The main purpose of this legislation is to amend the Internal Revenue Code to end certain tax credits related to the use of carbon dioxide in enhanced oil recovery. This act, titled the "End Polluter Welfare for Enhanced Oil Recovery Act of 2026," aims to reduce financial incentives for practices that contribute to fossil fuel extraction and promote more environmentally friendly alternatives. Key provisions of the legislation include the elimination of the use of carbon dioxide as a tertiary injectant in oil recovery processes for facilities that begin construction after the law is enacted.