Here’s some useful financial stuff
Ever wonder how long it takes for your money to grow, say to double in value. Or at what rate of interest should you try and get to get your money to double. Well read on and see how easy it is to get a good approximate idea of what you need.
The Rule of 72
You just inherited a bunch of money or you won a pile of money at the casino and you want to invest it to pay for your child’s education. But looking at the costs of college today, and nine years from now, when your nine year old will be eighteen and going off to college is pretty scary.
You have $25,000 to invest and you know that that will not be enough so you need to at least double that in the next nine years. This will give you the majority of money your child will need for their education. This will be a state college rather than a private college so hopefully if you can double your money to $50,000 and your child works part time it should be enough to cover the four years of college at a state university.
Using the Rule of 72 you know you have 9 years before you need to double the money and get to the $50,000 amount you feel you’ll need. If you divide 72 by the 9 years you get an answer of 8. This 8 represents the amount of interest you will need to get on the original $25,000 investment to turn it into the $50,000 you need.
That means that you should put the $25,000 into an investment that will pay 8% interest over the next 9 years. You will then reinvest all of the interest the investment has paid you. You will then have your $50,000 thanks to the magic of compound interest (interest paying interest on interest). The Rule of 72 is not an exact formula. It is only to be used to “estimate” the interest rate needed or the number of years. Please keep that in mind. Work with a financial professional to get more exact information.
The Rule of 114
So you say that you need to triple your money in order to have enough to meet your financial goals. The Rule of 114 works similar to the Rule of 72. You divide the number of years in which you need the money by 114 and it gives you the interest rate you will need to triple your money. I have $50,000 and I need $150,000 in 10 years to have a significant down payment on a larger, newer home. I would divide 114 by 10 years and I would have to get an interest rate of 11.4 percent to triple my money. Once again, these figures are only close estimates of want is really needed.
The Rule of 144
I need to quadruple my money. How do I calculate how long I need to quadruple my money? You would use the same methods as the two previous formulas but using the number 144. So you would divide the interest rate of 5%, a conservative interest rate, into the number 144 and you would need to wait approximately 29 years for your money to quadruple or increase by 4 times.
Again these formulas are only to be used to “estimate” the interest rate or the number of years your money will double, triple, or quadruple. This is important for you to know so you can understand what type and how aggressive your investments need to be to reach your goals.
An 8% or 11.4% interest rate today, 2009, would be hard to achieve without taking on some fairly aggressive investments. This is good information to know beforehand so you can be realistic about your financial goals.
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