If 50 percent or more in value of the stock of a corporation is owned, directly or indirectly, by or for any person, such person shall be considered as owning the stock owned directly or indirectly by or for such corporation in that proportion which the value of the stock which such person so owns bears to the value of all stock in the corporation.
For purposes of determining whether a shareholder of a passive foreign investment company is treated as owning stock owned directly or indirectly by or for such company, subparagraph (A) shall be applied without regard to the 50-percent limitation contained therein. Section 1297(d) shall not apply in determining whether a corporation is a passive foreign investment company for purposes of this subparagraph.
To the extent provided in regulations, if any person has an option to acquire stock, such stock shall be considered as owned by such person. For purposes of this paragraph, an option to acquire such an option, and each one of a series of such options, shall be considered as an option to acquire such stock.
Stock held by a taxpayer shall be treated as stock in a passive foreign investment company if, at any time during the holding period of the taxpayer with respect to such stock, such corporation (or any predecessor) was a passive foreign investment company which was not a qualified electing fund. The preceding sentence shall not apply if the taxpayer elects to recognize gain (as of the last day of the last taxable year for which the company was a passive foreign investment company (determined without regard to the preceding sentence)) under rules similar to the rules of section 1291(d)(2).
Rules similar to the rules of section 959(b) shall apply to any amount described in subparagraph (A) and to any amount included in gross income under section 1293(a) (or which would have been so included but for section 951(c)) in respect of stock which the taxpayer is treated as owning under subsection (a).
The adjusted basis of the total assets of a controlled foreign corporation shall be increased by the research or experimental expenditures (within the meaning of section 174) paid or incurred by such foreign corporation during the taxable year and the preceding 2 taxable years. Any expenditure otherwise taken into account under the preceding sentence shall be reduced by the amount of any reimbursement received by the controlled foreign corporation with respect to such expenditure.
In the case of any intangible property (as defined in section 367(d)(4)) with respect to which a controlled foreign corporation is a licensee and which is used by such foreign corporation in the active conduct of a trade or business, the adjusted basis of the total assets of such foreign corporation shall be increased by an amount equal to 300 percent of the payments made during the taxable year by such foreign corporation for the use of such intangible property.
For purposes of this subsection, the term “controlled foreign corporation” has the meaning given such term by section 957(a).
The Secretary shall prescribe such regulations as may be necessary or appropriate to carry out the purposes of this part.