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Compound annual growth rate (CAGR) is a business and investing specific term for the geometric progression ratio that provides a constant rate of return over the time period. CAGR is not an accounting term, but it is often used to lớn describe some element of the business, for example revenue, units delivered, registered users, etc. CAGR dampens the effect of volatility of periodic returns that can render arithmetic means irrelevant. It is particularly useful to lớn compare growth rates from various data sets of common tên miền such as revenue growth of companies in the same industry or sector.
CAGR is equivalent to lớn the more generic exponential growth rate when the exponential growth interval is one year.
CAGR is defined as:
where is the initial value, is the over value, and is the number of years.
Actual or normalized values may be used for calculation as long as they retain the same mathematical proportion.
In this example, we will compute the CAGR over a three-year period. Assume that the year-end revenues of a business over a three-year period, , have been:
Year-End 2004-12-31 2007-12-31 Year-End Revenue 9,000 13,000
Therefore, to lớn calculate the CAGR of the revenues over the three-year period spanning the "end" of 2004 to lớn the "end" of 2007 is:
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Note that this is a smoothed growth rate per year. This rate of growth would take you to lớn the ending value, from the starting value, in the number of years given, if growth had been at the same rate every year.
Multiply the initial value (2004 year-end revenue) by (1 + CAGR) three times (because we calculated for 3 years). The product will equal the year-end revenue for 2007. This shows the compound growth rate:
For n = 3:
- the Arithmetic Mean Return (AMR) would be the sum of annual revenue changes (compared with the previous year) divided by number of years, or:
In contrast to lớn CAGR, you cannot obtain by multiplying the initial value, , three times by (1 + AMR) (unless all annual growth rates are the same).
- the arithmetic return (AR) or simple return would be the ending value minus beginning value divided by the beginning value:
These are some of the common CAGR applications:
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- Calculating and communicating the average returns of investment funds
- Demonstrating and comparing the performance of investment advisors
- Comparing the historical returns of stocks with bonds or with a savings account
- Forecasting future values based on the CAGR of a data series (you find future values by multiplying the last datum of the series by (1 + CAGR) as many times as years required). As with every forecasting method, this method has a calculation error associated.
- Analyzing and communicating the behavior, over a series of years, of different business measures such as sales, market share, costs, customer satisfaction, and performance.
- Annual growth %
- Arithmetic mean
- Average annual return
- Continuous compounding
- Geometric mean
- Exponential growth