Understanding how an investment has grown over time can help investors review its performance in a structured manner. One commonly used measure for this purpose is the Compound Annual Growth Rate (CAGR). It represents the annualised rate at which an investment grows over a specific period, assuming the growth had taken place at a consistent rate. This article explains CAGR, how it is calculated, and how investors can use it while reviewing investment growth.
What is CAGR?
CAGR represents the annualised growth rate of an investment between its starting and ending values over a specified period. It provides a single growth rate that can be used to understand the overall growth of an investment over multiple years.
A CAGR Calculator can simplify this calculation by using the initial investment value, final value, and investment period to estimate the annualised growth rate. This can help investors review investment growth without having to perform the calculation manually.
CAGR is particularly useful when comparing the growth of an investment over different periods, provided the comparison uses similar timeframes and investment characteristics.
How is CAGR Calculated?
The CAGR formula is:
CAGR = (Final Value / Initial Value)^(1 / Number of Years) − 1
For example, suppose an investment grows from ₹1,00,000 to ₹1,50,000 over five years. The CAGR calculation considers both the change in value and the five-year period to determine the annualised growth rate.
The result is expressed as a percentage.
CAGR is very helpful when comparing the start and end values of an investment over a given period of time. It does not show how the investment moved year on year.
What Does CAGR Tell Investors?
CAGR provides an annualised view of investment growth over a selected period.
For example, an investment may experience different returns in individual years but still have a particular CAGR over the entire period. This allows investors to assess the overall growth rate without analysing every yearly movement separately.
However, CAGR uses an assumption of constant annual growth rate for computations. This does not imply that the growth rate of the investment was the same each year.
Why is CAGR Useful?
CAGR can be useful when reviewing the historical growth of an investment.
Comparing Investment Growth
Investors can use CAGR to compare the growth of different investments over similar periods.
Understanding Annualised Growth
A total percentage increase does not account for the length of the investment period. CAGR converts the overall growth into an annualised figure.
Reviewing Long-Term Performance
CAGR can provide a simple way to review how an investment’s value changed between two points in time.
Supporting Investment Analysis
CAGR can be considered alongside other factors such as risk, volatility, asset allocation, costs, and investment objectives.
CAGR vs Absolute Return
CAGR and absolute return measure investment growth differently.
| Factor | CAGR | Absolute Return |
| Measurement | Annualised growth rate | Total percentage gain or loss |
| Time period | Considers the investment period | Does not annualise the result |
| Compounding | Reflected in the calculation | Not annualised |
| Use | Useful for comparing growth over periods | Useful for viewing total change |
For example, an investment that increases by 30% over three years has an absolute return of 30%. Its CAGR would be lower because the growth occurred over three years rather than one.
See also: Why Busy Professionals Choose Mobile Car Detailing
CAGR and Lumpsum Investments
CAGR is particularly relevant when reviewing a lumpsum investment because the investment has a defined initial value and a final value over a specific period.
A lumpsum calculator can help investors estimate the potential future value of a one-time investment based on the amount invested, expected rate of return, and investment period. This serves a different purpose from a CAGR calculation, which measures annualised growth between an investment’s starting and ending values.
Both calculations can therefore support different parts of investment planning.
What are the Limitations of CAGR?
Although CAGR is useful, it does not provide a complete picture of investment performance.
It does not show the fluctuations that occurred during the investment period. An investment may have experienced significant rises and falls but still show a particular CAGR between the starting and ending dates.
CAGR also does not account for additional investments or withdrawals made during the period. In such cases, other measures may be more appropriate for evaluating performance.
Investors should therefore consider CAGR alongside other relevant measures rather than relying on it alone.
Conclusion
CAGR provides an annualised measure of investment growth between two values over a specified period. A CAGR Calculator can simplify the calculation and help investors understand how an investment’s growth translates into an annualised rate. Platforms like 5paisa provide financial calculators that can help investors estimate and understand investment-related figures while reviewing their financial plans. CAGR can be used to compare past growth but does not indicate volatility or future performance. It is one of the factors among others which can be used by investors when reviewing investment performance.
