Office of the Chief Financial Officer

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Bill Slack

Deputy Chief Financial Officer

Bill SlackBill Slack is the deputy chief financial officer for the Office of Financial Operations and Systems (OFOS). He maintains the District’s general ledger (official "book" of financial records),  produces the city’s Comprehensive Annual Financial Report (CAFR) timely and accurately each year, and provides a broad range of payroll- and retirement-related services.

Prior to his selection as Deputy CFO, he served as deputy controller in June 2002. Prior to that time, Mr. Slack was the Director of the Financial Control and Reporting Division for approximately three years. In that position, he managed the production and timely issuance of the District’s Comprehensive Annual Financial Report (CAFR) and ensured that the District recorded financial transactions in accordance with generally accepted accounting principles (GAAP).  Mr. Slack also served as the primary liaison responsible for responding to inquiries received from the U.S. Government Accountability Office (GAO), congressional subcommittees, bondholders, and other stakeholders regarding the District’s CAFR and accounting practices. 

During his tenure with the District government, Mr. Slack has held other posts within the Office of the Chief Financial Officer.  For more than a year, Mr. Slack served as an Accountant within OFOS’s Accounting Policy Division, where he performed analyses of the District’s financial operations and researched relevant laws and regulations (e.g., Public Laws, Control Board Directives, and CFO Orders). In addition, he authored the Policies and Procedures Manuals for the Office of Financial Operations and Systems and co-authored the District’s Policies and Procedures Manual for Grants Administration and Development and the Office of Budget and Planning.  In November 1998, Mr. Slack was selected as the Director of OFOS’s Accounting Policy Division, and in that capacity, he established and maintained District-wide accounting policies and procedures and researched and reviewed accounting changes and events that impacted the District’s accounting and financial reporting practices. 

Prior to joining the Office of the Chief Financial Officer, Mr. Slack served as the Manager, Capital Programs Division, at the DC Housing Authority for four years.  He also served as the Supervisor, Tenant Program and Accounts Branch at the Department of Public and Assisted Housing for four years.

Mr. Slack is a certified public accountant and holds an MBA degree in Finance and Investments from the George Washington University, Washington, DC.