I am looking for a formula to calculate compound interest in Excel

[Corey Dunnett]

I would appreciate some help in locating a formula to calculate compound interest on an increasing principal. Can anyone please help.

[JyotiT]

If you add to the principal at a constant rate, and the interest rate doesn't change, then simple use the FV function. Otherwise, you need to use a step wise method, using a table of variable input to FV at every change in rate or principal addition. Or else follow the suggestions given in the below thread.
How to Calculate Compound Interest

[-Deven-]

Hope this sample can help you out. The formula is * = End value of initial capital (1 + p) ^ n where p = interest rate (eg 0.05 for 5%) & n = term in years. There is also an Excel function: =-FV (p, n, 0, initial capital). However, this throws a negative result out from there - that's why the sign is used.

[JustineBB]

For this function ZW is recommended. It returns the future value of an investment at a constant rate and constant payments if necessary. A more detailed description of the function can be seen on the Office Excel Help website. For example, the formula = FV (3% / 12; xx, 0, -1000, 1) if interest is paid monthly at 3%, or = ZW (3% yy, 0, -1000, 1) at annual compounding. Xx or yy is for the period to be entered: the number of months for xx, yy the number of years that you are interested. 1000 is the investment that you have started.