The Department of Management and Financial Services provides centralized support to other county agencies in the areas of budgeting, management analysis, economic and analytical research, human resources, benefits management, training, procurement, financial accounting and reporting, payroll, risk management, insurance, capital financing and debt management. The department is organized into four main programs or divisions, including Accounting and Financial Analysis, Budget and Research, Human Resources Management and Procurement.

The mission of the Department of Management and Financial Services is to effectively support the providing of direct services to the residents of Loudoun County by professionally managing, on behalf of the county administrator, organization-wide processes and providing sound advice on major policy, financial and operational matters.