US SB25

Imposes a $1 trillion one-time tax on major fossil fuel companies (those responsible for over 1 billion metric tons of CO2 emissions between 2000-2023), with each company's share calculated based on their proportion of total covered emissions

Establishes the Polluters Pay Climate Fund in the U.S. Treasury to receive all tax revenues and fund climate resilience, adaptation, disaster response, and environmental justice initiatives

Requires at least $15 billion annually for FEMA disaster response and resilience programs (including $3 billion for the Building Resilient Infrastructure and Communities program) and at least $6 billion for Clean Air Act grants and technical assistance

Mandates that 40% of fund expenditures benefit environmental justice communities, defined as communities of color, low-income communities, and Tribal/Indigenous communities disproportionately affected by pollution

Allows companies to pay the tax in 9 annual installments (20% first year, then 10% each subsequent year) with payment due starting September 30, 2026, and explicitly preserves state/local legal remedies against polluters for climate-related damages