26 U.S. Code § 877A - Tax responsibilities of expatriation
All property of a covered expatriate shall be treated as sold on the day before the expatriation date for its fair market value.
The amount which would (but for this paragraph) be includible in the gross income of any individual by reason of paragraph (1) shall be reduced (but not below zero) by $600,000.
If the taxpayer elects the application of this subsection with respect to any property treated as sold by reason of subsection (a), the time for payment of the additional tax attributable to such property shall be extended until the due date of the return for the taxable year in which such property is disposed of (or, in the case of property disposed of in a transaction in which gain is not recognized in whole or in part, until such other date as the Secretary may prescribe).
For purposes of paragraph (1), the additional tax attributable to any property is an amount which bears the same ratio to the additional tax imposed by this chapter for the taxable year solely by reason of subsection (a) as the gain taken into account under subsection (a) with respect to such property bears to the total gain taken into account under subsection (a) with respect to all property to which subsection (a) applies.
The due date for payment of tax may not be extended under this subsection later than the due date for the return of tax imposed by this chapter for the taxable year which includes the date of death of the expatriate (or, if earlier, the time that the security provided with respect to the property fails to meet the requirements of paragraph (4), unless the taxpayer corrects such failure within the time specified by the Secretary).
No election may be made under paragraph (1) with respect to any property unless adequate security is provided with respect to such property.
No election may be made under paragraph (1) unless the taxpayer makes an irrevocable waiver of any right under any treaty of the United States which would preclude assessment or collection of any tax imposed by reason of this section.
An election under paragraph (1) shall only apply to property described in the election and, once made, is irrevocable.
In the case of any eligible deferred compensation item, the payor shall deduct and withhold from any taxable payment to a covered expatriate with respect to such item a tax equal to 30 percent thereof.
For purposes of subparagraph (A), the term “taxable payment” means with respect to a covered expatriate any payment to the extent it would be includible in the gross income of the covered expatriate if such expatriate continued to be subject to tax as a citizen or resident of the United States. A deferred compensation item shall be taken into account as a payment under the preceding sentence when such item would be so includible.
Paragraphs (1) and (2) shall not apply to any deferred compensation item to the extent attributable to services performed outside the United States while the covered expatriate was not a citizen or resident of the United States.
Rules similar to the rules of subchapter B of chapter 3 shall apply for purposes of this subsection.
Any item subject to the withholding tax imposed under paragraph (1) shall be subject to tax under section 871.
For purposes of paragraph (1), the term “specified tax deferred account” means an individual retirement plan (as defined in section 7701(a)(37)) other than any arrangement described in subsection (k) or (p) of section 408, a qualified tuition program (as defined in section 529), a qualified ABLE program (as defined in section 529A), a Coverdell education savings account (as defined in section 530), a health savings account (as defined in section 223), and an Archer MSA (as defined in section 220).
For purposes of this subsection, the term “taxable portion” means, with respect to any distribution, that portion of the distribution which would be includible in the gross income of the covered expatriate if such expatriate continued to be subject to tax as a citizen or resident of the United States.
For purposes of this subsection, the term “nongrantor trust” means the portion of any trust that the individual is not considered the owner of under subpart E of part I of subchapter J. The determination under the preceding sentence shall be made immediately before the expatriation date.
The term “covered expatriate” means an expatriate who meets the requirements of subparagraph (A), (B), or (C) of section 877(a)(2).
In the case of any covered expatriate who is subject to tax as a citizen or resident of the United States for any period beginning after the expatriation date, such individual shall not be treated as a covered expatriate during such period for purposes of subsections (d)(1) and (f) and section 2801.
The term “long-term resident” has the meaning given to such term by section 877(e)(2).
The term “early distribution tax” means any increase in tax imposed under section 72(t), 220(e)(4), 223(f)(4), 409A(a)(1)(B), 529(c)(6), 529A(c)(3), or 530(d)(4).
Solely for purposes of determining any tax imposed by reason of subsection (a), property which was held by an individual on the date the individual first became a resident of the United States (within the meaning of section 7701(b)) shall be treated as having a basis on such date of not less than the fair market value of such property on such date. The preceding sentence shall not apply if the individual elects not to have such sentence apply. Such an election, once made, shall be irrevocable.
The Secretary shall prescribe such regulations as may be necessary or appropriate to carry out the purposes of this section.
 See References in Text note below.
For inflation adjustment of certain items in this section, see Revenue Procedures listed in a table under section 1 of this title.
Section 220(e), referred to in subsec. (g)(6), does not contain a par. (4).
2014—Subsec. (e)(2). Pub. L. 113–295, § 102(e)(2)(A), inserted “a qualified ABLE program (as defined in section 529A),” after “529),”.
Subsec. (g)(6). Pub. L. 113–295, § 102(e)(2)(B), inserted “529A(c)(3),” after “529(c)(6),”.
Amendment by Pub. L. 113–295 applicable to taxable years beginning after Dec. 31, 2014, see section 102(f)(1) of Pub. L. 113–295, set out as a note under section 552a of Title 5, Government Organization and Employees.