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S. 4588
U.S. Senate•In Senate Committee
Summary
S. 4588, the Taxing Buybacks from Big Oil Windfalls Act, was introduced in the Senate on May 20, 2026 by Sen. Ron Wyden (D) with 16 co-sponsors. It was referred to Finance, and last saw action on May 20, 2026: Read twice and referred to the Committee on Finance.
Record
Text
S. 4588 has 16 co-sponsors.
sb4588/introduced-in-senate.txt119 S4588 IS: Taxing Buybacks from Big Oil Windfalls ActU.S. Senate2026-05-20text/xmlENPursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain.II 119th CONGRESS 2d Session S. 4588 IN THE SENATE OF THE UNITED STATES May 20, 2026 Mr. Wyden (for himself, Mr. Schumer , Mr. Bennet , Mr. Whitehouse , Mr. Welch , Mr. Kim , Mr. Blumenthal , Mr. Van Hollen , Mr. Reed , Mr. Booker , Ms. Hirono , Mr. Markey , Mr. Merkley , Mr. Schatz , and Ms. Smith ) introduced the following bill; which was read twice and referred to the Committee on Finance A BILLTo amend the Internal Revenue Code of 1986 to increase the excise tax for the repurchase of corporate stock by large oil and gas companies.1.Short titleThis Act may be cited as the Taxing Buybacks from Big Oil Windfalls Act .2.Increase in tax on repurchase of corporate stock by large oil and gas companiesSection 4501 of the Internal Revenue Code of 1986 is amended by redesignating subsection (f) as subsection (g) and by inserting after subsection (e) the following new subsection:(f)Application to large oil and gas companies(1)In generalIn the case of a covered corporation which is an applicable corporation for the taxable year, subsection (a) shall be applied by substituting 25 percent for 1 percent .(2)Applicable corporationFor purposes of this subsection—(A)In generalThe term applicable corporation means, with respect to any taxable year, any corporation if—(i)the average annual gross receipts of such corporation for the 3-taxable-year period ending with the taxable year which precedes such taxable year equals or exceeds $1,000,000,000, and(ii)such corporation is primarily engaged in 1 or more oil or natural gas trades or businesses during the taxable year.For purposes of clause (i), rules similar to the rules of paragraphs (2) and (3) of section 448(c) shall apply.(B)Oil or natural gas trade or businessThe term oil or natural gas trade or business means any trade or business that consists of one or more of the following:(i)The production of oil or natural gas.(ii)The refining of oil or natural gas.(iii)The processing of oil or natural gas.(iv)The transportation of oil or natural gas.(v)The distribution of oil or natural gas.(3)Application of subsection(A)In generalThis subsection shall apply to repurchases of stock made—(i)after the date of the enactment of this subsection, and(ii)before the first day of the first month beginning after the gasoline price requirement of subparagraph (B) is met.(B)Gasoline price requirementThe gasoline price requirement of this subparagraph is met if the weekly retail price of all formulations of regular gasoline (as determined by the Energy Information Administration of the Department of Energy) is less than $2.937 per gallon for each week occurring during any 5-consecutive week period ending after the date of the enactment of this subsection.(C)Special ruleFor purposes of applying subsection (c)(3) to any taxable year which includes a period to which this subsection applies and a period to which this subsection does not apply, the amount of the reduction determined under such subsection for such taxable year shall be applied—(i)by reducing stock repurchased during the period this subsection does not apply in the amount which bears the same ratio to the total amount of the reduction so determined for such taxable year as—(I)the number of days in the taxable year during such period, bears to(II)the total number of days in such taxable year, and(ii)by reducing stock repurchased during the period this subsection applies by the excess (if any) of the total amount of the reduction so determined for such taxable year over the amount of the reduction determined under clause (i)..
Tracker
The tracker indicates the progress of this legislation as it moves through the legislative process.
- Introduced2026-05-20
- Passed Senate
- Passed House
- Conference
- To President
- Became Law
A bill to amend the Internal Revenue Code of 1986 to increase the excise tax for the repurchase of corporate stock by large oil and gas companies.
Sponsors
Sen. Ron Wyden (D) sponsors S. 4588, and 16 members have co-sponsored it, 14 of them from the day it was introduced.

Sen. · D–OR · Sponsor
Introduced May 20, 2026

Sen. · D–CO · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–CT · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–NJ · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–HI · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–NJ · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–MA · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–OR · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–RI · Co-sponsor
Joined May 20, 2026 · Original

Sen. · D–HI · Co-sponsor
Joined May 20, 2026 · Original
Committees
S. 4588 went before 1 committee: Finance.
Actions
S. 4588 has taken 2 actions since May 20, 2026.
| Chamber | Action | |||
|---|---|---|---|---|
May 20, 2026 | Senate | Read twice and referred to the Committee on Finance.Finance Committee | ||
May 20, 2026 | — | Introduced in Senate |
Votes
S. 4588 has not gone to a roll call.
Titles
S. 4588 goes by 3 titles, 1 of them short titles.
- Taxing Buybacks from Big Oil Windfalls Act — Display Title
- Taxing Buybacks from Big Oil Windfalls Act — Short Title(s) as Introduced
- A bill to amend the Internal Revenue Code of 1986 to increase the excise tax for the repurchase of corporate stock by large oil and gas companies. — Official Title as Introduced
Lobbying
2 clients hired 2 firms and 16 registered lobbyists who named S. 4588 in 2 quarterly filings, 2026. Reported under the Lobbying Disclosure Act; a filing’s income covers everything its registrant worked that quarter, so the amounts below are the filings’, not this bill’s.
Filed under Environment/Superfund, Taxation/Internal Revenue Code, Transportation, Agriculture, Animals, Budget/Appropriations, Clean Air and Water (quality), Civil Rights/Civil Liberties.
Clients
Who paid to be heard, by how many filings named the bill.
| Client | Business | State | Firms | Filings | Reported |
|---|---|---|---|---|---|
| LEAGUE OF CONSERVATION VOTERS | — | District of Columbia | 1 | 1 | — |
| PHILLIPS 66 | — | District of Columbia | 1 | 1 | — |
Firms
Registrants who filed on the bill, by filings.
| Registrant | Clients | Filings | Reported |
|---|---|---|---|
| LEAGUE OF CONSERVATION VOTERS | 1 | 1 | — |
| PHILLIPS 66 | 1 | 1 | — |
Lobbyists
Named on the filings that cite the bill.
| Lobbyist | Firms | Clients | Filings |
|---|---|---|---|
| AMERICA FITZPATRICK | 1 | 1 | 1 |
| ANISHA SHARMA | 1 | 1 | 1 |
| CAROLINE ELIASSEN | 1 | 1 | 1 |
| DARIEN DAVIS | 1 | 1 | 1 |
| DAVID SHADBURN | 1 | 1 | 1 |
| DOUGLAS LINDNER | 1 | 1 | 1 |
| ELIANA KOSOVA | 1 | 1 | 1 |
| ELIZABETH DUNCAN | 1 | 1 | 1 |
| FRANCESCA GOVERNALI | 1 | 1 | 1 |
| LEAH DONAHEY | 1 | 1 | 1 |
| MADELEINE FOOTE | 1 | 1 | 1 |
| MATTHEW DAVIS | 1 | 1 | 1 |
| MISTY MCGOWEN | 1 | 1 | 1 |
| SAMUEL SHEPHERD | 1 | 1 | 1 |
| SARA CHIEFFO | 1 | 1 | 1 |
| SARA FONTES | 1 | 1 | 1 |
Filings
The documents themselves, on the Senate’s Lobbying Disclosure site, largest reported first.
| Client | Registrant | Period | Reported | Document |
|---|---|---|---|---|
| PHILLIPS 66 | PHILLIPS 66 | 2026 second_quarter | $1.3M | 2nd Quarter - Report |
| LEAGUE OF CONSERVATION VOTERS | LEAGUE OF CONSERVATION VOTERS | 2026 second_quarter | $230K | 2nd Quarter - Report |
Classification
The Congressional Research Service files S. 4588 under Taxation, one of its 31 policy areas.
CRS Subjects
CRS assigns every bill one policy area from its 31; S. 4588’s is Taxation.
s4588/policy-areas.txtSource: congress.gov · legiscan.com