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Investment Compounding Calculator

See how regular investments and compound interest build wealth over time. Factor in monthly contributions to see realistic growth scenarios.

Calculator Inputs
$

$0 - $100,000

$

$0 - $5,000

0% - 20% per year

1 - 50 years

Total Contributed

$0

Investment Earnings

$0

Final Balance

$0

ROI: 0%

Growth Breakdown Over Time

How This Calculator Works

  • 1.Your initial investment grows at the specified annual return rate
  • 2.Monthly contributions are added to your balance
  • 3.Compound interest is calculated monthly for realistic results
  • 4.The chart breaks down contributions vs. earnings gained over time

Key Insights

Start Early: The more time your money has to compound, the more dramatic the results.

Consistent Contributions: Regular monthly deposits create a powerful snowball effect combined with compounding.

Return Assumptions: Historical stock market returns average 7-10% annually, but past performance doesn't guarantee future results.

Explore Other Calculators

Compare different financial scenarios or explore how compounding affects other areas of your life.

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