# 1.1411-9 Exception for self-employment income.
(a) *General rule.* Except as provided in paragraph (b) of this section, net investment income does not include any item taken into account in determining self-employment income that is subject to tax under section 1401(b) for such taxable year. For purposes of section 1411(c)(6) and this section, *taken into account* means income included and deductions allowed in determining net earnings from self-employment. However, amounts excepted in determining net earnings from self-employment under section 1402(a)(1)-(17), and thus excluded from self-employment income under section 1402(b), are not taken into account in determining self-employment income and thus may be included in net investment income if such amounts are described in § 1.1411-4. Except as provided in paragraph (b) of this section, if net earnings from self-employment consist of income or loss from more than one trade or business, all items taken into account in determining the net earnings from self-employment with respect to these trades or businesses (see § 1.1402(a)-2(c)) are considered taken into account in determining the amount of self-employment income that is subject to tax under section 1401(b) and therefore not included in net investment income.
(b) *Special rule for traders.* In the case of gross income described in §§ 1.1411-4(a)(1)(ii) and (a)(1)(iii) derived from a trade or business of trading in financial instruments or commodities (as described in § 1.1411-5(a)(2)), the deductions described in § 1.1411-4(f)(2)(ii) properly allocable to the taxpayer's trade or business of trading in financial instruments or commodities are taken into account in determining the taxpayer's self-employment income only to the extent that such deductions reduce the taxpayer's net earnings from self-employment (after aggregating under § 1.1402(a)-2(c) the net earnings from self-employment from any trade or business carried on by the taxpayer as an individual or as a member of a partnership). Any deductions described in § 1.1411-4(f)(2)(ii) that exceed the amount of net earnings from self-employment, in the aggregate (if applicable), are allowed in determining the taxpayer's net investment income under section 1411 and the regulations thereunder.
(c) *Examples.* The following examples illustrate the provisions of this section. For purposes of these examples, assume the taxpayer is a United States citizen, uses a calendar taxable year, and Year 1 and all subsequent years are taxable years in which section 1411 is in effect:
(d) *Effective/applicability date.* This section applies to taxable years beginning after December 31, 2013. However, taxpayers may apply this section to taxable years beginning after December 31, 2012, in accordance with § 1.1411-1(f).
[T.D. 9644, 78 FR 72424, Dec. 2, 2013]