ROI Calculator - Return on Investment

The standard Return on Investment formula measures the net profit of an asset relative to its original cost. Mathematically, ROI is expressed as: ROI = (Returned Amount - Invested Amount) / Invested Amount. To find the monetary gain, you simply subtract the initial capital from the total amount returned. For multi-year projects, annualized ROI accounts for the exact time elapsed, converting total return into a compound annual growth rate so you can accurately compare different investment opportunities.

Imagine you invest $10,000 in a small business venture, and after two years, your total returned payout is $14,000. First, find your net gain by subtracting the initial capital from the return: $14,000 - $10,000 = $4,000. Next, divide that net gain by the original investment amount: $4,000 / $10,000 = 0.40. Converting that decimal into a percentage reveals a total ROI of 40% over the two-year period, resulting in an annualized return of approximately 18.3% per year.

Always factor in hidden expenses such as transaction fees, maintenance costs, and taxes when determining your total invested amount. Ignoring these auxiliary expenses can artificially inflate your calculated returns. Additionally, remember that a higher percentage return over a very short timeframe carries entirely different risk profiles compared to steady returns spanning multiple decades.