What office is not a part of the executive office of the president?

The Office of Management and Budget (OMB) is part of the Executive Office of the President (EOP), but the Congressional Budget Office (CBO) is not. The CBO is an independent agency that provides economic data and analysis to Congress, while the OMB assists the President in overseeing the federal budget and implementing policies. Other offices outside the EOP include the Department of Justice and the Department of State, which are part of the broader executive branch but not part of the EOP itself.