The changes start at points from June 16, 2025 to a year after enactment
What the document says“Except as provided in paragraphs (2), (3), (4), and (5), the amendments made by this section shall apply to taxable years beginning after the date of enactment of this Act.”
The section applies its amendments to taxable years beginning after enactment, except that the domestic content rules apply on or after June 16, 2025, the removal of the energy credit for certain property applies to property whose construction begins on or after that date, the fuel cell rules apply to property whose construction begins after December 31, 2025, and the wind and solar termination applies to facilities whose construction begins more than 12 months after enactment.
What the document actually says“Except as provided in paragraphs (2), (3), (4), and (5), the amendments made by this section shall apply to taxable years beginning after the date of enactment of this Act.”
The changes start with tax years that begin after this law passed. Four parts are treated apart.
Two of them run from June 16, 2025. One reaches work begun after 2025. The wind and solar end date reaches work begun a year after this law.
No action is recorded against this proposal. That is not evidence that none has been taken, and nobody has yet read it against the record. See what the tracker does not yet cover.