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Principles of Accounting, Volume 2: Managerial Accounting

11.5 Compare and Contrast Non-Time Value-Based Methods and Time Value-Based Methods in Capital Investment Decisions

Principles of Accounting, Volume 2: Managerial Accounting11.5 Compare and Contrast Non-Time Value-Based Methods and Time Value-Based Methods in Capital Investment Decisions

When an investment opportunity is presented to a company, there are many financial and non-financial factors to consider. Using capital budgeting methods to narrow down the choices by removing unviable alternatives is an important process for any successful business. The four methods for capital budgeting analysis—payback period, accounting rate of return, net present value, and internal rate of return—all have their strengths and weaknesses, which are discussed as follows.

Summary of the Strengths and Weaknesses of the Non-Time Value-Based Capital Budgeting Methods

Non-time value-based capital budgeting methods are best used in an initial screening process when there are many alternatives to choose from. Two such methods are payback method and accounting rate of return. Their strengths and weaknesses are discussed in Table 11.4 and Table 11.5.

The payback method determines the length of time needed to recoup an investment.

Payback Method
Strengths Weaknesses
  • Simple calculation
  • Screens out many unviable alternatives quickly
  • Removes high-risk investments from consideration
  • Does not consider time value of money
  • Profitability of an investment is ignored
  • Cash flows beyond investment return are not considered
Table 11.4

Accounting rate of return measures incremental increases to net income. This method has several strengths and weaknesses that are similar to payback period but include a deeper evaluation of income.

Accounting Rate of Return
Strengths Weaknesses
  • Simple calculation
  • Screens out many unviable options quickly
  • Considers the impact on income rather than cash flows only (profitability)
  • Does not consider the time value of money
  • Return rates for the entire lifespan of the investment is not considered
  • External factors, such as inflation, are ignored
  • Return rates override the risk of investment
Table 11.5

Because of the limited information each of the non-time value-based methods give, they are typically used in conjunction with time value-based capital budgeting methods.

Summary of the Strengths and Weaknesses of the Time Value-Based Capital Budgeting Methods

Time value-based capital budgeting methods are best used after an initial screening process, when a company is choosing between few alternatives. They help determine the best of the alternatives that a company should pursue. Two such methods are net present value and internal rate of return. Their strengths and weaknesses are presented in Table 11.6 and Table 11.7.

Net present value converts future cash flow dollars into current values to determine if the initial investment is less than the future returns.

Net Present Value
Strengths Weaknesses
  • Considers the time value of money
  • Acknowledges higher risk investments
  • Comparable future earnings with today's value
  • Allows for a selection of investment
  • Requires a more difficult calculation than non-time value methods
  • Required return rate is an estimate, thus any changes to this condition and the impact that has on earnings are unknown
  • Difficult to compare alternatives that have varying investment amounts
Table 11.6

Internal rate of return looks at future cash flows as compared to an initial investment to find the rate of return on investment. The goal is to have an interest rate higher than the predetermined rate of return to consider investment.

Internal Rate of Return
Strengths Weaknesses
  • Considers the time value of money
  • Easy to compare different-sized investments, removes dollar bias
  • A predetermined rate of return is not required
  • Allows for a selection of investment
  • Does not acknowledge higher risk investments because the focus is on return rates
  • More difficult calculation than non-time value methods, and outcome may be uncertain if not using a financial calculator or spreadsheet program
  • If the time for return on investment is important, IRR will not place more importance on shorter-term investments
Table 11.7

After a time-value based capital budgeting method is analyzed, a company can be move toward a decision on an investment opportunity. This is of particular importance when resources are limited.

Before discussing the mechanics of choosing the NPV versus the IRR method for decision-making, we first need to discuss one cardinal rule of using the NPV or IRR methods to evaluate time-sensitive investments or asset purchases: If a project or investment has a positive NPV, then it will, by definition, have an IRR that is above the interest rate used to calculate the NPV.

For example, assume that a company is considering buying a piece of equipment. They determine that it will cost $30,000 and will save them $10,000 a year in expenses for five years. They have decided that the interest rate that they will choose to calculate the NPV and to evaluate the purchase IRR is 8%, predicated on current loan rates available. Based on this sample data, the NPV will be positive $9,927 ($39,927 PV for inflows and $30,000 PV for the outflows), and the IRR will be 19.86%. Since the calculations require at least an 8% return, the company would accept the project using either method. We will not spend additional time on the calculations at this point, since our purpose is to create numbers to analyze. If you want to duplicate the calculations, you can use a software program such as Excel or a financial calculator.

Concepts In Practice

Solar Energy as Capital Investment

A recent capital investment decision that many company leaders need to make is whether or not to invest in solar energy. Solar energy is replacing fossil fuels as a power source, and it provides a low-cost energy, reducing overhead costs. The expensive up-front installation costs can deter some businesses from making the initial investment.

Businesses must now choose between an expensive initial capital outlay and the long-term benefits of solar power. A capital investment such as this would require an initial screening and preference process to determine if the cost savings and future benefits are worth more today than the current capital expenditure. If it makes financial sense, they may look to invest in this increasingly popular energy source.

Now, we return to our comparison of the NPV and IRR methods. There are typically two situations that we want to consider. The first involves looking at projects that are not mutually exclusive, meaning we can consider more than one possibility. If a company is considering non-mutually exclusive opportunities, they will generally consider all options that have a positive NPV or an IRR that is above the target rate of interest as favorable options for an investment or asset purchase. In this situation, the NPV and IRR methods will provide the same accept-or-reject decision. If the company accepts a project or investment under the NPV calculation, then they will accept it under the IRR method. If they reject it under the NPV calculation, then they will also reject under the IRR method.

The second situation involves mutually exclusive opportunities. For example, if a company has one computer system and is considering replacing it, they might look at seven options that have favorable NPVs and IRRs, even though they only need one computer system. In this case, they would choose only one of the seven possible options.

In the case of mutually exclusive options, it is possible that the NPV method will select Option A while the IRR method might choose Option D. The primary reason for this difference is that the NPV method uses dollars and the IRR uses an interest rate. The two methods may select different options if the company has investments with major differences in costs in terms of dollars. While both will identify an investment or purchase that exceeds the required standards of a positive NPV or an interest rate above the target interest rate, they might lead the company to choose different positive options. When this occurs, the company needs to consider other conditions, such as qualitative factors, to make their decision. Future cost accounting or finance courses will cover this content in more detail.

Final Comparison of the Four Capital Budgeting Options

A company will be presented with many alternatives for investment. It is up to management to analyze each investment’s possibilities using capital budgeting methods. The company will want to first screen each possibility with the payback method and accounting rate of return. The payback method will show the company how long it will take to recoup their investment, while accounting rate of return gives them the profitability of the alternatives. This screening will typically get rid of non-viable options and allow the company to further consider a select few alternatives. A more detailed analysis is found in time-value methods, such as net present value and internal rate of return. Net present value converts future cash flows into today’s valuation for comparability purposes to see if an initial outlay of cash is worth future earnings. The internal rate of return determines the minimum expected return on a project given the present value of cash flow expectations and the initial investment. Analyzing these opportunities, with consideration given to time value of money, allows a company to make an informed decision on how to make large capital expenditures.

Ethical Considerations

Barclays and the LIBOR Scandal

As discussed in Volkswagen Diesel Emissions Scandal, when a company makes an unethical decision, it must adjust its budget for fines and lawsuits. In 2012, Barclays, a British financial services company, was caught illegally manipulating LIBOR interest rates. LIBOR sets the interest rate for many types of loans. As CNN reported, “LIBOR, which stands for London Interbank Offered Rate, is the rate at which banks lend to each other, and is used globally to price financial products, such as mortgages, worth hundreds of trillions of dollars.”4

While Volkswagen decided to cover the costs related to fines and lawsuits by reducing its capital budget for technology and research, Barclays took a different approach. The company chose to “cut or claw back of about 450 million pounds ($680 million) of pay from its staff” and from past pay packages “another 140 million pounds ($212 million).”5 Instead of reducing other areas of its capital budget, Barclays decided to cover its fines and lawsuits by cutting employee compensation.

The LIBOR scandal involved a number of international banks and rocked the international banking community. An independent review of Barclays reported that “if Barclays is to achieve a material improvement in its reputation, it will need to continue to make changes to its top levels of pay so as to reflect talent and contribution more realistically, and in ways that mean something to the general public.”6 Previously, as described by the company website, “Barclays has been a leader in innovation; funding the world’s first industrial steam railway, naming the UK’s first female branch manager and introducing the world’s first ATM machine.”7 The positive reputation Barclays built over 300 years was tarnished by just one scandal, and demonstrates the difficulty of calculating just how much unethical behavior will cost a company’s reputation.


  • 4Charles Riley. “Remember the Libor Scandal? Well It's Coming Back to Haunt the Bank of England.” CNN. April 10, 2017.
  • 5Steve Slater. “Barclays to Cut Pay by $890 Million over Scandals: Source.” Reuters. February 27, 2013.
  • 6Anthony Salz. Salz Review: An Independent Review of Barclays’ Business Practices. April 3, 2018.
  • 7“Our History.” Barclays. n.d.
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