Will legislation that would temporarily suspend or reduce the federal excise tax on gasoline become law before Jan 1, 2027?

rationale:

A temporary suspension or reduction of the federal gasoline excise tax (18.4¢/gal) is highly unlikely to become law before January 1, 2027 (10%), and virtually impossible before July 1, 2026 (1%).

Despite a flurry of proposals in the 119th Congress—including S.4032, S.4485, H.R.7919, and H.R.8572 congress.govcongress.govcongress.govcongress.govhawley.senate.govcongress.gov—the effort faces prohibitive structural and political hurdles. Historically, the base rate is zero: the federal gas tax has never been suspended since the creation of the Highway Trust Fund (HTF) in 1956 congress.govcongress.gov. Active proposals remain stalled at the introduction or referral stages, such as S.4032 in the Senate Finance Committee govtrack.us and H.R.8572 in House Ways and Means govtrack.us.

Congressional leadership remains deeply skeptical. Speaker Johnson has called the idea "intriguing" but noted unintended consequences, while Senate Majority Leader Thune and other transportation leaders have cited severe concerns about exacerbating the HTF's insolvency eenews.net. A suspension from June to October is estimated to cost ~$11.5B to $17B congress.govbudgetmodel.wharton.upenn.edu, generating intense resistance from fiscal conservatives against general-fund transfers.

Crucially, the political urgency driving the push has evaporated. The initial catalyst was a gas price spike linked to the US-Israel-Iran conflict. Following the mid-June ceasefire agreement, oil and gasoline prices have dropped significantly—for instance, AAA reported the national average for regular gas fell from ~$4.515 in mid-May to ~$3.999 by mid-June gasprices.aaa.comeia.gov. Consequently, legislative momentum has sputtered, and former President Trump's early endorsement shifted to a more noncommittal stance by late May ms.now.

Before July 1, 2026 (1%): Passage by this date is effectively impossible. Beyond the lack of committee advancement, the congressional calendar is extremely restrictive. The House is only in session June 22–26 before breaking majorityleader.gov, and the Senate begins a state work period on June 29 senate.gov. There are no scheduled floor votes and insufficient legislative time for both chambers to pass a bill and secure the President's signature.

Before Jan 1, 2027 (10%): While slightly more plausible, enactment before the end of the year still faces steep odds. The 10% probability reflects the residual tail risk of an election-year populist push: if gas prices unexpectedly spike again before the midterms, it could renew Trump's demands for action. In that scenario, there is a narrow path where a short-term tax holiday with a general-fund backfill is attached to a must-pass legislative vehicle. However, absent a severe and sustained price shock, the structural fiscal objections and historical precedent strongly indicate no action will be taken.