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how do i calculate compound interest rate. Following is the formula for calculating compound interest when time period is specified in years and interest rate in per annum. A the future value of the investmentloan including interest P the principal investment amount the initial deposit or loan amount r the annual interest rate decimal n the number of times that interest is compounded per unit t t the time the money is invested or borrowed for.
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N number of. How to calculate compound interest A the future value of the investment P the principal investment amount r the interest rate decimal n the number of times that interest is compounded per period t the number of periods the money is invested for. In the formula A represents the final amount in the account after t years compounded n times at interest rate r with starting amount p.
How to calculate simple interest You figure simple interest on the principal which is the amount of money borrowed or on deposit using a basic formula.
The compound interest formula solves for the future value of the investment. To calculate compound interest use the formula below. A n is the amount after n years future value. You need the beginning value interest rate and number of periods in years.
