In all taxing districts which have authorized installment payments to be made after December 31 of the year in which taxes are levied, all unpaid installments of taxes upon real property shall be certified by the elected tax collector to the taxing district, together with a proper description of the property upon which the same is levied, at the time of complete and final settlement. All unpaid installments so certified to the taxing district shall be collected by the elected tax collector in accordance with section 11.
Upon final and complete settlement of a tax duplicate, a tax collector shall take an oath or affirmation in writing and subscribed by the tax collector, that he has made a true and just return of all taxes collected by him. Such oath or affirmation shall be administered by the officer of the taxing district empowered to make settlement, who shall have power to administer the same, and shall be filed with such officer.
72 P.S. § 5511.26