Va. Code Ann. § 15.2-1609.5

Each sheriff shall submit a monthly statement of all traveling expenses incurred by him, and by each of his full-time deputies, to his county or city. The county or city shall pay the expenses to the person or vendor entitled thereto and submit same to the Compensation Board for reimbursement if within the sheriff's annual budget approved by the Board. Payments due counties and cities under this section shall be paid to the county or city within ninety days following the receipt by the Compensation Board of a completed statement of monthly expenses.