26 U.S.C. § 3111 (INTERNAL REVENUE CODE)
§ 3111. Rate of tax
(a) Old-age, survivors, and disability insurance
In addition to other taxes, there is hereby imposed on every employer an excise tax, with respect to having individuals in his employ, equal to 6.2 percent of the wages (as defined in section 3121(a)) paid by the employer with respect to employment (as defined in section 3121(b)).
(b) Hospital insurance
In addition to the tax imposed by the preceding subsection, there is hereby imposed on every employer an excise tax, with respect to having individuals in his employ, equal to 1.45 percent of the wages (as defined in section 3121(a)) paid by the employer with respect to employment (as defined in section 3121(b)).
(c) Relief from taxes in cases covered by certain international agreements
During any period in which there is in effect an agreement entered into pursuant to section 233 of the Social Security Act with any foreign country, wages received by or paid to an individual shall be exempt from the taxes imposed by this section to the extent that such wages are subject under such agreement exclusively to the laws applicable to the social security system of such foreign country.
[(d) Repealed. Pub. L. 115–141, div. U, title IV, § 401(b)(34), Mar. 23, 2018, 132 Stat. 1204]
(e) Credit for employment of qualified veterans
(1) In general
If a qualified tax-exempt organization hires a qualified veteran with respect to whom a credit would be allowable under section 38 by reason of section 51 if the organization were not a qualified tax-exempt organization, then there shall be allowed as a credit against the tax imposed by subsection (a) on wages paid with respect to employment of all employees of the organization during the applicable period an amount equal to the credit determined under section 51 (after application of the modifications under paragraph (3)) with respect to wages paid to such qualified veteran during such period.
(2) Overall limitation
The aggregate amount allowed as a credit under this subsection for all qualified veterans for any period with respect to which tax is imposed under subsection (a) shall not exceed the amount of the tax imposed by subsection (a) on wages paid with respect to employment of all employees of the organization during such period.
(3) Modifications
For purposes of paragraph (1), section 51 shall be applied—
(A) by substituting “26 percent” for “40 percent” in subsection (a) thereof,
(B) by substituting “16.25 percent” for “25 percent” in subsection (i)(3)(A) thereof, and
(C) by only taking into account wages paid to a qualified veteran for services in furtherance of the activities related to the purpose or function constituting the basis of the organization’s exemption under section 501.
(4) Applicable period
The term “applicable period” means, with respect to any qualified veteran, the 1-year period beginning with the day such qualified veteran begins work for the organization.
(5) Definitions
For purposes of this subsection—
(A) the term “qualified tax-exempt organization” means an employer that is an organization described in section 501(c) and exempt from taxation under section 501(a), and
(B) the term “qualified veteran” has the meaning given such term by section 51(d)(3).
(f) Credit for research expenditures of qualified small businesses
(1) In general
In the case of a taxpayer who has made an election under section 41(h) for a taxable year, there shall be allowed as a credit against the tax imposed by subsection (a) for the first calendar quarter which begins after the date on which the taxpayer files the return specified in section 41(h)(4)(A)(ii) an amount equal to the payroll tax credit portion determined under section 41(h)(2).
(2) Limitation
The credit allowed by paragraph (1) shall not exceed the tax imposed by subsection (a) for any calendar quarter on the wages paid with respect to the employment of all individuals in the employ of the employer.
(3) Carryover of unused credit
If the amount of the credit under paragraph (1) exceeds the limitation of paragraph (2) for any calendar quarter, such excess shall be carried to the succeeding calendar quarter and allowed as a credit under paragraph (1) for such quarter.
(4) Deduction allowed for credited amounts
The credit allowed under paragraph (1) shall not be taken into account for purposes of determining the amount of any deduction allowed under chapter 1 for taxes imposed under subsection (a).
(Aug. 16, 1954, ch. 736, 68A Stat. 416; Sept. 1, 1954, ch. 1206, title II, § 208(c), 68 Stat. 1094; Aug. 1, 1956. ch. 836, title II, § 202(c), 70 Stat. 845; Pub. L. 85–840, title IV, § 401(c), Aug. 28, 1958, 72 Stat. 1042; Pub. L. 87–64, title II, § 201(c), June 30, 1961, 75 Stat. 141; Pub. L. 89–97, title I, § 111(c)(6), title III, § 321(c), July 30, 1965, 79 Stat. 343, 396; Pub. L. 90–248, title I, § 109(a)(3), (b)(3), Jan. 2, 1968, 81 Stat. 836, 837; Pub. L. 92–5, title II, § 204(a)(2), Mar. 17, 1971, 85 Stat. 11; Pub. L. 92–336, title II, § 204(a)(3), (b)(3), July 1, 1972, 86 Stat. 421, 422; Pub. L. 92–603, title I, § 135(a)(3), (b)(3), Oct. 30, 1972, 86 Stat. 1363, 1364; Pub. L. 93–233, § 6(a)(2), (b)(3), Dec. 31, 1973, 87 Stat. 954, 955; Pub. L. 94–455, title XIX, § 1903(a)(1), Oct. 4, 1976, 90 Stat. 1806; Pub. L. 95–216, title I, § 101(a)(2), (b)(2), title III, §§ 315(b), 317(b)(2), Dec. 20, 1977, 91 Stat. 1511, 1512, 1537, 1540; Pub. L. 98–21, title I, § 123(a)(2), Apr. 20, 1983, 97 Stat. 88; Pub. L. 100–203, title IX, § 9006(b)(1), Dec. 22, 1987, 101 Stat. 1330–289; Pub. L. 100–647, title VIII, § 8016(a)(5), Nov. 10, 1988, 102 Stat. 3793; Pub. L. 108–203, title IV, § 415, Mar. 2, 2004, 118 Stat. 530; Pub. L. 111–147, title I, § 101(a), Mar. 18, 2010, 124 Stat. 72; Pub. L. 112–56, title II, § 261(e)(2), Nov. 21, 2011, 125 Stat. 730; Pub. L. 113–295, div. A, title II, § 221(a)(99)(B), Dec. 19, 2014, 128 Stat. 4051; Pub. L. 114–113, div. Q, title I, § 121(c)(2), Dec. 18, 2015, 129 Stat. 3051; Pub. L. 115–141, div. U, title IV, § 401(a)(208), (b)(34), Mar. 23, 2018, 132 Stat. 1194, 1204.)
heading: References in Text
text: Section 233 of the Social Security Act, referred to in subsec. (c), is classified to section 433 of Title 42, The Public Health and Welfare.
heading: Amendments
text: 2018—Subsec. (d). Pub. L. 115–141, § 401(b)(34), struck out subsec. (d) which provided for a special exemption for certain individuals hired in 2010.
Subsec. (e)(5)(B). Pub. L. 115–141, § 401(a)(208), substituted “has the meaning” for “has meaning”.
2015—Subsec. (f). Pub. L. 114–113 added subsec. (f).
2014—Subsec. (a). Pub. L. 113–295, § 221(a)(99)(B)(i), substituted “6.2 percent of the wages (as defined in section 3121(a)) paid by the employer with respect to employment (as defined in section 3121(b)).” for “the following percentages of the wages (as defined in section 3121(a)) paid by him with respect to employment (as defined in section 3121(b))—” and table of rates.
Subsec. (b). Pub. L. 113–295, § 221(a)(99)(B)(ii), substituted “1.45 percent of the wages (as defined in section 3121(a)) paid by the employer with respect to employment (as defined in section 3121(b)).” for “the following percentages of the wages (as defined in section 3121(a)) paid by him with respect to employment (as defined in section 3121(b))—
“(1) with respect to wages paid during the calendar years 1974 through 1977, the rate shall be 0.90 percent;
“(2) with respect to wages paid during the calendar year 1978, the rate shall be 1.00 percent;
“(3) with respect to wages paid during the calendar years 1979 and 1980, the rate shall be 1.05 percent;
“(4) with respect to wages paid during the calendar years 1981 through 1984, the rate shall be 1.30 percent;
“(5) with respect to wages paid during the calendar year 1985, the rate shall be 1.35 percent; and
“(6) with respect to wages paid after December 31, 1985, the rate shall be 1.45 percent.”
2011—Subsec. (e). Pub. L. 112–56 added subsec. (e).
2010—Subsec. (d). Pub. L. 111–147 added subsec. (d).
2004—Subsec. (c). Pub. L. 108–203 substituted “exclusively to the laws applicable to” for “to taxes or contributions for similar purposes under”.
1988—Subsecs. (a), (b). Pub. L. 100–647 made technical correction to directory language of Pub. L. 100–203, § 9006(b)(1), see 1987 Amendment note below.
1987—Subsecs. (a), (b). Pub. L. 100–203, as amended by Pub. L. 100–647, struck out “and (t)” after “3121(a)” in introductory provisions.
1983—Subsec. (a). Pub. L. 98–21 substituted table of rates for pars. (1) to (7) which had imposed a tax on every employer (1) with respect to wages paid during the calendar years 1974 through 1977 at the rate of 4.95 percent, (2) with respect to wages paid during the calendar year 1978 at the rate of 5.05 percent, (3) with respect to wages paid during the calendar years 1979 and 1980 at the rate of 5.08 percent, (4) with respect to wages paid during the calendar year 1981 at the rate of 5.35 percent, (5) with respect to wages paid during the calendar years 1982 through 1984 at the rate of 5.40 percent, (6) with respect to wages paid during the calendar years 1985 through 1989 at the rate of 5.70 percent, and (7) with respect to wages paid after Dec. 31, 1989, at the rate of 6.20 percent.
1977—Subsec. (a). Pub. L. 95–216, §§ 101(a)(2), 315(b), substituted “(as defined in section 3121(a) and (t))” for “(as defined in section 3121(a))” in provisions preceding par. (1), substituted “1974 through 1977” for “1974 through 2010” in par. (1), substituted “wages paid during the calendar year 1978, the rate shall be 5.05 percent” for “wages paid after December 31, 2010, the rate shall be 5.95 percent” in par. (2), and added pars. (3) to (7).
Subsec. (b). Pub. L. 95–216, §§ 101(b)(2), 315(b), substituted “(as defined in section 3121(a) and (t))” for “(as defined in section 3121(a))” in provisions preceding par. (1), substituted “wages paid during the calendar year 1978, the rate shall be 1.00 percent” for “wages paid during the calendar years 1978 through 1980, the rate shall be 1.10 percent”, in par. (2), substituted “wages paid during the calendar years 1979 and 1980, the rate shall be 1.05 percent” for wages paid during the calendar years 1981 through 1985, the rate shall be 1.35 percent” in par. (3), substituted “wages paid during the calendar years 1981 through 1984, the rate shall be 1.30 percent” for “wages paid after December 31, 1985, the rate shall be 1.50 percent” in par. (4), and added pars. (5) and (6).
Subsec. (c). Pub. L. 95–216, § 317(b)(2), added subsec. (c).
1976—Subsec. (a). Pub. L. 94–455, § 1903(a)(1)(A), redesignated pars. (5) and (6) as (1) and (2). Former pars. (1) to (4), which related to a tax rate of 3.8 percent with respect to wages received during the taxable year 1968, a tax rate of 4.2 percent with respect to wages received during the calendar year 1969 and 1970, a tax rate of 4.6 percent with respect to wages received during the calendar years 1971 and 1972, and a tax rate of 4.85 percent with respect to wages received during the calendar year 1973, respectively, were struck out.
Subsec. (b). Pub. L. 94–455, § 1903(a)(1)(B), redesignated pars. (3) to (6) as (1) to (4), respectively. Former pars. (1) and (2), which related to a tax rate of .60 percent with respect to wages received during the calendar years 1968, 1969, 1970, 1971, and 1972 and a tax rate of 1.0 percent with respect to wages received during the calendar year 1973, respectively, were struck out.
1973—Subsec. (a)(4). Pub. L. 93–233, § 6(a)(2), struck out provision for application of 4.85 percent rate of tax during calendar years 1974, 1975, 1976, and 1977.
Subsec. (a)(5). Pub. L. 93–233, § 6(a)(2), increased rate of tax from 4.80 percent to 4.95 percent and substituted calendar year “1974” to “1978” as initial year for application of such rate.
Subsec. (a)(6). Pub. L. 93–233, § 6(a)(2), increased rate of tax from 5.85 percent to 5.95 percent.
Subsec. (b)(2). Pub. L. 93–233, § 6(b)(3), struck out provision for application of 1.0 percent rate of tax during calendar years 1974, 1975, 1976, and 1977.
Subsec. (b)(3). Pub. L. 93–233, § 6(b)(3), incorporated former provision of par. (2) for taxation of wages received during calendar years 1974, 1975, 1976, and 1977, decreased the applicable rate of tax from 1.0 percent to 0.90 percent, and struck out provision for 1.25 percent rate of tax for calendar years 1978, 1979, and 1980.
Subsec. (b)(4). Pub. L. 93–233, § 6(b)(3), incorporated former provision of par. (3) for taxation of wages received during calendar years 1978, 1979, and 1980, decreased the applicable rate of tax from 1.25 percent to 1.10 percent, and struck out provision for 1.35 percent rate of tax for calendar years 1981, 1982, 1983, 1984, and 1985.
Subsec. (b)(5). Pub. L. 93–233, § 6(b)(3), incorporated former provision of par. (4) for taxation of wages received during calendar years 1981 through 1985 at applicable 1.35 percent rate of tax and struck out provision for 1.45 percent rate of tax for wages received after Dec. 31, 1985.
Subsec. (b)(6). Pub. L. 93–233, § 6(b)(3), incorporated former provision of par. (5) for taxation of wages received after Dec. 31, 1985 and increased the applicable rate of tax from 1.45 percent to 1.50 percent.
1972—Subsec. (a)(3). Pub. L. 92–603, § 135(a)(3)(A), substituted “the calendar years 1971 and 1972” for “any of the calendar years 1971 through 1977”.
Subsec. (a)(3) to (5). Pub. L. 92–336, § 204(a)(3), substituted “any of the calendar years 1971 through 1977” for “the calendar years 1971 and 1972” in par. (3), “any of the calendar years 1978 through 2010” for “the calendar years 1973, 1974, and 1975” and “4.5” for “5.0” in par. (4), and “December 31, 2010” for “December 31, 1975” and “5.35” for “5.15” in par. (5).
Subsec. (a)(4). Pub. L. 92–603, § 135(a)(3)(B), substituted “received during the calendar years 1973, 1974, 1975, 1976, and 1977, the rate shall be 4.85 percent;” for “received during any of the calendar years 1978 through 2010, the rate shall be 4.5 percent; and”.
Subsec. (a)(5). Pub. L. 92–603, § 135(a)(3)(B), substituted “received during the calendar years 1978 through 2010, the rate shall be 4.80 percent; and” for “received after December 31, 2010, the rate shall be 5.35 percent”.
Subsec. (a)(6). Pub. L. 92–603, § 135(a)(3)(B), added par. (6).
Subsec. (b)(2). Pub. L. 92–603, § 135(b)(3), increased rate to 1.0 percent from 0.9 percent.
Subsec. (b)(2) to (5). Pub. L. 92–336, § 204(b)(3), inserted references to 1976 and 1977 and substituted “0.9” for “0.65” in par. (2), substituted references for the calendar years 1978 through 1985 for references to the calendar years 1976 through 1979 and substituted “1.0” for “0.70” in par. (3), substituted references for the calendar years 1986 through 1992 for references to the calendars 1980 through 1986 and substituted “1.1” for “0.80” in par. (4), and substituted “1992” and “1986” and “1.2” for “0.9” in par. (5).
Subsec. (b)(3). Pub. L. 92–603, § 135(b)(3), substituted “and 1980, the rate shall be 1.25 percent” for “1980, 1981, 1982, 1983, 1984, and 1985, the rate shall be 1.0 percent”.
Subsec. (b)(4). Pub. L. 92–603, § 135(b)(3), substituted “1981, 1982, 1983, 1984, and 1985, the rate shall be 1.35 percent” for “1986, 1987, 1988, 1989, 1990, 1991, and 1992, the rate shall be 1.1 percent”.
Subsec. (b)(5). Pub. L. 92–603, § 135(b)(3), substituted “1985, the rate shall be 1.45 percent” for “1992, the rate shall be 1.2 percent”.
1971—Subsec. (a)(4). Pub. L. 92–5 substituted “with respect to wages paid during the calendar years 1973, 1974, and 1975, the rate shall be 5.0 percent; and” for “with respect to wages paid after December 31, 1972, the rate shall be 5.0 percent”.
Subsec. (a)(5). Pub. L. 92–5 added par. (5).
1968—Subsec. (a)(1) to (4). Pub. L. 90–248, § 109(a)(3), substituted “1968” and “3.8” for “1966” and “3.85” in par. (1) and “1969 and 1970” and “4.2” for “1967 and 1968” and “3.9” in par. (2), struck out reference to calendar years 1969 and 1970 from par. (3) and substituted therein “4.6” for “4.4”, and substituted “5.0” for “4.85” in par. (4).
Subsecs. (b)(1) to (5). Pub. L. 90–248, § 109(b)(3), struck out par. (1) provision for employer rate of 0.35 percent of wages paid with respect to employment during calendar year 1966, redesignated pars. (2) to (6) as (1) to (5), struck out reference to “1967” in such par. (1) and increased the rate by 0.10 percent to 0.60, 0.65, 0.70, 0.80, and 0.90 in pars. (1) to (5), respectively.
1965—Pub. L. 89–97, § 321(c), divided the total excise tax imposed under the entire section upon employers through a tax equal to percentages of wages paid by him into two separate taxes by dividing the section into subsecs. (a) and (b), with subsec. (a) reflecting the tax for old-age, survivors, and disability insurance, and subsec. (b) reflecting the tax for hospital insurance, but, in the case of subsec. (b), without regard to the provisions of section 3121(b)(9) insofar as it relates to employees; increased from 4⅛ percent to 4.20 percent the rate of total tax imposed by the entire section upon wages paid during calendar year 1966 (resulting from a tax of 3.85 percent under subsec. (a) and 0.35 percent under subsec. (b)), increased from 4⅛ percent to 4.40 percent the rate of total tax imposed by the entire section upon wages paid during calendar year 1967 (resulting from a tax of 3.9 percent under subsec. (a) and 0.50 percent under subsec. (b)), reduced from 4⅝ percent to 4.40 percent the rate of total tax imposed by the entire section upon wages paid during calendar year 1968 (resulting from a tax of 3.9 percent under subsec. (a) and 0.50 percent under subsec. (b)), increased from 4⅝ percent to 4.90 percent the rate of total tax imposed by the entire section upon wages paid during the calendar years 1969, 1970, 1971, and 1972 (resulting from a tax of 4.4 percent under subsec. (a) and 0.50 percent under subsec. (b)), increased from 4⅝ percent to 5.40 percent the rate for calendar years 1973, 1974, and 1975 (resulting from a tax of 4.85 percent under subsec. (a) and 0.55 percent under subsec. (b)), increased from 4⅝ percent to 5.45 percent the rate for calendar years 1976, 1977, 1978, and 1979 (resulting from a tax of 4.85 percent under subsec. (a) and 0.60 percent under subsec. (b)), increased from 4⅝ percent to 5.55 percent the rate for calendar years 1980 through 1986 (resulting from a tax of 4.85 percent under subsec. (a) and 0.70 percent under subsec. (b)), and increased the rate from 4⅝ percent to 5.65 percent for calendar years after December 31, 1986 (resulting from a tax of 4.85 percent under subsec. (a) and 0.80 percent under subsec. (b)).
Subsec. (b). Pub. L. 89–97, § 111(c)(6), struck out “, but without regard to the provisions of paragraph (9) thereof insofar as it relates to employees” after “as defined in section 3121(b)”.
1961—Pub. L. 87–64 increased rate of tax for calendar year 1962 from 3 to 3⅛ percent, calendar years 1963 to 1965, inclusive, from 3½ to 3⅝ percent, calendar years 1966 and 1967 from 4 to 4⅛ percent, calendar year 1968 from 4 to 4⅝ percent, and for calendar years after December 31, 1968, from 4½ to 4⅝ percent.
1958—Pub. L. 85–840 increased rate of tax by substituting provisions imposing a tax of 2½ percent for calendar year 1959, 3 percent for calendar years 1960–62, 3½ percent for calendar years 1963–65, 4 percent for calendar years 1966–68, and 4½ percent for calendar years beginning after Dec. 31, 1968, for provisions which imposed a tax of 2¼ percent for calendar years 1957–59, 2¾ percent for calendar years 1960–64, 3¼ percent for calendar years 1965–69, 3¾ percent for calendar years 1970–74, and 4¼ percent for calendar years beginning after Dec. 31, 1974.
1956—Act Aug. 1, 1956, increased rate of tax with respect to wages paid during calendar years 1957 to 1959, and for all calendar years thereafter, by one-quarter percent.
1954—Act Sept. 1, 1954, increased 3¼ percent rate of tax for calendar year 1970 and subsequent years to 3½ percent for calendar years 1970 to 1974 and 4 percent for 1975 and subsequent years.
heading: Effective Date of 2015 Amendment
text: Amendment by Pub. L. 114–113 applicable to taxable years beginning after Dec. 31, 2015, see section 121(d)(3) of Pub. L. 114–113, set out as a note under section 38 of this title.
heading: Effective Date of 2014 Amendment
text: Amendment by Pub. L. 113–295 effective Dec. 19, 2014, subject to a savings provision, see section 221(b) of Pub. L. 113–295, set out as a note under section 1 of this title.
heading: Effective Date of 2011 Amendment
text: Amendment by Pub. L. 112–56 applicable to individuals who begin work for the employer after Nov. 21, 2011, see section 261(g) of Pub. L. 112–56, set out as a note under section 51 of this title.
heading: Effective Date of 2010 Amendment
text: Amendment by Pub. L. 111–147 applicable to wages paid after Mar. 18, 2010, see section 101(e) of Pub. L. 111–147, set out as a note under section 51 of this title.
heading: Effective Date of 1988 Amendment
text: Pub. L. 100–647, title VIII, § 8016(b), Nov. 10, 1988, 102 Stat. 3793, provided that:
“(1) Except as provided in paragraph (2), the amendments made by this section [amending this section, sections 3121 and 3306 of this title, and sections 405, 410, and 411 of Title 42, The Public Health and Welfare] shall be effective on the date of the enactment of this Act [Nov. 10, 1988].
“(2) Any amendment made by this section to a provision of a particular Public Law which is referred to by its number, or to a provision of the Social Security Act [42 U.S.C. 301 et seq.] or the Internal Revenue Code of 1986 as added or amended by a provision of a particular Public Law which is so referred to, shall be effective as though it had been included or reflected in the relevant provisions of that Public Law at the time of its enactment.”
heading: Effective Date of 1987 Amendment
text: Pub. L. 100–203, title IX, § 9006(c), Dec. 22, 1987, 101 Stat. 1330–289, provided that: “The amendments made by this section [amending this section and section 3121 of this title] shall apply with respect to tips received (and wages paid) on and after January 1, 1988.”
heading: Effective Date of 1983 Amendment
text: Amendment by Pub. L. 98–21 applicable to remuneration paid after Dec. 31, 1983, see section 123(a)(3) of Pub. L. 98–21, set out as a note under section 3101 of this title.
heading: Effective Date of 1977 Amendment
text: Amendment by section 101(a)(2), (b)(2) of Pub. L. 95–216 applicable with respect to remuneration paid or received, and taxable years beginning, after 1977, see section 104 of Pub. L. 95–216, set out as a note under section 1401 of this title.
Pub. L. 95–216, title III, § 315(c), Dec. 20, 1977, 91 Stat. 1537, provided that: “The amendments made by this section [amending this section and section 3121 of this title] shall apply with respect to wages paid with respect to employment performed in months after December 1977.”
heading: Effective Date of 1976 Amendment
text: Amendment by Pub. L. 94–455 applicable with respect to wages paid after Dec. 31, 1976, see section 1903(d) of Pub. L. 94–455, set out as a note under section 3101 of this title.
heading: Effective Date of 1973 Amendment
text: Amendment by Pub. L. 93–233 applicable only with respect to remuneration paid after December 31, 1973, see section 6(c) of Pub. L. 93–233, set out as a note under section 1401 of this title.
heading: Effective Date of 1972 Amendments
text: Amendment by Pub. L. 92–603 applicable only with respect to remuneration paid after Dec. 31, 1972, see section 135(c) of Pub. L. 92–603, set out as a note under section 1401 of this title.
Amendment by Pub. L. 92–336 applicable only with respect to remuneration paid after December 31, 1972, see section 204(c) of Pub. L. 92–336, set out as a note under section 1401 of this title.
heading: Effective Date of 1971 Amendment
text: Amendment by Pub. L. 92–5 applicable only with respect to remuneration paid after Dec. 31, 1971, see section 204(b) of Pub. L. 92–5, set out as a note under section 3101 of this title.
heading: Effective Date of 1968 Amendment
text: Amendment by Pub. L. 90–248 applicable only with respect to remuneration paid after Dec. 31, 1967, see section 109(c) of Pub. L. 90–248, set out as a note under section 1401 of this title.
heading: Effective Date of 1965 Amendment
text: Amendment by section 111(c)(6) of Pub. L. 89–97 applicable to calendar year 1966 or to any subsequent calendar year but only if by October 1 immediately preceding such calendar year the Railroad Retirement Tax Act (section 3201 et seq. of this title) provides for a maximum amount of monthly compensation taxable under such Act during all months of such calendar year equal to one-twelfth of maximum wages which Federal Insurance Contributions Act (section 3101 et seq. of this title) provides may be counted for such calendar year, see section 111(e) of Pub. L. 89–97, set out as an Effective Date note under section 1395i–1 of Title 42, The Public Health and Welfare.
Amendment by section 321(c) of Pub. L. 89–97 applicable with respect to remuneration paid after December 31, 1965, see section 321(d) of Pub. L. 89–97, set out as a note under section 1401 of this title.
heading: Effective Date of 1961 Amendment
text: Amendment by Pub. L. 87–64 applicable with respect to remuneration paid after Dec. 31, 1961, see section 201(d) of Pub. L. 87–64, set out as a note under section 1401 of this title.
heading: Effective Date of 1958 Amendment
text: Amendment by Pub. L. 85–840 applicable with respect to remuneration paid after Dec. 31, 1958, see section 401(d) of Pub. L. 85–840, set out as a note under section 1401 of this title.
heading: Effective Date of 1956 Amendment
text: Amendment by act Aug. 1, 1956, applicable with respect to remuneration paid after Dec. 31, 1956, see section 202(d) of such act Aug. 1, 1956, set out as a note under section 1401 of this title.
heading: Savings Provision
text: For provisions that nothing in amendment by section 401(b)(34) of Pub. L. 115–141 be construed to affect treatment of certain transactions occurring, property acquired, or items of income, loss, deduction, or credit taken into account prior to Mar. 23, 2018, for purposes of determining liability for tax for periods ending after Mar. 23, 2018, see section 401(e) of Pub. L. 115–141, set out as a note under section 23 of this title.
heading: Penalties and Interest Not Assessed for Failure To Make Timely Payment During Period January 1, 1982, to June 30, 1982, of Taxes Attributable to Amendments by Pub. L. 97–123
text: For provision that no penalties or interest shall be assessed on account of any failure to make timely payment of taxes imposed by this section with respect to payments made for the period Jan. 1, 1982, and ending June 30, 1982, to the extent that such taxes are attributable to section 3 of Pub. L. 97–123 or the amendments made by that section, see section 3(f) of Pub. L. 97–123, set out as a note under section 3101 of this title.