Smart Web Apps Investment Calculator
Category

Investment Calculator

Estimate future value using compound growth and recurring contributions. Outputs include a clean breakdown and the formula used.

Enter inputs, then click Calculate.
Compounded monthly (simplified).
Simplified: reduces the annual return rate (net rate = return − fee).
Results
Future value
—
Total contributions
—
Estimated interest/growth
—
Formula

Tool description

This calculator estimates an investment’s future value using compound growth with monthly contributions. It’s a planning tool (not a guarantee of returns) and uses simplified assumptions.

How to use

  1. Enter your initial investment and monthly contribution.
  2. Enter an expected annual return rate and optional annual fee.
  3. Set the number of years and calculate.
  4. Copy results to compare scenarios in a spreadsheet.

Why it’s useful

  • Understand how time and contributions drive long-term growth.
  • Compare different contribution levels and rates.
  • See the impact of ongoing fees (simplified).

Use cases & interpretation

  • Retirement planning: model long horizons with steady monthly contributions.
  • Goal saving: estimate what monthly amount could reach a target value.
  • Fee sensitivity: compare the effect of different annual fees over decades.

FAQs

No. This is a planning estimate. Real-world returns vary and can be negative in some years.

This version subtracts the fee percentage from the annual return rate (net rate). Real fees can be more complex.
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