Tax Law and Guidance   Contact the Office of Tax and Revenue's Office of the General Counsel at (202) 442-6500 or via email for clarification of a District tax statute or to comment on information posted here.   Reference Materials Forms Notices Private Letter Rulings Rulemakings Sales Tax Information Tax Rulings Legislative Information DC Code+ Ballpark Tax Legislation FY 2010 Budget Support Emergency Act* FY 2006 Budget Support Act Tax Law Changes* FY 2003 Budget Support Amendment Emergency Act Tax Law Changes* Tax Clarity Act of 2000