ROI Calculator

Calculate your return on investment with compounding interest, periodic contributions, inflation adjustments, and tax considerations.

Investment Parameters

Initial Investment

Periodic Contribution

Contribution Frequency

Annual Return Rate

0%15%30%

Investment Duration (Years)

1 yr25 yrs50 yrs

Compounding Frequency

Inflation Rate

Marginal Tax Rate

Show inflation-adjusted values

Show after-tax values

Ending Balance$302,370.09$167,414.99 inflation-adj.

Total Invested$130,000.00

Total Gain$172,370.09ROI: 132.59%

Annualized ROI4.31%Over 20 years

After-Tax Return (Compounded)$259,277.57ROI after tax: 99.44%

After-Tax Return (Simple)$266,500.00No compounding

Total Balance

Total Contributions

Inflation-Adjusted

This calculator is for illustrative purposes only. Contributions are assumed at the beginning of each period. Results do not account for investment fees, taxes on dividends, or varying market conditions. Consult a financial advisor before making investment decisions.

Tool built by John Durso at Sleeping On The Job Media. Fork the respository in Github.