Part 3 of 3
The Power of Compounding Interest and Rule of 72
Interest is one of the secrets in making money grow. Compound interest is a concept wherein both the capital and interest grows making its growth rate faster compared to simple interest (wherein only the capital grows). Compound interest can work for your favor or against you. If it's applied on savings and investments, it's working on your favor but if its applied on debt, it's working against you.
The rule of 72 suggests how long will your money double in reference to the interest rate. The higher rate, the faster doubling of your money. The interest will simply be divided to 72 and that's the number of years for your money to double.
At 4%, 72 divided by 4 is 18 so that means your money will double every 18 years.
At 8%, 72 divided by 8 is 9 so your money will double every 9 years.
At 12%, 72 divided by 12 is 6 so your money doubles every 6 years.
If given the chance, people will invest at either 8%, 12%, or even any interest higher than that but because people are so cautious or simply lack the knowledge on where to find these interest rates, they settle for 4% or even lesser than that hampering the growth of their money.
Banks are into lending or they simply reinvest the depositors money so what normally happens is that the money that is being deposited at 4% is simply being lent at 12% or reinvested at a higher yielding interest rate. After 36 years, the depositors money is returned. The bank made the P100T grow to P6.4M after 36 years and gave the depositor only P400T (because that is the interest rate that they have agreed). Unfortunately, most people are contented with small interest rates because that's what they only know or they became too cautious.
Normally, banks only give 1% for savings accounts. A bulk of many people's money are in savings accounts. That means, it will take 72 years for their money to double its value.
Put your emergency fund in the bank for easy access.
Put your investments into something that yields higher interest rates such as mutual funds, stocks, bonds, balanced funds, UITFs, etc. for better growth.