Inflation is when the overall price of goods and services rises, meaning that you can buy less for your money today than you could yesterday. This is also true of the money in your savings account; if there is inflation, you’ll be able to buy less with the money you’ve saved than when you first deposited it. This is the case if the savings interest rate is lower than inflation, for example, or if you don’t receive interest or have to pay interest on your savings. If inflation is higher than the savings interest rate, the value of your savings will go down. This also applies to your purchasing power.
However, the opposite is also true. In a favourable climate, you’ll receive interest on your savings. If the savings interest rate is higher than inflation, your savings will be worth more. This is because the interest you receive more than compensates for the drop in the value of your savings. Your purchasing power will also increase.