Introduction
Project appraisal techniques are a useful tool to assess the potential benefits and impacts of
undertaking a project or a new development.
Three widely used and accepted methods used by finance and project managers are:
Payback Method
Accounting Rate of Return
Net Value & Net Present Value
This paper will exemplify and evaluate each of the three project appraisal techniques and
highlight validity as an aid to decision making.
The following example will be used to illustrate each technique:
Initial Capital Cost *ƒ*‹†500,000
Lifespan 6 years
Cost of Capital 6 %
Residual Value 4 % of the initial capital cost
Additional Net Cash Flows:
Year 1 *ƒ*‹†50,000
*ƒ*‹†75,000
*ƒ*‹†100,000
*ƒ*‹†120,000
*ƒ*‹†90,000
*ƒ*‹†80,000
Discount Factors based on a 6% cost of capital:
Year 1 0.943
0.890
0.840
0.792
0.747
0.705
Payback Method
This is the simplest method of looking at one or more investments projects or ideas.
The payback method calculates the length of time it will take for the net cash flows to
recover the initial capital costs. When comparing projects this technique holds that, all
other things being equal, the better project is the one with the shorter payback.
A company may also compare the payback period of a project with the company average
or target when deciding whether to undertake a project.
This technique has been illustrated in Example 1.
Example 1
Initial capital *ƒ*‹†500,000
Year Net Cash Flow (*ƒ*‹†) Cumulative Net cash flow (*ƒ*‹†) Remainder (*ƒ*‹†)
1 50,000 50,000 450,000
2 75,000 125,000 375,000
3 100,000 225,000 275,000
4 120,000 345,000 155,000
5 90,000 435,000 65,000
6 80,000 515,000
1. payback is after 5 years.
The number of months is calculated as below:
Payback period = 65,000 x 12 = 9.75
80,000
Payback period is 5 years + 9.75 months.
Payback period = 5 years 10 months
2. Payback period = 65,000 x 365 = 296.56 days
80,000
Payback period = 297 days
From the table in example 1 it can be seen that the project earns the initial investment of
*ƒ*‹†500, 000 in year 6.
Calculation 1 shows the actual period is approximately 5 years and 10 months or 296 days
(calculation 2).
Standing alone this information does conclude whether the project is viable or not.
Where there are two or more projects the one with the shorter payback is considered the
better project. For example if another project had a payback of 10 years, and all other
factors were constant, then using payback this project should be accepted.
In the case of just one project being appraised then the payback period needs to be
compared with the company target requirement the current average.
Benefits of Payback.
The main benefit of the payback method is that it is a very simplistic and easily understood
