Investment Calculator

Forecast compound interest returns, portfolio growth, and monthly recurring investment power over time.

Initial Principal ($)

Monthly Contribution ($)

Time Horizon (Years): 20

Estimated Annual Return (%): 8%

Projected Value in 20 Years

$343,778

Total Interest Earned: $213,778

Breakdown & Metrics

Initial Starting Capital$10,000

Total Out-of-Pocket Deposits$130,000

Compound Growth & Interest$213,778

Monthly Contribution$500/mo

Expected Annual Growth8%

How It Works & Tips

✓The S&P 500 has historically returned approximately 9-10% annually before inflation over 30-year spans.
✓Starting early gives compounding exponential leverage on your terminal wealth.