Executive Branch Budget Timetable*

April-June Conduct Spring planning review to establish presidential policy for the upcoming budget
July-August OMB provides agencies with policy guidance for the upcoming budget
September 1 Agencies subject to executive branch review submit initial budget request materials
September-January OMB & president review agency budget requests and prepare the budget documents
October 15 Independent agencies not subject to executive branch review submit initial budget request materials
November-December Legislative branch and the judiciary submit initial budget request materials
December Cabinet officers' and agency appeals to the president 
1st Monday in February President's budget submitted to Congress
January- February OMB sends allowance letters to agencies
July 15 President submits mid-session updates to the budget estimates