73 Pa.C.S. § 4912

In addition to the levies provided for in section 4908 (relating to tax levies), when it is shown to the court that the debts due by a township exceed the amount which the board of commissioners may collect in any year by taxation, the court, after ascertaining the amount of indebtedness of the township, may, in an action of mandamus, direct the board of commissioners by special taxation to collect an amount sufficient to pay the debts. If the amount of the indebtedness is so large as to render it unadvisable to collect the entire amount in any one year, taking into consideration other necessary taxation, the court may direct the special taxes to be levied and collected during successive years as may be required for payment of the debt.