIRE calculator builds inflation into all projections, showing real (inflation-adjusted) figures rather than nominal ones.