Rule Of 72
An Overseas Filipino Worker (OFW) started to work abroad. Having worked for several years there at the age of 29 had a total savings of P 100,000.00 (Philippine peso)
In order to preserve his P 100,000.00, he decided to place it in the bank, since this is the only vehicle of investment that he knew about. The bank manager was delighted that the OFW opened an account with them. He even recommended that the money be placed in a time deposit account enabling the OFW to earn more than the ordinary savings account.
So the money remained in the time deposit account until the OFW reached the age of 65. At that time, he then went back to the bank to withdraw the P 100,000.00. He was amazed when he learned that the P100,000.00 had already grown to P 400,000.00. He was quite happy with the growth of his money. He then withdrew the money from the bank, enjoyed life and lived happily ever after.
So tell me, is this a “live happily ever after” story or not? Do you think this OFW has “wisely” handled his money? Did he really maximize his money’s potential or did he just made others more richer ?
The rule of 72 gives us the answers to the above questions. This rule determines how many years it will take your money to double. The rule is expressed in this very simple equation: 72 / interest = No. of years it takes for your money to double
For this certain OFW, his money will double every 18 years. This is simply solved by applying the rule of 72 which is computed as follows: 72 divided 4 % per annum = 18 years. This means that if you add 18 years from the time he deposited his money, the P 100,000.00 will double to P 200,000.00 when he reaches the age of 47. After 18 more years when he reaches the age of 65, his money will already become P 400,000.00.
Now that the P 100,000.00 is in the bank’s hand, what do they do with it ? Well they basically invest it in other vehicles of investments which gives them a higher interest rate such as mutual funds, the stock market, the money market, government bonds, corporate bonds etc. They even use it to loan it back to the depositors at a much more higher interest rate. But let’s just say that all of the bank’s investing activities gave a return of 12 % per annum. Using the rule of 72, it can be determined that the same amount of money will double every 6 years. (computed as follows: 72 divided by 12 % interest = 6 years)
So when the OFW went back to the bank after 36 years and claimed his P 100,000.00 the bank manager gladly gave him back his P 100,000.00 plus the interest of P 300,000 amounting to P 400,000.00. After all they already made P 6 million pesos out of the OFW’s P 100,000.00. Now isn’t that hi-way robbery?
You want to be wealthy and a better steward of your money? Think like the bank!!! Use the Rule of 72 wisely ! Make it work for you !
Do you want to know more about investment strategies ? Visit the blog of Zigfred Diaz where he writes about several interesting topics such as investments, money management, business, making money online and Stock market investing

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