(a) General applicability date. Sections 53.4960-0 through 53.4960-4 apply to taxable years beginning after December 31, 2021. Taxpayers may choose to apply §§ 53.4960-0 through 53.4960-4 to taxable years beginning after December 31, 2017, and on or before December 31, 2021, provided the taxpayer applies §§ 53.4960-0 through 53.4960-4 in their entirety and in a consistent manner.
(b) [Reserved]
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