The main purpose of the Presidential Allowance Modernization Act of 2025 is to update the financial benefits provided to former Presidents of the United States. This legislation aims to ensure that former Presidents receive a more substantial monetary allowance and annuity, reflecting current economic conditions and the needs of these individuals after their time in office. Key provisions of the Act include the establishment of an annual annuity of $200,000 for each former President, which will be paid for life.