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formula for compound interest uk. Initial investment 1 annual interest ratecompounding periods per year years compounding periods per year. The formula for calculating compound interest is P C 1 rn nt where C is the initial deposit r is the interest rate n is how frequently interest is paid t is how many years the money is invested and P is the final value of your savings.
Compound interest Here the interest is added to the principal at the end of each year. This is a much quicker method. Compound interest is different to simple interest in that you the saver will earn interest on interest.
Compound interest Here the interest is added to the principal at the end of each year.
The formula used in the compound interest calculator is A P 1rnnt A the future value of the investment P the principal investment amount r the interest rate decimal. The formula now becomes. Compound interest Here the interest is added to the principal at the end of each year. It is the result of reinvesting interest rather than paying it out so that interest in the next period is then earned on the principal sum plus previously accumulated interest.