How is ROI calculated?

ROI % = [(Final Value - Total Capital Invested) / Total Capital Invested] × 100.

Does ROI account for taxes or inflation?

This tool calculates nominal return on capital. Real return would subtract inflation and capital gains taxes.

Finance CalculatorsClient-Side Calculation Engine

Investment Return Calculator

Calculate total investment gain and ROI percentage return.

Calculator Inputs
Instant Math

Initial Capital Invested

Total Additional Contributions

Current / Final Portfolio Value

Results & Calculation SummaryVerified

Total Return on Investment (ROI)

25.00% ROI

An investment starting at $10,000.00 (plus $2,000.00 in additions) growing to $15,000.00 generates a total gain of $3,000.00 (25.00% return).

Total Net Gain

$3,000.00

Total Capital Invested

$12,000.00

Financial Disclaimer: Results are estimates for informational and educational purposes and may differ from actual lender, bank, tax, or investment results.

What is Investment Return Calculator and How is it Calculated?

The CalcTower Investment Return Calculator measures total portfolio dollar gain and percentage return (ROI) from initial investment and recurring contributions.

Worked Calculation Examples

Stock Portfolio ROI

Input:Initial: $10,000 | Additions: $2,000 | Final: $15,000

Output:Total Gain: $3,000.00 | Return: 25.00% ROI

Total invested $12,000 grew to $15,000 ($3,000 gain = 25% ROI).

Common Real-World Use Cases

Checking a Portfolio’s Overall Return

Calculate the total percentage return on an investment account across its full holding period, including added contributions.

Comparing Two Investments

Run the same initial-to-final value math on two different investments to see which produced the higher ROI.

How to Use the Investment Return Calculator

1Enter Initial Investment amount.
2Enter Current or Final Portfolio Value.
3Optionally enter total additional contributions made during the investment period.
4View total dollar gain and percentage return on investment (ROI).

Pro Tips & Suggestions