Compound Interest Formulas and future value formulas 1. Let Principal = P, Rate = R% per annum, Time = n years. 2. When interest is compound Annually: 3. When interest is compounded Half-yearly: 4. When interest is compounded Quarterly: 5. When interest is compounded Annually but time is in fraction, say years. 6. When Rates are different for different … [Read more...] about Compound Interest Formulas and future value formulas