In modern times, people have started to calculate the value of different financial products more and more accurately. Today, you can find many financial calculators online and they will help you make the right decision on how much money to invest, how much to lend, or how to buy a house.

But, when was the last time you sat down and did the math yourself? Do you really understand how much you are paying in interest? It is time to do a little more calculating.

If you want to calculate the interest you are paying on your savings account, you first need to know how much the interest rate you are paying is.