Early Participation in Regulations Act of 2025This bill directs agencies to publish an advance notice of a proposed rulemaking at least 90 days before publishing a notice of proposed rulemaking for a major rule. A major rule is a rule that the Office of Information and Regulatory Affairs (OIRA) determines is likely to impose (1) an annual economic effect of $100 million or more; (2) a major increase in costs or prices for consumers, individual industries, government agencies, or geographic regions; or (3) significant adverse effects on competition, employment, investment, productivity, innovation, health, safety, the environment, or the ability of U.S. enterprises to compete with foreign-based enterprises.The advance notice mustinclude a description of the problem the rule may address, alternatives under consideration, and the legal authority for proposing the rule; andsolicit and provide at least 30 days for submission of written data, views, and argument from interested persons.Any difference between such advance notice and the notice of proposed rulemaking may not be considered arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law for the purposes of review under the Administrative Procedure Act.Advance notice is not required if the proposing agency is not required to publish notice of proposed rulemaking or OIRA finds that advance notice is (1) not in the public interest, (2) duplicative of a similar process, (3) not practicable due to a required deadline, or (4) for a rule that is routine or periodic in nature.