The proceeds from the tax authorized less the actual cost of collection, not to exceed five per centum shall be paid by the State Department of Revenue to the Crenshaw County Commission on a monthly basis. Each municipal fire chief may expend that department's share in any manner he or she deems necessary for the operation and equipment for that fire department, except none shall be expended for salaries. Volunteer fire departments and rescue squads shall expend their shares only as prescribed in their respective bylaws or articles of incorporation, except no proceeds distributed under this part shall be expended for salaries. The funds shall be divided equally among the eligible fire departments, rescue squads, and Crenshaw County Association of Volunteer Fire Departments.