This bill mandates that federal agencies implement a system of zero-based budgeting , requiring them to submit comprehensive budget analyses every six years. These budgets must cover the next fiscal year and the subsequent four fiscal years, compelling agencies to justify all expenditures from a "zero" base rather than incrementally. A zero-based budget involves managers examining current objectives, operations, and costs, considering alternative ways to carry out programs, and ranking programs by importance. Furthermore, all agencies, with the exception of the Department of Defense and the National Nuclear Security Administration, are required to submit recommendations for Congress to cut or reduce appropriations by at least a 2-percent reduction from the previous year's discretionary spending.