NOPAT Calculator (net operating profit after tax from EBIT or net income)

Understanding the NOPAT calculator — concept and principle

NOPAT (net operating profit after tax) is the profit a company's operations would earn if it had no debt. Analysts use it as the starting point for return on invested capital (ROIC), economic value added (EVA) and free cash flow to the firm, because it compares companies regardless of how they are financed.

Taxing operating profit as if there were no interest gives $9.0M, an 11.25% NOPAT margin on $80M of sales.

How it is calculated

From EBIT: NOPAT = EBIT × (1 − tax rate).
From net income: NOPAT = net income + (interest expense − non-operating income) × (1 − tax rate).
Taxes on operating profit = EBIT × tax rate.
Interest tax shield = interest expense × tax rate, the tax saved because interest is deductible; it is left out of NOPAT on purpose.
NOPAT margin = NOPAT ÷ revenue.

The principle

Net income mixes two things: how well the business operates and how it is financed. Interest reduces taxable profit, so a company with debt pays less tax than an identical company without debt. NOPAT removes that effect by taxing operating profit as if there were no interest. The value of the tax shield is usually counted elsewhere, for example in the after-tax cost of debt within WACC, so counting it in NOPAT as well would count it twice.

Worked example

Default inputs: start from EBIT 12,000,000 USD, tax 25%, net income 7,200,000 USD, interest 2,400,000 USD, non-operating income 0, revenue 80,000,000 USD.

Taxes on operating profit = 12,000,000 × 25% = 3,000,000 USD.
NOPAT = 12,000,000 × 0.75 = 9,000,000 USD.
Check from net income: 7,200,000 + 2,400,000 × 0.75 = 9,000,000 USD, the same.
Interest tax shield = 2,400,000 × 25% = 600,000 USD.
NOPAT margin = 9,000,000 ÷ 80,000,000 = 11.25%.

Each point is the calculator re-run with only “Operating profit (EBIT)” changed; the gold point is the default example. Change the inputs above and this chart follows your numbers.

Operating profit (EBIT)	NOPAT
3e+06	$2,250,000
6e+06	$4,500,000
9e+06	$6,750,000
1.2e+07	$9,000,000
1.5e+07	$11,250,000
1.8e+07	$13,500,000
2.4e+07	$18,000,000

How to read the result

A higher NOPAT margin means operations keep more of each sale after tax. NOPAT is most useful compared with the capital used to produce it: ROIC = NOPAT ÷ invested capital. If ROIC exceeds the cost of capital, the company creates value. Track NOPAT over several years to separate lasting performance from one-off items.

Common mistakes

Using net income directly, which mixes financing with operations.
Leaving one-off gains or non-operating income in operating profit.
Using the statutory tax rate when the company's effective operating tax rate is very different.
Double-counting the interest tax shield.

Keep in mind: Results depend on the profit and tax figures used and on adjustments analysts may make. This is an analytical tool, not investment advice.

Frequently asked questions

What is the difference between NOPAT and net income?

Net income is after interest; NOPAT is operating profit after tax as if the firm had no debt.

Which tax rate should I use?

Often the effective or marginal tax rate on operating profit; be consistent across companies.

Is NOPAT the same as free cash flow?

No. Free cash flow subtracts net investment in fixed assets and working capital from NOPAT plus depreciation.

Sources: Koller, Goedhart & Wessels (McKinsey), Valuation: Measuring and Managing the Value of Companies · Damodaran, A., Investment Valuation

Checked 9 Nov 2026. CFA Institute, “CFA Program Level II Financial Ratio List”: EBIT × (1 − effective tax rate) as the numerator of return on invested capital. Net-income route (adding back after-tax interest): standard formula.

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