The aim of the article was to analyse the legal and financial status of the BBN, that is the office which carries out tasks resulting from the constitutionally defined role of the President of the Republic of Poland as the supreme commander of the armed forces and as a guardian of the sovereignty and security of the State. In the fol­lowing parts of the article the origin of BBN, as well as its legal and financial status were presented and analysed. The implementation of the research objectives made it possible to formulate the conclusion that the lack of financial separation of the Bureau creates serious problems in the course of financial management, as well as impelled to the formulation of a proposal to modify the financial status of the institution.