Savers who have Cash ISAs are being urged to take action and move their money to a better-paying account which actually beats inflation, after the latest figures were released today. On Wednesday, the Office for National Statistics announced the latest set of Consumer Price Index (CPI) inflation figures, pegging inflation at 3.4% for December.

It means, effectively, that the value of money has dropped by 3.4% on average, thanks to rising prices. Inflation has increased month on month too, up from 3.2% in November, so the reduction in the value of your money is speeding up.

Those with savings are impacted too, because unless your Cash ISA savings account is generating higher interest than inflation, you are losing money. For example, if inflation is 3.4% but you’re only getting 3% interest, you are losing 0.4% of your money’s spending power, as your interest isn’t keeping up with inflation.

And according to Finder, the average easy access variable Cash ISA account in the UK right now is giving savers a rate of just 1.87%, which is well below the inflation rate of 3.4%.

Finder says: “ The UK’s average instant access savings rate was 2.20% as of November 2025. This is down from a 13-year high of 2.82% in January 2024.

“Meanwhile, the average variable cash ISA interest rate was 1.87% as of November 2025. This is down from a peak of 3.37% in October 2023 but up from 1.69% in June 2025.”

With easy access Cash ISAs offering a lower-than-inflation return right now, turning to fixes is the best way to keep ahead of inflation.

The average one-year fixed Cash ISA is currently at 4.02%, which is higher than inflation. 

Finder adds: “Savers can generally find higher rates in fixed-rate ISAs, where you lock your money away for a set period. The average savings interest rate for a 1-year fixed rate ISA was 4.02% in November 2025, down from 5.48% in October 2023.

But with a rate of 4% in a fix, you’d still be getting more money than inflation. And some Cash ISAs on the market right now will do even better than that.

Right now, Trading212 has an easy access Cash ISA which will give a boosted 4.33% variable – well above inflation – but with a 0.74% bonus for new customers.

Plum will give new customers 4.32%, with 2.54% underlying and a one year 1.78% bonus.

For fixed term, Shawbrook Bank will currently give 4.14% fixed for 12 months, while Coventry Building Society gives 4.13%. Tandem Bank gives 4.12% while Co-op offers 4.03%.

All of these are higher than the current 3.4% inflation rate, meaning you’re growing your money rather than losing it.