Investment Growth Calculator - Compound Interest & Portfolio Growth 2025

Calculate investment growth with compound interest, regular contributions, and different return scenarios. Model your portfolio's potential growth and optimize your investment strategy for long-term wealth building.

Investment Growth & Compound Interest Calculator

Model investment growth scenarios with different contribution patterns and return rates

Initial Investment

Starting amount to invest
How long you plan to invest

Regular Contributions

How often you plan to add money
Amount added each month
Annual increase in contributions (%)
When contributions are made

Investment Returns

Expected annual return (%)
How often returns compound
Standard deviation of returns (%)
Expected annual inflation (%)

Tax Considerations

Type of investment account
Tax rate on investment gains (%)
Annual investment fees (%)
Employer match percentage (%)

Scenario Analysis

Type of analysis to perform
Confidence level for projections