Economic Value Added (EVA) Calculator

The idea: equity is not free

An income statement subtracts interest, so a company that borrows shows a cost for its debt. It does not subtract anything for equity. That silence is what economic profit corrects. Shareholders could have put their money somewhere else of similar risk and earned a return there, and that forgone return is a real cost of using their money — it just never appears in the accounts.

EVA charges for it explicitly. Take operating profit, tax it to get NOPAT, then subtract a rent on every dollar of capital in the business at the rate all capital providers together require. What is left is the profit the business made above what its investors could have earned elsewhere. A company can report a healthy net income and a deeply negative EVA at the same time; that combination is the entire reason the measure exists.

Stern Stewart & Co. trademarked EVA in the early 1990s and built a consulting practice around it, complete with a long list of accounting adjustments intended to strip out distortions — capitalising research spending, undoing goodwill write-offs, converting operating leases. The underlying idea is much older and is usually called residual income. You do not need the full adjustment set to get value out of the measure; you need a defensible NOPAT, a defensible capital base, and a WACC you can justify.

The two forms and why they are the same

The dollar form is EVA = NOPAT − IC × WACC. The spread form is EVA = (ROIC − WACC) × IC. Substituting ROIC = NOPAT ÷ IC into the second gives (NOPAT ÷ IC − WACC) × IC = NOPAT − IC × WACC, so they are the same statement.

They are worth keeping both because they answer different questions. The dollar form tells a manager how much value the period created, which is what you can put in a bonus formula. The spread form tells you why: is the problem that returns are too low, or that the capital base is too large for the profit it supports? A business with a 0.5-point spread on $10bn of capital and one with a 5-point spread on $1bn create the same EVA and are in completely different competitive positions.

Three inputs decide everything. NOPAT comes from EBIT × (1 − tax rate) and should use the cash tax rate on operating profit, not the statutory rate and not the effective rate from the accounts, which is contaminated by the tax shield on interest. Invested capital is the operating capital the business actually employs: total debt plus equity less excess cash, or equivalently net working capital plus net fixed and intangible assets. Excess cash comes out because it is not being used in operations and charging rent on it penalises prudence. WACC blends the cost of equity and the after-tax cost of debt at target weights; use the WACC calculator rather than a round number, because a single point of error on a large capital base swamps everything else in the calculation.

One consistency rule binds all three: the tax must be handled once. NOPAT is after tax and WACC uses the after-tax cost of debt, so the interest tax shield is already inside the discount rate. Deducting interest from EBIT before taxing it as well would count the benefit of debt twice.

How to read the result

The sign is the headline. Positive EVA means the period earned more than every provider of capital required. Negative EVA means it earned less, even if net income was comfortably positive.

The spread tells you the direction of travel for growth. When the spread is positive, adding capital that earns the same return adds EVA. When the spread is negative, the same growth makes EVA more negative — the business is buying more of something that loses money. This is the sharpest practical use of the measure: it separates growth that helps from growth that hurts, and the two look identical on a revenue chart.

Do not read one year alone. EVA punishes the year in which capital is committed and rewards the years in which it pays off, so a company midway through a major investment programme will show a poor EVA for reasons that are entirely healthy. That is the standard objection to using EVA in a bonus scheme, and it is why practitioners look at the trend in EVA — sometimes called EVA momentum — rather than the level.

Compare against the company's own history and its direct competitors, not across sectors. Capital intensity varies enormously, and a business that needs $3 of capital per dollar of sales cannot be compared with one that needs $0.30.

Watch for the capital base being understated. Operating leases, capitalised development spending and acquired goodwill all belong in invested capital. Leaving any of them out shrinks the charge and manufactures EVA that is not there.

EVA per $1,000 of invested capital, by ROIC and WACC

The zero diagonal is where ROIC equals WACC. Notice that a two-point error in WACC moves every cell by $20 per $1,000 of capital — on a $6.5bn base that is $130M of EVA, which is why the cost of capital deserves more care than the accounting adjustments.

Mistakes that manufacture or destroy EVA on paper

• Using the effective tax rate from the income statement. That rate already reflects the tax deduction on interest. Since WACC uses the after-tax cost of debt, applying it to EBIT as well counts the shield twice and overstates NOPAT.
• Leaving excess cash in invested capital. Cash held above operating needs is not employed in the business. Charging it rent penalises a conservative balance sheet and makes EVA look worse than the operations deserve.
• Omitting operating leases and capitalised development spending. Both are ways of using capital, and both belong in the base if you want comparability between a company that leases its estate and one that owns it.
• Using year-end capital when profit was earned across the year. Average invested capital is the right denominator; year-end figures penalise a company that invested in December.
• Treating one year's EVA as a verdict. Capital commitment precedes the returns it buys. Judge the trend, and set the horizon of any incentive scheme long enough to cover the investment cycle.
• Reaching for a round WACC. Eight percent because it sounds right is a guess dressed as a rate. Build it from observable inputs and state the assumptions.

EVA next to the other value measures

EVA is a single-period measure of value creation. The multi-period version is exactly a discounted cash flow: the present value of all future EVA plus the capital already invested equals the value of the firm, which is the market value added identity. That is why EVA and NPV never actually disagree — a project with a positive NPV produces positive EVA in present-value terms, even if its first year is negative.

Its closest relative is return on invested capital, which expresses the same information as a rate rather than a dollar amount. ROIC is better for comparing businesses of different sizes; EVA is better for measuring what a specific business did with a specific capital base, and for tying compensation to it. NOPAT is the input both share.

On the equity side, residual income is the same idea applied to net income and the cost of equity alone, and it is what makes the justified price-to-book ratio work: a company earning exactly its cost of equity generates zero residual income and is worth exactly its book value. Whichever version you use, the discipline is identical — charge for all the capital, then see what is left.

Key terms

Capital charge

Invested capital multiplied by WACC: the annual dollar return all capital providers require simply to be compensated for the risk they carry.

Market value added

The market value of the firm less the capital invested in it. In theory it equals the present value of all future EVA.

Residual income

The generic name for profit after a charge for capital. EVA is a specific proprietary implementation of it with a defined set of accounting adjustments.