Compound annual growth rate (CAGR) measures the smoothed annualized growth rate of an investment, revenue, or financial metric over a specified period. In private equity, CAGR is widely used to assess portfolio company performance, fund returns, and revenue expansion while accounting for the effects of compounding.
Unlike a simple average, CAGR provides a more accurate representation of growth by assuming steady year-over-year progress.
Formula for CAGR
CAGR = (Ending Value / Beginning Value) ^ (1 / Number of Years) – 1
Where:
- Ending Value = The final value of the investment or metric at the end of the period
- Beginning Value = The starting value at the beginning of the period
- Number of Years = The total duration of the investment or measurement period
Example
A private equity firm invests in a healthcare company with revenues of $50 million. After five years, the company generates $100 million in revenue. The CAGR is calculated as:
CAGR = ($100M / $50M) ^ (1/5) – 1
CAGR = (2) ^ (0.2) – 1
CAGR = 1.1487 – 1
CAGR = 14.87%
This means the company’s revenue grew at an average annualized rate of 14.87% over five years.
Advantages of Using CAGR in Private Equity
- Eliminates short-term volatility – Provides a clear picture of long-term growth by smoothing year-to-year fluctuations.
- Comparable across investments – Useful for comparing the growth rates of different portfolio companies or fund performance over time.
- Measures investment success – Helps assess whether a private equity firm’s operational improvements or strategic initiatives have led to sustained growth.
Challenges of CAGR
- Ignores interim fluctuations – CAGR assumes steady growth, which may not reflect actual year-to-year volatility.
- Does not account for risk – While CAGR shows growth, it does not indicate the level of investment risk or variability in returns.
- Not suitable for negative values – If the beginning value is negative or if there are large fluctuations, CAGR may not be a useful metric.
Key Considerations
- Fund performance measurement – CAGR is commonly used to track net asset value (NAV) growth of private equity funds over multiple years.
- Revenue and EBITDA growth – Portfolio companies use CAGR to analyze long-term revenue or EBITDA trends for valuation purposes.
- Investor reporting – Limited partners (LPs) use CAGR to assess fund managers’ ability to deliver consistent returns across investment cycles.
CAGR is a fundamental metric in private equity, providing a standardized way to measure long-term growth trends. While it simplifies analysis, investors should also consider additional financial metrics to understand risk, volatility, and sustainability of returns.
