Activities of the Finance Department include planning, administration, and supervision of the financial operations of the City. The City Secretary/Finance Director, Christi Shivers, holds these responsibilities. Also funded in this department is the Payroll Specialist position.

Specific financial operations include payroll, general ledger maintenance, financial reports, data processing services, revenue collection, investments, and debt management.

The City Secretary/Finance Director is appointed by the City Council. This sets up a clear division of responsibilities related to municipal finances in the City of Mexia, providing a superior set of checks and balances for the expenditure of public funds.