tier 1 railroad retirement benefit
(4) Tier 1 railroad retirement benefit For purposes of paragraph (1), the term “tier 1 railroad retirement benefit” means— (A) the amount of the annuity under the Railroad Retirement Act of 1974 equal to the amount of the benefit to which the taxpayer would have been entitled under the Social Security Act if all of the service after December 31, 1936 , of the employee (on whose employment record the annuity is being paid) had been included in the term “employment” as defined in the Social Security Act, and (B) a monthly annuity amount under section 3(f)(3) of the Railroad Retirement Act of 1974.
Source
26 USC § 86(d)(4)
Scoping language
None identified, default scope is assumed to be the parent (part II) of this section.