A county may direct the class or subclass of property that is subject to the county property tax. A county may impose a tax on the value of property of any sum that may be necessary: to pay the principal and interest of any loan obtained by the county according to law; to provide for the sinking fund authorized under paragraph (3) of this subsection; and for the support and maintenance of the county government. A county may create a sinking fund to meet the liabilities incurred by the county. A county may provide for: the prompt collection of all taxes due the county; and the sale of property for the payment of unpaid taxes. A county may: correct errors in the assessment of property; provide for the reduction or abatement of assessments improperly made; and provide for the reimbursement of overpayments made because of an assessment error. A county may impose a tax for the organization, operation, and maintenance of: libraries; fire and ambulance services; and other municipal services. A county may authorize the purchase, sale, construction, maintenance, and operation of all property necessary or incidental to the services listed in paragraph (1) of this subsection. A county may impose a tax to pay for additional retirement or disability benefits to any former county employee who is entitled to receive additional benefits.