Generally speaking, your return on invested capital, or ROIC, refers to the profits you receive relative to the money you've invested. For example, if you spent $100,000 to start a business and you earned $20,000 in after-tax profit over the first year, your return on investment would be 20%. It's also important to take debt into account, if applicable, as debt is also a form of capital used to fund a business' operations.
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Calculating return on invested capital
The general formula for calculating ROIC is:
So, the first step is to locate the company's net income after tax, which can be found on its income statement. This is the amount of money the company earned after paying all expenses -- cost of goods sold, operating costs, interest, taxes, etc.
Invested capital typically refers to a combination of shareholders' equity and long-term debt, both of which can be found on the balance sheet. Shareholders' equity is generally the last item listed, and can be calculated as total assets minus total liabilities. It's worth noting that there are other possible ways to calculate a company's invested capital-for example, many ROIC calculations subtract a company's excess cash since it isn't being used to generate income.
Once you have the two parts of the ROIC formula, simply divide the net income by the invested capital. In order to convert your result to a percentage, multiply by 100.
Let's take a look at a real-world example to illustrate how this is calculated. When looking at Wal-Mart's latest annual income statement, we can find that the company earned after-tax income of $14.7 billion. According to the balance sheet for the same time period, Wal-Mart had $80.55 billion in stockholders' equity and $44 billion in long-term debt, for a total invested capital of $124.55 billion. Dividing the after-tax income by the invested capital shows a ROIC of 11.8% for the year.
Why ROIC is useful
Many investors confuse ROIC with profit margin. Unlike the latter, ROIC is a measurement of how efficiently a company is using its capital to generate a profit. Just because a company has a high profit margin doesn't necessarily mean that it's using its capital efficiently, and vice versa. ROIC is useful for comparing a company's efficiency to others in the same industry, as well as to its own historical trends.
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