Hi Greg!
=Amount*(1+RatePerMonth)^(NoOfMonths)-Amount
But if you don't have exact months you need to determine the daily
effective equivalent of the monthly rate:
RatePerDay=(1+RatePerMonth)^(12/365)-1
Then use:
=Amount*(1+RatePerDay)^(EndDate-StartDate)-Amount
Or combining the formulas:
=Amount*(1+((1+RatePerMonth)^(12/365)-1))^(EndDate-StartDate)-Amount