WHAT IS CAGR CAGR

What Is CAGR (Compound Annual Growth Rate)

Compound Annual Growth Rate (CAGR) is a commonly used financial measure that shows the average annual rate at which an investment grows over a specific period. It assumes that the investment grows at a consistent rate and that the returns are compounded over time.

Unlike looking at the return for each individual year, CAGR converts the overall growth of an investment into a single annualised rate. This makes it easier to understand long-term performance and compare different investments.

How to Calculate CAGR

Calculating CAGR is relatively simple when you know the starting value, ending value, and investment period.

The CAGR formula is:

CAGR = [(EV / BV)^(1/n) − 1] × 100

Where:

• BV = Beginning Value of the investment

• EV = Ending Value of the investment

• n = Number of years the investment was held

Steps to Calculate CAGR

Step 1: Identify the beginning and ending values
Find out how much you initially invested and what the investment was worth at the end of the selected period.

Step 2: Divide the ending value by the beginning value
This gives you the overall growth multiple of the investment.

Step 3: Apply the time factor
Raise the result to the power of 1 divided by the number of years.

Step 4: Subtract 1
This converts the growth multiple into the annual growth rate.

Step 5: Convert the result into a percentage
Multiply the final figure by 100.

CAGR Calculation Example

Let's understand the calculation with a simple example.

Suppose:

• Initial investment (BV): ₹2,000

• Investment period (n): 2 years

• Final investment value (EV): ₹2,420

Using the CAGR formula:

CAGR = [(EV / BV)^(1/n) − 1] × 100

Substituting the values:

CAGR = [(2,420 / 2,000)^(1/2) − 1] × 100

Calculation

1. Divide the ending value by the beginning value:

2,420 ÷ 2,000 = 1.21

2. Take the square root because the investment period is 2 years:

1.21^(1/2) = 1.10

3. Subtract 1:

1.10 − 1 = 0.10

4. Convert it into a percentage:

0.10 × 100 = 10%

Therefore, the CAGR is 10%.

In simple terms, the investment grew at an average annualised rate of 10% over the two-year period.

Why Is CAGR Useful?

CAGR can be a helpful metric when evaluating the long-term performance of investments. Some of its important uses include:

1. Helps Simplify Investment Performance

Investment returns can move up and down from one year to another. CAGR converts these fluctuations into one annualised growth rate, making the overall performance easier to understand.

2. Makes Investment Comparisons Easier

CAGR can help investors compare the historical performance of different investment options, such as mutual funds, stocks, or REITs. It can also be used to compare an investment's performance with a market benchmark such as the NIFTY 50 or Sensex.

3. Supports Long-Term Financial Planning

CAGR can give investors an idea of how quickly an investment has grown historically. This information can be useful when reviewing financial goals, estimating potential future values, and planning an investment strategy.

Limitations of CAGR

Although CAGR is a useful financial metric, it should not be considered the only measure of investment performance. It has several limitations:

• It hides year-to-year fluctuations: CAGR provides one annualised figure, so it does not show the ups and downs that occurred during the investment period.

• It assumes consistent growth: The calculation presents the investment as though it grew at a steady annual rate, even though actual returns may vary considerably each year.

• It is better suited to lump-sum investments: CAGR does not accurately reflect investments where money is regularly added or withdrawn, such as systematic investment plans (SIPs).

• It looks at historical performance: A strong historical CAGR does not guarantee that the investment will deliver the same returns in the future.

CAGR in Mutual Funds

CAGR is frequently used to understand the historical growth of a mutual fund investment over a particular period. For example, if an investor makes a lump-sum investment and holds it for several years, CAGR can show the annualised rate at which that investment grew.

This makes it easier to compare the historical performance of different mutual funds or other investment options over the same period.

However, investors should look beyond CAGR before making an investment decision. Factors such as risk, volatility, investment objectives, expense ratios, portfolio composition, and the investment horizon should also be considered.

Conclusion

CAGR is a simple yet useful way to understand the annualised growth of an investment over a specific period. By converting the overall increase in value into a single annual growth rate, it makes long-term investment performance easier to interpret and compare.

For investors evaluating mutual funds, stocks, or other assets, CAGR can be a valuable starting point. However, it should be used alongside other financial metrics because past performance alone cannot predict future returns.