2 - Nominal and Real interest rates
Quantity of goods and services unit of money can purchase is defined as purchasing power of money. With 100$ people could purchase more items 20 years back than they can do now.(Ref inflation calculator ) Inflation is defined as general rise of prices of goods and services over a period of time.In normal times, inflation occurs year after year and money loses its purchasing power. If you keep 100 $ in your shelf for 10 years, at 10% yearly inflation (Still some emerging economies have high inflation.Analysis will be simple to understand at 10%) it is worth only 35$ (100*(.9^10)).Inflation and purchasing power loss due to inflation is said to be biggest risk by investors. Say bank is providing 10% interest on deposit and the actual yearly inflationary expectation is 7%. What is the real returns we get? This 10% interest is called Nominal interest, as its not adjusted for inflation.If you need to adjust for inflation you will get real interest rate. Ni ...