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Economic value added or economic profit is the difference between revenues and costs,where costs include not only expenses, but also cost of capital.

Economic Profit
Net Operating Profit after Taxes (NOPAT)
Cash Operating Taxes
Invested Capital
Cost of Capital
Economic Spread Ratio
Economic Profit Margin

Intuitive Surgical Inc., economic profit calculation

US$ in thousands

	12 months ended	Dec 31, 2018	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014
	Net operating profit after taxes (NOPAT)¹
	Cost of capital²
	Invested capital³

	Economic profit⁴

Based on: 10-K (filing date: 2019-02-04), 10-K (filing date: 2018-02-02), 10-K (filing date: 2017-02-06), 10-K (filing date: 2016-02-02), 10-K (filing date: 2015-02-06).

¹ NOPAT. See details »

² Cost of capital. See details »

³ Invested capital. See details »

<>⁴ 2018 Calculation
Economic profit = NOPAT – Cost of capital × Invested capital
= hidden

–

×

=

Item	Description	The company
Economic profit	Economic profit is a measure of corporate performance computed by taking the spread between the return on invested capital and the cost of capital, and multiplying by the invested capital.	Intuitive Surgical Inc.’s economic profit increased from 2016 to 2017 and from 2017 to 2018.

Intuitive Surgical Inc., NOPAT calculation

US$ in thousands

	12 months ended	Dec 31, 2018	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014
	Net income attributable to Intuitive Surgical, Inc.
	Deferred income tax expense (benefit)¹
	Increase (decrease) in allowance for doubtful accounts and sales returns²
	Increase (decrease) in deferred revenue³
	Increase (decrease) in equity equivalents⁴
	Interest expense
	Interest expense, operating lease liability⁵
	Adjusted interest expense
	Tax benefit of interest expense⁶
	Adjusted interest expense, after taxes⁷
	(Gain) loss on marketable securities
	Investment income, before taxes
	Tax expense (benefit) of investment income⁸
	Investment income, after taxes⁹
	Net income (loss) attributable to noncontrolling interest
	Net operating profit after taxes (NOPAT)

Based on: 10-K (filing date: 2019-02-04), 10-K (filing date: 2018-02-02), 10-K (filing date: 2017-02-06), 10-K (filing date: 2016-02-02), 10-K (filing date: 2015-02-06).

¹ Elimination of deferred tax expense. See details »

² Addition of increase (decrease) in allowance for doubtful accounts and sales returns.

³ Addition of increase (decrease) in deferred revenue.

⁴ Addition of increase (decrease) in equity equivalents to net income attributable to Intuitive Surgical, Inc..

⁵ 2018 Calculation
Interest expense on capitalized operating leases = Operating lease liability × Discount rate
= hidden × hidden = hidden

⁶ 2018 Calculation
Tax benefit of interest expense = Adjusted interest expense × Statutory income tax rate
= hidden × 21.00% = hidden

⁷ Addition of after taxes interest expense to net income attributable to Intuitive Surgical, Inc..

⁸ 2018 Calculation
Tax expense (benefit) of investment income = Investment income, before tax × Statutory income tax rate
= hidden × 21.00% = hidden

⁹ Elimination of after taxes investment income.

Item	Description	The company
NOPAT	Net operating profit after taxes is income from operations, but after removement of taxes calculated on cash basis that are relevant to operating income.	Intuitive Surgical Inc.’s NOPAT declined from 2016 to 2017 but then increased from 2017 to 2018 exceeding 2016 level.

Intuitive Surgical Inc., cash operating taxes calculation

US$ in thousands

	12 months ended	Dec 31, 2018	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014
	Income tax expense
	Less: Deferred income tax expense (benefit)
	Add: Tax savings from interest expense
	Less: Tax imposed on investment income
	Cash operating taxes

Based on: 10-K (filing date: 2019-02-04), 10-K (filing date: 2018-02-02), 10-K (filing date: 2017-02-06), 10-K (filing date: 2016-02-02), 10-K (filing date: 2015-02-06).

Item	Description	The company
Cash operating taxes	Cash operating taxes are estimated by adjusting income tax expense for changes in deferred taxes and tax benefit from the interest deduction.	Intuitive Surgical Inc.’s cash operating taxes increased from 2016 to 2017 but then declined significantly from 2017 to 2018.

Intuitive Surgical Inc., invested capital calculation (financing approach)

US$ in thousands

		Dec 31, 2018	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014
	Operating lease liability¹
	Total reported debt & leases
	Total Intuitive Surgical, Inc. stockholders’ equity
	Net deferred tax (assets) liabilities²
	Allowance for doubtful accounts and sales returns³
	Deferred revenue⁴
	Equity equivalents⁵
	Accumulated other comprehensive (income) loss, net of tax⁶
	Noncontrolling interest in joint venture
	Adjusted total Intuitive Surgical, Inc. stockholders’ equity
	Construction-in-process⁷
	Available-for-sale marketable securities⁸
	Invested capital

Based on: 10-K (filing date: 2019-02-04), 10-K (filing date: 2018-02-02), 10-K (filing date: 2017-02-06), 10-K (filing date: 2016-02-02), 10-K (filing date: 2015-02-06).

¹ Addition of capitalized operating leases.

² Elimination of deferred taxes from assets and liabilities. See details »

³ Addition of allowance for doubtful accounts receivable.

⁴ Addition of deferred revenue.

⁵ Addition of equity equivalents to total Intuitive Surgical, Inc. stockholders’ equity.

⁶ Removal of accumulated other comprehensive income.

⁷ Subtraction of construction-in-process.

⁸ Subtraction of available-for-sale marketable securities.

Item	Description	The company
Invested capital	Capital is an approximation of the economic book value of all cash invested in going-concern business activities.	Intuitive Surgical Inc.’s invested capital declined from 2016 to 2017 but then increased from 2017 to 2018 exceeding 2016 level.

Intuitive Surgical Inc., cost of capital calculations

	Weights			Cost of capital
Equity²		÷	=		×		=
Operating lease liability³		÷	=		×	× (1 – 21.00%)	=
Total capital:	Total weights:			Cost of total capital:

Based on: 10-K (filing date: 2019-02-04).

¹ US$ in thousands

² Equity. See details »

³ Operating lease liability. See details »

	Weights			Cost of capital
Equity²		÷	=		×		=
Operating lease liability³		÷	=		×	× (1 – 35.00%)	=
Total capital:	Total weights:			Cost of total capital:

Based on: 10-K (filing date: 2018-02-02).

¹ US$ in thousands

² Equity. See details »

³ Operating lease liability. See details »

	Weights			Cost of capital
Equity²		÷	=		×		=
Operating lease liability³		÷	=		×	× (1 – 35.00%)	=
Total capital:	Total weights:			Cost of total capital:

Based on: 10-K (filing date: 2017-02-06).

¹ US$ in thousands

² Equity. See details »

³ Operating lease liability. See details »

	Weights			Cost of capital
Equity²		÷	=		×		=
Operating lease liability³		÷	=		×	× (1 – 35.00%)	=
Total capital:	Total weights:			Cost of total capital:

Based on: 10-K (filing date: 2016-02-02).

¹ US$ in thousands

² Equity. See details »

³ Operating lease liability. See details »

	Weights			Cost of capital
Equity²		÷	=		×		=
Operating lease liability³		÷	=		×	× (1 – 35.00%)	=
Total capital:	Total weights:			Cost of total capital:

Based on: 10-K (filing date: 2015-02-06).

¹ US$ in thousands

² Equity. See details »

³ Operating lease liability. See details »

Intuitive Surgical Inc., economic spread ratio calculation

		Dec 31, 2018	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014
	Selected Financial Data (US$ in thousands)
	Economic profit¹
	Invested capital²
	Performance Ratio
	Economic spread ratio³

Based on: 10-K (filing date: 2019-02-04), 10-K (filing date: 2018-02-02), 10-K (filing date: 2017-02-06), 10-K (filing date: 2016-02-02), 10-K (filing date: 2015-02-06).

¹ Economic profit. See details »

² Invested capital. See details »

³ 2018 Calculation
Economic spread ratio = 100 × Economic profit ÷ Invested capital
= 100 × hidden ÷ hidden = hidden

Performance ratio	Description	The company
Economic spread ratio	The ratio of economic profit to invested capital, also equal to the difference between return on invested capital (ROIC) and cost of capital.	Intuitive Surgical Inc.’s economic spread ratio improved from 2016 to 2017 and from 2017 to 2018.

Intuitive Surgical Inc., economic profit margin calculation

		Dec 31, 2018	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014
	Selected Financial Data (US$ in thousands)
	Economic profit¹
	Revenue
	Add: Increase (decrease) in deferred revenue
	Adjusted revenue
	Performance Ratio
	Economic profit margin²

Based on: 10-K (filing date: 2019-02-04), 10-K (filing date: 2018-02-02), 10-K (filing date: 2017-02-06), 10-K (filing date: 2016-02-02), 10-K (filing date: 2015-02-06).

¹ Economic profit. See details »

² 2018 Calculation
Economic profit margin = 100 × Economic profit ÷ Adjusted revenue
= 100 × hidden ÷ hidden = hidden

Performance ratio	Description	The company
Economic profit margin	The ratio of economic profit to sales. It is the company’s profit margin covering income efficiency and asset management. Economic profit margin is not biased in favor of capital-intensive business models, because any added capital is a cost to the economic profit margin.	Intuitive Surgical Inc.’s economic profit margin deteriorated from 2016 to 2017 but then improved from 2017 to 2018 exceeding 2016 level.

	Intuitive Surgical Inc.	Other companies (not purchased previously)
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Financial Statements
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Intuitive Surgical Inc. (ISRG)

Economic Value Added (EVA)

Economic Profit

Net Operating Profit after Taxes (NOPAT)

Cash Operating Taxes

Invested Capital

Cost of Capital

Dec 31, 2018

Dec 31, 2017

Dec 31, 2016

Dec 31, 2015

Dec 31, 2014

Economic Spread Ratio

Economic Profit Margin