Understand the difference between nominal interest and real purchasing power after inflation.
Nominal vs Real Rates Your bank account shows a balance, but that number is misleading. If you earn 3% interest but inflation is 5%, your 'Real Rate of Return' is negative 2%. Your money is literally losing value while sitting in the bank. ## The Formula To calculate your real rate, subtract the inflation rate from your interest rate. If your savings earn 2% and inflation is 4%, you are losing 2% of your purchasing power every single year. ## A Practical Approach Check the official consumer price index for your country. Compare this number to your bank account's interest rate. If you are consistently below inflation, it is time to move excess cash from low-interest savings into higher-yielding assets. This simple calculation prevents you from feeling 'wealthy' while your ability to buy goods and services slowly declines over time.