EP = (ROIC - WACC) * Invested Capital, where ROIC = NOPAT / Invested Capital, NOPAT = EBIT * (1 - tax rate), and WACC = market-value-weighted blend of CAPM cost of equity (rf + beta*ERP) and after-tax cost of debt
Economic profit is what is left after capital is charged for what it costs.
▶ Watch: Economic Profit explained in 24 seconds
What it is
Economic Profit (EP) is a value-based management measure popularised by McKinsey. It compares the return a business earns on its invested capital (ROIC) with the cost of that capital (WACC), then multiplies the difference by the amount of capital actually invested. The output is a dollar figure rather than a percentage, so it captures both the size of the spread and the size of the business generating it. A company can post a large accounting profit and still show negative economic profit if its returns fall short of what debt and equity investors require. The idea reframes profit as what is left over after paying for capital, not just after paying operating costs.
Why it matters
Accounting net income charges you for interest on debt but never charges you for the equity capital shareholders put in, so profitable-looking firms can still be destroying value. EP closes that gap by pricing every dollar of capital, which makes it useful for comparing capital-hungry businesses against asset-light ones and for judging whether growth is worth funding. A positive spread means the business is earning back more than its capital costs; a persistently negative spread is a research question worth investigating. A pitfall is that EP is only as good as its assumptions: WACC rests on a CAPMcost of equity where the equity risk premium and beta are estimates rather than facts, and when invested capital is zero or negative the ROIC ratio is meaningless, so asset-light and negative-IC firms produce nonsense unless the metric is gated off. Treat EP as a research signal about capital efficiency, not a verdict on a company.
How it's calculated
Start with NOPAT, net operating profit after tax, computed as EBIT multiplied by (1 minus the tax rate), which strips out financing effects so the operating return stands alone. Divide NOPAT by invested capital to get ROIC. Separately build WACC by blending a CAPM cost of equity (the risk-free rate plus beta times the equity risk premium) with the after-tax cost of debt, weighting each by market values. Subtract WACC from ROIC to get the spread, then multiply that spread by invested capital to express the result in dollars. If invested capital is zero or negative, the ROIC ratio breaks down and no meaningful spread can be reported.
How Quintarthai uses it
On the Quintarthai deep-analysis page (/app/, any ticker), the risk block shows the Economic-Profit spread (ROIC - WACC) with every assumption disclosed, alongside Altman Z, Ohlson O-Score, Merton distance-to-default and the CHS 12-month failure hazard. Each figure is n/m-gated for banks and insurers and for missing inputs, and is presented as an educational research signal with its methodology and caveats, never as advice.
Cross-border note. The EP framework is arithmetic rather than a statistically calibrated model, so it is not tied to any one country and applies equally to TSX and US-listed names. The practical limit is input availability: beta, market-value capital weights, and a defensible equity risk premium are harder to pin down for thinly traded Canadian small caps, and the risk-free rate should match the currency of the cash flows (Canada versus US) rather than being borrowed across the border.
FAQ
How is economic profit different from net income?
Net income deducts interest paid to lenders but never charges anything for the equity shareholders contributed, so it treats equity as if it were free. Economic profit charges for both by subtracting the full weighted average cost of capital. That is why a company can report positive net income and negative economic profit in the same year.
Why does economic profit sometimes show as not meaningful?
EP depends on dividing NOPAT by invested capital. When invested capital is zero or negative, which is common in asset-light businesses or firms with large accumulated buybacks, the ROIC ratio is mathematically meaningless and the spread cannot be interpreted. Banks and insurers are a separate case, since their balance sheets do not fit the operating-capital framing at all, so those cases are marked n/m rather than shown.
Check your understanding
A company reports positive net income for the year, but its economic profit is negative. What does that most directly tell you?
Negative EP means the ROIC minus WACC spread is negative: the business earned an operating return lower than what its debt and equity investors collectively require. Net income can still be positive because it charges for interest on debt but never charges for the cost of equity capital, while EP charges for both.