Fueling Alternative Transportation with a Carbon Aviation Tax Act of 2025

Bill Number

S. 173

Origin Chamber

Senate

Congress

119th Congress, Session 1

Policy Area

Taxation

Status

Introduced

Latest Action

2025-01-21: Read twice and referred to the Committee on Finance.

Last Updated

2025-05-27T14:12:54Z

AI-Generated Summary

Purpose

The legislation aims to increase excise taxes on fuel used in private (non-commercial) aviation to discourage high-emission private jet use, while redirecting the additional revenue to support environmental monitoring, clean air initiatives, and public transportation improvements, particularly in low-income and disadvantaged communities. This is intended to promote sustainable alternatives to private air travel and address air pollution disparities.

Key Provisions

• Tax Rate Increases for Private Jet Fuel:
• For non-commercial aviation fuel (e.g., private jets), the retail excise tax under Section 4041(c) rises to 35.9 cents per gallon plus $1.641 per gallon (an "inflation adjustment" provision increases the dollar amount annually after 2026 based on cost-of-living changes).
• Commercial aviation fuel remains at a lower rate of 4.3 cents per gallon.
• Similar increases apply to the manufacturers excise tax on kerosene under Section 4081(a)(2), with the same inflation adjustment.

• Refunds for Specific Uses:
• Taxpayers can receive refunds (without interest) for the increased portion of the tax if the fuel is used for "reasonable cause," such as scientific research, natural disaster evacuations, or medical emergencies. The IRS Secretary determines eligibility via regulations.
• This refund provision expires for fuel sold or used after January 1, 2028.

• Changes to Air Transportation Tax Exemptions:
• Eliminates the general exemption from the air transportation excise tax (Section 4261) for non-commercial flights, but retains a limited exemption for forestry activities (e.g., planting or caring for trees) if the aircraft avoids certain federally assisted airports or services.

• Creation of the Funding to Support Clean Communities Trust Fund (Section 9512):
• Establishes a new trust fund in the U.S. Treasury, funded by transfers equivalent to the additional tax revenues from private jet fuel (the $1.641 per gallon portion).
• Funds are available for appropriated expenditures on:
• Air quality monitoring under the Clean Air Act, including fenceline monitoring near pollution sources, expanding monitoring networks, maintaining equipment, and deploying sensors in low-income areas.
• Improving public transit and passenger rail within 20 miles of airports.
• Enhancing bus services for safety, frequency, and reliability, especially in disadvantaged communities.
• At least 50% of funds must go to disadvantaged communities, with priority for areas disproportionately affected by air pollution (determined by the Treasury Secretary in consultation with the EPA Administrator).
• Defines "disadvantaged community" as areas with high concentrations of low-income households (e.g., census block groups where 30% or more of residents earn ≤80% of area median income or ≤200% of the federal poverty line) or socially disadvantaged groups facing elevated health or environmental risks.

• Effective Date: All changes take effect on January 1, 2026.

Significant Changes to Existing Law

• Tax Code Amendments: Revises Internal Revenue Code (IRC) Sections 4041(c) (retail fuel tax), 4081(a)(2) (manufacturers fuel tax), and 4261 (air transportation tax) to impose higher, tiered rates specifically targeting private aviation, replacing uniform lower rates. Adds inflation adjustments not previously specified for these fuels.
• New Refund Mechanism: Introduces a temporary (through 2027) "reasonable cause" exception in IRC Section 6427(f) for non-commercial uses, allowing refunds of the tax increase—previously, no such targeted relief existed for private jet fuel taxes.
• Fund Diversion: Creates a new trust fund (Section 9512) that siphons the additional private jet tax revenue away from the existing Airport and Airway Trust Fund (Section 9502), which previously received all aviation fuel taxes. Makes conforming updates to exclude the new rates from airport funding.
• Exemption Narrowing: Removes broad exemptions for small aircraft and non-scheduled flights from the air transportation tax, limiting relief to specific forestry operations tied to non-federal facilities.

Potential Impacts

• On Government Agencies: The IRS will handle increased tax collection, refunds, and inflation adjustments, potentially raising administrative costs. The EPA and Department of Transportation (DOT) will oversee fund uses for monitoring and transit, boosting their capacity for clean air and infrastructure programs. The new trust fund could generate ongoing revenue (estimates not specified in the bill) for environmental and transit grants.
• On Citizens: Private jet users face significantly higher fuel costs (potentially over 40 cents per gallon total, plus inflation), which may reduce private flights. Disadvantaged communities benefit from improved air quality monitoring, reduced pollution exposure, and better public transit access, promoting equity in environmental health and mobility.
• On International Relations: Minimal direct impact, though higher U.S. private aviation taxes could influence global aviation norms or bilateral agreements on emissions if adopted elsewhere; no explicit international provisions.

Main Stakeholders Affected

• Private Jet Owners and Operators: Bear the brunt of higher taxes, potentially increasing operational costs for businesses, wealthy individuals, and charter services.
• Environmental and Public Health Groups: Gain from enhanced air toxics monitoring and pollution mitigation, particularly in vulnerable areas.
• Low-Income and Disadvantaged Communities: Primary beneficiaries through targeted funding for air quality improvements and transit, addressing pollution burdens.
• Public Transit Agencies and Local Governments: Receive grants for infrastructure upgrades, bus services, and rail near airports, aiding urban mobility.
• Aviation Industry (Commercial vs. Private): Commercial airlines are unaffected by tax hikes but may see indirect competition shifts; private sector faces revenue diversion from airport funds.
• Federal Agencies: IRS (tax enforcement), EPA (air monitoring guidance), Treasury (fund management), and DOT (transit implementation).

Notable Legal, Constitutional, or Political Implications

• Legal: Relies on Congress's taxing power under Article I, Section 8 of the U.S. Constitution to impose and allocate excise taxes. The bill's targeted rate increases and refund provisions could face challenges for unequal treatment (e.g., private vs. commercial aviation), but they align with precedents allowing differentiated environmental taxes. The temporary refund sunset and inflation mechanism add administrative complexity, requiring IRS rulemaking.
• Constitutional: No apparent violations; the revenue diversion to environmental purposes fits within spending clause authority. Definitions of "disadvantaged communities" draw from existing statutes (e.g., Clean Air Act, farm aid laws), ensuring consistency.
• Political: Positions as a progressive measure to tax luxury emissions and fund green equity, potentially polarizing along class and environmental lines—supporters (e.g., bill sponsors like Sens. Markey and Warren) emphasize climate justice, while opponents may argue it burdens business aviation or overreaches into state transit roles. Could set precedent for "carbon tax" style policies in aviation, influencing future climate legislation.

This summary was generated by AI and may contain inaccuracies. Refer to the official source document for the authoritative text.

Sponsor

Sen. Markey, Edward J. [D-MA]

Cosponsors (5)

Sen. Murphy, Christopher [D-CT], Sen. Merkley, Jeff [D-OR], Sen. Sanders, Bernard [I-VT], Sen. Warren, Elizabeth [D-MA], Sen. Whitehouse, Sheldon [D-RI]

Recent Actions

• 2025-01-21: Read twice and referred to the Committee on Finance.
• 2025-01-21: Introduced in Senate

Bill Versions

• Fueling Alternative Transportation with a Carbon Aviation Tax Act of 2025 — issued 2025-01-21 — PDF (11 pages)