The complete texts of the following tax treaty documents are available in Adobe PDF format. If you have problems opening the pdf document or viewing pages, download the latest version of Adobe Acrobat Reader. For further information on tax treaties refer also to the Treasury Department's Tax Treaty Documents page. Income Tax Treaty PDF - 1970 Technical Explanation PDF - 1970 Income Tax Treaty PDF - 2006 Protocol PDF - 2006 Technical Explanation PDF - 2007 Memorandum of Understanding between the U.S. and Belgium - 2009 Arbitration Board Operating Guidelines - 2009