Unlock the potential of your savings with our free Quarterly Compound Interest Calculator. Easily determine your investment's future value by factoring in initial principal, annual interest rate, investment time, and optional regular quarterly contributions. Discover how quarterly compounding can significantly accelerate your wealth growth!
Formula:
The core formula for compound interest is:
A = P (1 + r/n)nt
When factoring in additional regular contributions, the future value (FV) is calculated as:
FV = P(1 + r/n)nt + PMT * [((1 + r/n)nt - 1) / (r/n)]
Where:
- FV = Future Value of the investment
- P = Principal investment amount (initial lump sum)
- PMT = Additional Quarterly Payment (contribution)
- r = Annual nominal interest rate (as a decimal)
- n = Number of times interest is compounded per year (4 for quarterly)
- t = Number of years the money is invested