A tree with branches of various lengths, each labeled with a compound annual growth rate (CAGR) percentage. Branches represent individual investments.

Understanding Compound Annual Growth Rate (CAGR): Calculation, Uses and Importance for Investors

What is Compound Annual Growth Rate (CAGR)

The compound annual growth rate (CAGR) is a popular metric for evaluating the performance of long-term investments, particularly when comparing different assets or companies. It represents the annual rate of return that would be needed for an investment to grow from its initial value to its final value over a given period of time if all profits were reinvested. In contrast to other measurement methods, such as internal rates of return or arithmetic mean returns, CAGR offers a smoothed representation of investment performance that is easier to compare across various investments.

Understanding the significance and differences between compound annual growth rate and alternative performance measures is crucial for investors seeking to make informed decisions regarding their portfolios. In this section, we will explore the definition of compound annual growth rate, its calculation methodology, and its applications in investment evaluation.

Calculating CAGR
To calculate CAGR, simply follow these steps:
1. Determine the beginning value (BV) and ending value (EV) of your investment or the asset you are evaluating.
2. Divide the EV by the BV to find the growth factor (GF).
3. Raise the GF to the power of 1 divided by the number of years in the period between the BV and EV.
4. Subtract one from the resulting number.
5. Multiply the result by 100 to express it as a percentage.

The formula for calculating CAGR mathematically is:
CAGR = [(EV/BV) ^ (1/n)] – 1 × 100

In this equation, EV represents the ending value, BV signifies the beginning value, and n denotes the number of years between the two values.

Using CAGR for Evaluating Investment Performance
CAGR can be a valuable tool in evaluating investment performance by offering a smoothed representation of annualized returns. By calculating the compound annual growth rate, investors can compare different investments’ performance over an extended period and assess how they have grown relative to each other. This is especially useful when dealing with investments that have varying levels of volatility or unstable year-over-year returns.

CAGR also provides a consistent methodology for comparing investments against benchmarks, such as the S&P 500 index, or market indices tailored to specific industries or sectors. By understanding an investment’s CAGR, investors can determine if it has outperformed or underperformed compared to the broader market and make more informed decisions regarding portfolio allocation.

CAGR vs. Other Performance Measures
Compared to other performance measures, such as annualized returns, geometric mean, arithmetic mean, and time-weighted rate of return, CAGR offers several advantages for investors:
1. It smooths out yearly fluctuations in investment performance, making it easier to compare investments.
2. It can be used to compare different asset classes or companies with varying degrees of volatility.
3. It is a consistent measure for evaluating investments over a given period, regardless of the number of years involved.
4. It facilitates comparisons between investments and benchmarks to determine outperformance or underperformance.

In the next sections, we will further explore CAGR’s limitations, variations in its calculation, and real-life examples of its application. Stay tuned for more valuable insights into this essential investment metric.

How to Calculate Compound Annual Growth Rate (CAGR)

The Compound Annual Growth Rate, or CAGR, is an essential metric used by investors to determine the average annual growth rate of their investments over a defined period. By calculating CAGR, one can compare the performance of various investment opportunities and evaluate the compounded effect of returns reinvested each year. In this section, we will explore how to calculate CAGR using a simple yet effective formula.

Formula for CAGR:
To calculate the Compound Annual Growth Rate, use the following formula:
CAGR = [(Ending Value / Beginning Value) ^ (1 / Number of Years)] – 1 x 100%

Let’s Break It Down:
First, identify your Beginning Value (BV), Ending Value (EV), and the Number of Years (n). For example, if you invest $5,000 in an asset that grows to $7,500 over a five-year period, your beginning value is $5,000, the ending value is $7,500, and the number of years is five.

Step 1: Divide Ending Value by Beginning Value:
Ending Value / Beginning Value = 1.5

Step 2: Raise the result to the power of one divided by the number of years:
1.5 ^ (1/5) = 1.135

Step 3: Subtract one from the result and multiply by 100%:
(1.135 – 1) x 100% = 13.5%

So, the CAGR for this investment is 13.5%. This represents the annual growth rate at which an initial investment of $5,000 would have grown to $7,500 over five years if all profits were reinvested each year.

Understanding CAGR:
By calculating CAGR, investors can understand the long-term performance and potential future value of their investments. It also offers a way to compare investment options, as it provides a consistent measure of growth despite varying annual returns. However, keep in mind that CAGR does not account for volatility or the timing of returns. Therefore, it is essential to consider both CAGR and other performance measures when assessing potential investments.

Using CAGR for Comparison:
When comparing investments using CAGR, it’s important to remember that a higher CAGR does not always mean a better investment. It simply means that the investment grew at a faster rate over the given time frame. For example, consider two investments with different levels of volatility: one growing at a steady 7% annually and the other experiencing growth of 12%, but with considerable fluctuations. The investment with the higher CAGR might appear more attractive initially, but it could have had greater risks or uncertainties attached to it. Therefore, understanding both the CAGR and the underlying risk factors is crucial when making investment decisions.

Real-life Application:
CAGR can be applied in various scenarios, from evaluating the performance of stocks, bonds, mutual funds, or even businesses. By using CAGR as a benchmark, investors can determine whether their investments are outperforming or underperforming against specific indices or industry averages. Additionally, it can help assess the potential future growth and value of an investment, guiding informed decisions in various financial contexts.

In summary, the Compound Annual Growth Rate (CAGR) is a valuable tool for investors seeking to compare investment performance over time. By calculating CAGR and understanding its significance, you can make more informed decisions when considering new investments or evaluating existing ones. Keep in mind that while CAGR offers important insights into an investment’s long-term growth potential, it should be used in conjunction with other performance measures to ensure a well-rounded analysis.

Using CAGR for Evaluating Investment Performance

The compound annual growth rate (CAGR) is an essential figure for investors to evaluate the performance of their investments over time. It helps smooth out returns, making it easier to compare and understand different investment alternatives or business measures. In this section, we will discuss how CAGR can be used for evaluating investment performance.

First, let’s recap what compound annual growth rate (CAGR) is. The CAGR represents the rate of return required for an investment to grow from its beginning balance to its ending balance, assuming profits are reinvested at the end of each period of the investment’s life span. CAGR is widely used because it measures a smoothed rate of return and can be applied to various types of investments, including stocks, bonds, real estate, mutual funds, or business measures.

To calculate the compound annual growth rate, you need to know the beginning balance (BV), ending balance (EV), and number of years (n) as shown in the formula: CAGR = ((BV * EV)^(1/n)) – 1 × 100%. For example, let’s consider an investment with a starting balance of $10,000 that grew to $23,865 over three years. Using this information, the compound annual growth rate for the investment would be: CAGR = ((10,000 * 23,865)^(1/3)) – 1 × 100% = 23.86%.

One of the primary advantages of using the compound annual growth rate is its ability to smooth investment performance by ignoring the fact that some years may produce vastly different returns compared to others. For instance, if we analyze a three-year investment with uneven yearly returns, such as 15% in year one, -3% in year two, and 20% in year three, the CAGR calculation would result in an average annual growth rate of approximately 9.46%. This smoothed return is a more accurate representation of long-term investment performance compared to the volatile yearly returns.

Investors frequently use the compound annual growth rate for comparing investments within their portfolio or against various market indices. By calculating CAGRs, investors can easily determine how well one stock performed relative to other stocks in their peer group. Additionally, CAGRs can help make forecasts of future values by evaluating past performance and understanding potential trends.

For instance, let’s consider two uncorrelated investments – Investment A and Investment B. In any given year during the period, one investment may be rising while the other falls. Using the CAGR method to compare their three-year returns would smooth the annual return for both investments, allowing a more straightforward comparison. This is particularly useful when evaluating high-yield bonds compared to stocks or real estate investments.

Furthermore, the compound annual growth rate can be used to evaluate business measures of one or multiple companies alongside each other. For example, comparing CAGRs of market share and customer satisfaction across similar companies reveals strengths and weaknesses, allowing investors to make more informed decisions.

It’s important to note that while CAGR is a valuable tool for evaluating investment performance, it does not reflect the investment risk involved. Therefore, when using CAGR to compare investments, consider pairing it with other performance measures such as standard deviation, beta, or Sharpe ratio, which can help shed light on investment volatility and overall risk.

In conclusion, understanding how to calculate compound annual growth rate (CAGR) and applying it to evaluate investment performance is an essential skill for investors. CAGR not only smooths returns but also facilitates comparisons between various investment alternatives, business measures, and market indices. By becoming proficient in using this powerful financial metric, you’ll be better equipped to make informed decisions that maximize your portfolio’s potential growth while minimizing risk.

CAGR vs. Other Performance Measures

Compound Annual Growth Rate (CAGR) is an essential metric for investors evaluating investments over extended periods, offering insights into an investment’s performance smoothing out short-term fluctuations. However, there are other performance measures that might be useful in various scenarios or provide complementary perspectives to CAGR. In this section, we will compare the compound annual growth rate with several other commonly used metrics: annualized returns, geometric mean, arithmetic mean, and time-weighted rate of return.

Annualized Returns

Annualized returns represent a single year’s return on investment after considering the reinvestment of all earnings, dividends, and capital gains throughout the investment period. In contrast to CAGR, annualized returns focus on the performance over discrete time intervals. While this metric can offer insight into short-term performance or fluctuations, it does not provide an overall view of how well the investment has grown over its lifetime.

Geometric Mean

The geometric mean is a statistical method used for calculating compounded growth rates where returns are assumed to be continuously compounded throughout the investment period. This measure takes into account all compounded returns and offers a more precise representation than arithmetic mean when dealing with volatile investments. However, it may not be as convenient or easy to calculate or compare as CAGR or annualized returns.

Arithmetic Mean

The arithmetic mean is the sum of all returns in an investment’s portfolio divided by the total number of periods. It calculates the average return on an investment based on individual returns. Arithmetic mean is less suitable than other measures for evaluating long-term investment growth since it does not consider compounding effects over multiple periods and may be influenced heavily by extreme values within a data set.

Time-Weighted Rate of Return (TWRR)

The time-weighted rate of return represents the return achieved after investing an initial capital amount at the beginning of each period and reinvesting all proceeds, including both gains and losses, into subsequent periods until the end of the investment. Unlike CAGR, TWRR considers the exact timing of cash flows, making it ideal for measuring the impact of sequential investment decisions and market fluctuations on an investment’s overall performance.

Comparing CAGR to Other Measures: Use-Cases and Advantages

Each metric has its advantages and limitations, and investors may choose to use various measures depending on their objectives and investment styles. While CAGR provides a convenient way to evaluate the smoothed long-term performance of an investment, it might not fully reflect the volatility or risk inherent in the underlying assets. Conversely, other measures such as time-weighted rate of return can help investors assess how well their investments have responded to market movements and investment decisions throughout a given period.

Investors may also choose to employ multiple performance measures to obtain a more comprehensive understanding of their portfolio’s growth dynamics. For example, combining CAGR with TWRR might offer a better assessment of the underlying asset’s risk-adjusted returns.

Understanding the unique advantages and limitations of each measure can enable investors to make informed decisions based on their investment goals and risk tolerance. As always, it is essential to consult the specific circumstances and context while choosing performance measures for evaluating investments.

CAGR Formula Modifications

Understanding variations in the compound annual growth rate (CAGR) formula can help investors calculate the present value or future value of money and find a hurdle rate of return. Let’s explore these modifications to deepen our understanding of CAGR.

Present Value vs. Compound Annual Growth Rate

The present value of an investment is the value it possesses today, considering its potential future cash flows. To calculate the present value, you’ll need to use a formula that includes a discount rate and time horizon. The compound annual growth rate, on the other hand, can be rearranged to find the future value of money.

The CAGR formula can be manipulated into the following form:
FV=PV(1+CAGR)n

Where:
– FV is the future value
– PV is the present value
– CAGR is the compound annual growth rate
– n represents the number of periods.

To calculate the present value, set the equation equal to the present value and solve for PV:
PV=FV/(1+CAGR)n

This rearranged formula enables you to calculate the present value of an investment given a future value, compound annual growth rate, and time horizon.

Hurdle Rate of Return Calculation

A hurdle rate is the minimum required return for an investment to be considered attractive or worthwhile. The CAGR formula can also be manipulated to find the hurdle rate of return (HRR) by setting FV equal to the initial investment amount, PV:

PV=PV(1+CAGR)n

Solving for CAGR:
CAGR=(1+HRR)n-1

With this formula, you can determine what hurdle rate is required for an investment to achieve a desired future value.

Adjusting the CAGR for Shorter Periods

Calculating compound annual growth rates for shorter periods may require fractional years in the denominator of the exponent. To calculate the CAGR for periods under one year, simply divide the total number of days by 365, then add a decimal representation of any remaining fractions of a year. For instance, if you held an investment for 213 days (0.583 years), you’d calculate:

CAGR=(EV/BV)n ^(1/(n+0.0))-1
where n=number of whole years and 0.0 is the fractional representation of the period.

For instance, if you held a stock for 213 days (0.583 years), calculating the CAGR as follows:
CAGR=(EV/BV)^(1/(1+0.583))-1

In conclusion, understanding compound annual growth rate variations can provide investors with powerful insights into present value, future value, and hurdle rate of return calculations. By mastering these modifications, you’ll have a more comprehensive understanding of how to use CAGR for investment analysis and decision making.

Calculating CAGR for Shorter Periods

Investors often encounter situations where they hold an investment for less than a full year. In such cases, calculating the compound annual growth rate (CAGR) with standard methods might result in errors or misunderstandings. To accurately calculate CAGR for investments with shorter holding periods, it is essential to adapt the formula to account for fractional years.

First, let us recall the formula for calculating the CAGR:
CAGR = ((Ending Value / Beginning Value) ^ (1/Number of Years)) – 1 × 100%

Now, we will modify it for shorter periods by introducing fractional years. The adjusted formula can be written as follows:

CAGR = ((Ending Value / Beginning Value) ^ (Total Number of Days in Holding Period / 365)) – 1 × 100%

This formula takes into account the number of days an investment is held, which may be less than a full year. For instance, if an investor bought shares on March 20th and sold them on November 15th in the same year, the holding period would span 193 days (from March 20 to November 15).

Let’s see how this formula works in practice by calculating CAGR for a hypothetical investment:

Suppose an investor bought 100 shares of XYZ Corporation on June 1, 2023, for $40 per share, totaling $4,000. On December 15, they sold the shares for $60 each, earning a profit of $2,000. The holding period was 183 days (from June 1 to December 15), so:

Total number of days in holding period = 183
Beginning value = $4,000
Ending value = $6,000

To find the CAGR for this investment using the modified formula:
CAGR = ((Ending Value / Beginning Value) ^ (Total Number of Days in Holding Period / 365)) – 1 × 100%
= ((6,000 / 4,000) ^ (183 / 365)) – 1 × 100%
≈ 27.23%

With this calculation, we can determine that the investment grew by approximately 27.23% per year during the holding period, considering fractional years. This more accurate calculation provides valuable insights for evaluating the investment’s performance compared to a full-year CAGR.

CAGR Example: Comparing Investments and Companies

The compound annual growth rate (CAGR) is an essential financial metric for understanding investment performance. It represents a smoothed, averaged rate of return over a given time period, making it an excellent tool for comparing various investments or business measures. In this section, we will discuss real-life examples and explore how to use CAGR effectively to compare different investments and companies.

First, let us look at how to apply the CAGR concept when comparing investment performance:

Imagine you are considering two mutual funds – Fund A and Fund B – each with varying annual returns over a five-year period as shown below:

| Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|———|——–|——–|——-|——-|
| 12% | 8% | 7% | -2% | 10% |
| 5% | 15% | -3% | 6% | 9% |

Using the CAGR calculation, let us evaluate the five-year performance of each fund:

Fund A:
Ending Balance (Year 5): $10,000 * 1.12 * 1.08 * 1.07 * (-0.98) * 1.10 = $12,436.58
CAGR for Fund A: [($12,436.58 / $10,000) ^ (1/5)] – 1 = 7.9%

Fund B:
Ending Balance (Year 5): $10,000 * 1.05 * 1.15 * (-0.97) * 1.06 * 1.09 = $13,824.75
CAGR for Fund B: [($13,824.75 / $10,000) ^ (1/5)] – 1 = 9.3%

Based on these calculations, Fund B has a higher CAGR than Fund A over the five-year period.

Now let us look at an example of how CAGR can be used to compare companies’ business measures:

Consider two retail giants – Big-Sale Stores and SuperFast Cable – and their performance in terms of market share and customer satisfaction over a five-year period as shown below:

| Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|———|——–|——–|——-|——-|
| 4.8% | 6.0% | 5.7% | 5.2% | 5.1% |
| -2.5% | 3.6% | 1.2% | 3.9% | 4.8% |

Using the CAGR calculation, we can evaluate Big-Sale’s market share and customer satisfaction performance:

Market Share CAGR for Big-Sale Stores: [(1 + 0.048) * (1 + 0.060) * (1 + 0.057) * (1 + 0.052) * (1 + 0.051)]^(1/5) – 1 = 1.82%
Customer Satisfaction CAGR for Big-Sale Stores: [(1 – 0.025) * (1 + 0.036) * (1 + 0.012) * (1 + 0.039) * (1 + 0.048)]^(1/5) – 1 = -0.58%

Using the same approach, we can calculate SuperFast Cable’s market share and customer satisfaction CAGR:

Market Share CAGR for SuperFast Cable: [(1 + 0.036) * (1 – 0.025) * (1 + 0.012) * (1 + 0.039) * (1 + 0.048)]^(1/5) – 1 = 4.7%
Customer Satisfaction CAGR for SuperFast Cable: [(1 + 0.036) * (1 + 1.2) * (1 – 0.025) * (1 + 0.039) * (1 + 0.048)]^(1/5) – 1 = 6.3%

In this example, SuperFast Cable has a higher market share CAGR than Big-Sale Stores but lower customer satisfaction CAGR. Comparing the CAGRs of business measures within each company provides valuable insights into their strengths and weaknesses.

Understanding the Limitation of CAGR

The compound annual growth rate (CAGR) is a widely used and valuable method for evaluating investment performance, especially when comparing investments that have experienced varying year-to-year returns. However, it’s essential to recognize the limitations of this metric in providing a complete understanding of an investment’s risk profile and volatility.

First, CAGR does not reflect the actual volatility or risk inherent in each investment throughout its lifetime. Annualized returns can be affected by market fluctuations, which are not taken into account when calculating CAGR. For instance, a high growth rate in one year may be followed by negative growth rates in subsequent years. In such cases, CAGR might give an overly optimistic perspective on the investment’s long-term performance.

Additionally, CAGR assumes consistent and constant growth throughout the entire investment period, which is rarely the case in real life. Most investments do not exhibit linear growth; instead, they experience periods of varying returns. In reality, market conditions, economic factors, or company-specific events can significantly impact an investment’s performance from year to year. CAGR smoothes these variations and provides a single, representative figure that doesn’t fully capture the underlying volatility or risk involved in each investment.

Moreover, comparing CAGR of investments with significantly different holding periods can lead to misleading results due to the time-value of money concept. For instance, assuming two investments have identical CAGRs, the one with a shorter holding period might have experienced more significant price fluctuations and risks but still achieved the same long-term growth rate as another investment with a longer holding period. In such cases, comparing only their respective CAGRs may not provide a comprehensive understanding of their performance or risk profiles.

In conclusion, while the compound annual growth rate is a valuable tool for evaluating investment performance and comparing various investments, investors should be aware of its limitations when using it as a sole metric to assess an investment’s true risk profile and volatility. Other factors, such as standard deviation, beta, or Sharpe ratio, can complement CAGR to provide a more comprehensive analysis of an investment’s risk-reward characteristics.

CAGR and Time Value of Money

Compound Annual Growth Rate (CAGR) is an essential measure for evaluating investment performance over time. While it does not reflect investment risk, it offers investors a way to compare different investments or companies’ growth rates. But how is CAGR related to another important financial concept: time value of money? In this section, we will discuss the connection between CAGR and the Time Value of Money (TVM).

The time value of money refers to the principle that a dollar received today is worth more than a dollar received in the future. This concept is based on the idea that money can be invested to earn interest or returns, so a dollar today is worth more than a dollar tomorrow because it can be put into an investment to generate income.

CAGR and TVM share some similarities. Both concepts involve calculating the future value of money based on past performance, whether that’s in terms of investments, business growth, or other financial measures. However, CAGR and TVM differ in their calculations and applications.

To better understand this relationship, let us first review how each concept is calculated:

CAGR Formula:
CAGR = [(Ending Value ÷ Beginning Value)^ (1 ÷ Number of Years)] – 1 x 100%

Time Value of Money Formula:
FV = PV * (1 + r/n)^ (nt)

PV: Present value
FV: Future value
r: Annual interest rate or return
n: Number of times the interest is compounded per year
t: Time in years

Although both formulas calculate future values, CAGR’s primary goal is to determine the annual growth rate over a specific period. In contrast, TVM focuses on calculating the future value of an investment given a present value and interest rate.

The connection between CAGR and TVM becomes more apparent when we consider the compounding aspect of both concepts. Both require the assumption that the investment grows at a steady, consistent rate over time, with profits being reinvested to generate additional returns. This is why CAGR can be calculated using the formula for the future value of money:

CAGR = [(Future Value ÷ Present Value)^ (1 ÷ Number of Years)] – 1 x 100%

By recognizing this link, investors can leverage CAGR to calculate the future value or present value of investments using different time frames and compounding frequencies. For example:

Calculating the Future Value Using CAGR:
If an investor has a $1,000 investment that grows at a 6% annual rate for ten years, their future value can be calculated using both CAGR and TVM.

CAGR calculation:
CAGR = [(Ending Value ÷ Beginning Value)^ (1 ÷ Number of Years)] – 1 x 100%
CAGR = [($1,000 * 1.06^10) ÷ $1,000] x 100% – 1 x 100% ≈ 17.32%

TVM calculation:
FV = PV * (1 + r/n)^ (nt)
FV = $1,000 * (1.06)^10

Investors can also calculate the present value using CAGR and TVM by rearranging the formulas. For example, to find the present value of a future cash flow, an investor would use:

PV = FV ÷ (1 + r/n)^ nt

Using CAGR to Calculate Present Value:
CAGR = [(Present Value ÷ Future Value)^ (1 ÷ Number of Years)] – 1 x 100%

However, it is essential to note that while CAGR can be used for TVM calculations, the former is not as versatile or comprehensive as the latter. TVM offers more flexibility by allowing investors to consider multiple compounding frequencies and varying interest rates. Therefore, investors often prefer using TVM when dealing with complex financial scenarios, such as calculating loan payments, retirement savings, or investing in bonds and stocks.

In conclusion, while CAGR and TVM serve different purposes and have distinct calculations, they share a common theme: the importance of understanding the impact of compounding on investments over time. By recognizing their connection, investors can expand their toolkit to evaluate investment performance using various methods, ultimately making more informed decisions in the ever-evolving financial landscape.

FAQs on Compound Annual Growth Rate (CAGR)

Compound Annual Growth Rate, or CAGR, is a measurement used to evaluate an investment’s performance over a specific period by calculating the yearly growth rate that would be required for the investment’s value to reach its ending value if all gains were reinvested. In this FAQ section, we will answer common questions about the calculation and use of CAGR.

What is Compound Annual Growth Rate (CAGR)?
CAGR represents the constant annual rate of return that an investment would need to generate each year for its beginning balance to grow into its ending value over a given period, considering all earnings are reinvested at the end of each year.

How do I calculate CAGR?
To find the Compound Annual Growth Rate (CAGR), use the following formula:

CAGR = [(Ending Value / Beginning Value) ^ 1/Number of Years] – 1 × 100%

Example: If an investment has a beginning value of $5,000 and ends with $12,623 after five years, the CAGR would be calculated as follows:
CAGR = [(12,623 / 5,000) ^ 1/5] – 1 × 100%
CAGR ≈ 13.74%

What are the limitations of CAGR?
While CAGR is an essential metric for evaluating investment performance over a specific period, it has its limitations. It does not account for volatility or the timing of returns, only showing an average growth rate that may not reflect the actual risk and variability within the investment.

Why do investors use CAGR?
CAGR is beneficial to investors as it provides a clear representation of long-term investment performance and can help compare different investments against each other. It smooths out yearly fluctuations in returns, making it easier for investors to evaluate various alternatives.

How does CAGR differ from other performance measures like Arithmetic Mean or Geometric Mean?
Arithmetic Mean and Geometric Mean are alternative methods for evaluating investment performance. Arithmetic Mean calculates the total return over a specific period divided by the number of years, whereas Geometric Mean considers the compounded returns, but it does not smooth out annual fluctuations in returns as CAGR does.

How do I calculate CAGR for a shorter holding period?
If your investment has a shorter holding period, you can still use the same CAGR formula, but ensure that the number of years is adjusted to include any fractional years if needed. This calculation will provide the yearly growth rate required for your investment’s value to grow from its beginning balance to its ending balance within the specified time frame.