The purpose of the No Net Gain in Federal Lands Act of 2025 is to limit the federal government's acquisition of land. The main objective is to ensure that the total amount of federal land owned does not increase in any given fiscal year. This means that if the federal government acquires new land, it must dispose of an equal amount of existing federal land within the same year. Key provisions of this legislation include a requirement that the federal government must keep track of the amount of land it acquires and disposes of each year.