Mortgage interest and a whole bunch of other
Simple Savings & compound interest calculator http://www.interest.com/hugh/calc/savings.cgi
Method Three - probably the easiest
How to figure compound interest with your computer's built in scientific calculator.
This method comes from John Camfield, one of our netizens; I've just added some more explanation to it. Hat's off to John - save this one.
1. Go to "start menu" to "programs" to "accessories" to "calculator"
2. Pull "view" menu down to "scientific" and you will see another section of the calculator open up on the left with more technical things on it.
3. Click on "C" on the right to clear the calculator
4. Here's the tricky part - on the right side enter "1. whatever the MONTHLY interest rate is" - If it's 20%/month enter 1.2; 10%/month enter 1.1; 4.5%/month enter 1.045; 8%/mo enter 1.08
5. Now between the "sin" and "log" on the left is an x and a y with a little roof over it. x^y; click on that
6. On the right side enter the number of months you are calculating for; 12, 24, 36, 60 etc.
7. Back to the left side click on the x^y box again
8. To the right side click on the times sign on the right , an "x" which lies above the minus sign but below the backslash
9. Now enter the amount of initial deposit that interest is accruing on.
10. Enter the times sign ("x") again and the answer should appear at the top.
Example: Let's assume you benefactored someone into the CashflowclubOnline program and wanted to know what the $2500 added to your compulsory enhancement fund at month 25 was worth out at month 97 at 4.5% compound interest per month.
Clear the calculator and enter 1.045 on the right, click on the x^y symbols on the the left, enter 73 (97-24 = 73) on the right, click on the x^y box on the left; enter the "x" sign on the right, enter $2500 on the right, click on the "x" sign again and the answer at the top should be $62,148 out at month 97. Not a bad return for a $300 investment to get the $2500 at month 25.
A Math Whiz has posted a web site where you can get compound interest calculated easily without a calculator. This individual understands the principles of compound daily interest and saturation.
Here is the web site:
In the first box, use "future worth"
In the second box, use "present worth"
In the third box, put the initial investment
In the fourth box, put the period (like 30 days for daily compounding,
or 12 months if you are calculating monthly compounding)
On the bottom, click on "each period"
Example- $100 at 10% per day for 30 days yields a
return of $1744.94. If you continue to reinvest all the time (like
going for saturation), I don't think there is a formula that can
easily project the return except at full saturation when you reinvest the
maximum allowable amount, and whatever is extra you can withdraw for
yourself. Keep in mind that, unless the program is 100% investment
based, anything less spells ultra high risk, and therefore continuous
reinvesting isn't worth 2 cents. If the program is 100% investment
based, then going for saturation does have value.