Investment Calculator

Compound Interest Formula

The future value of your investment is calculated using the compound interest formula with regular contributions:

• FV = Future Value
• P = Principal (starting amount)
• r = Annual interest rate (as decimal)
• n = Number of times interest compounds per year
• t = Number of years
• PMT = Regular contribution amount

Understanding Compound Interest

Compound interest is the interest calculated on both the initial principal and the accumulated interest from previous periods. This creates exponential growth over time, often called "interest on interest."

The power of compound interest increases with more frequent compounding and longer time periods. This is why starting early and being consistent with contributions can have such a dramatic impact on your investment growth.

Contribution Timing

The timing of your contributions affects your returns:

• Beginning of Period: Contributions made at the start of each period earn interest for the full period, resulting in slightly higher returns.
• End of Period: Contributions made at the end of each period start earning interest in the next period, resulting in slightly lower returns.

Investment Tips

• Start Early: Time is your most valuable asset. The earlier you start investing, the more time compound interest has to work its magic.
• Be Consistent: Regular contributions, even small ones, add up significantly over time.
• Reinvest Returns: Reinvesting dividends and interest accelerates compound growth.
• Consider Inflation: Aim for returns that outpace inflation to grow your purchasing power.
• Diversify: Don't put all your eggs in one basket. Spread investments across different asset classes.
• Long-Term Focus: Investments typically perform better over longer time horizons.