Application: A Letter to the Board of Directors
WMBA 6050: Accounting for Management Decision Making
Accounting Rate of Return/Return on Investment (ROI)
A company invested $10,000,000 in a project that has a 10-year life and no salvage value. The
expected operating income is $4,000,000 in each of the next ten years, and the tax rate is 40%.
The steps to determine the ROI are as follows:
1. Compute net income
Operating income $4,000,000
Depreciation 1,000,000 ($10,000,000/10-year life)
Net income before taxes 3,000,000
Taxes (40%) 1,200,000 ($3,000,000 x .40)
Net income $1,800,000
2. Compute average net income and average book value of the investment
Calculate the average book value of the investment by taking the beginning book value, adding
the ending book value, and dividing by 2. The ending book value each year is the beginning
book value for the year less the depreciation for the year.
Year Net
Income
Average Book Value
of Investment
1 1,800,000
9,500,000 (10,000,000 + 9,000,000)/2
2 1,800,000
8,500,000 (9,000,000 + 8,000,000)/2
3 1,800,000
7,500,000 (8,000,000 + 7,000,000)/2
4 1,800,000
6,500,000 (7,000,000 + 6,000,000)/2
5 1,800,000
5,500,000 (6,000,000 + 5,000,000)/2
6 1,800,000
4,500,000 (5,000,000 + 4,000,000)/2
7 1,800,000
3,500,000 (4,000,000 + 3,000,000)/2
8 1,800,000
2,500,000 (3,000,000 + 2,000,000)/2
9 1,800,000
1,500,000 (2,000,000 + 1,000,000)/2
10 1,800,000 500,000 (1,000,000 + 0)/2
Average 1,800,000
5,000,000 (An easy way to find the average book value of
The investment is to divide the investment by 2.)
3. Compute ROI
Average annual income from project = 1,800,000 = 36%
Average annual investment in the project 5,000,000