In February 2007 Robert M. Kimmitt Deputy Secretary of State for USA and Plamen Oresharski Minister of Finance for Bulgaria signed bilateral agreement for avoidance of double taxation between USA and Bulgaria. The treaty regulates how the tax codes should be applied in case residents or companies of the contracting states derive income in any or both of the contracting states. The taxation of income from real estate property and business enterprises are discussed in articles 5, 6 and 7 of the treaty. The full text of the treaty is linked below.
US-Bulgaria Treaty for Avoidance of Double Taxation