72 Pa. Stat. § 1601-A
Whenever the General Assembly has provided revenues for the general purposes of any fiscal period and the Governor, the Auditor General and the State Treasurer determine such revenues will not be sufficient for the current and other expenses payable from the General Fund or such determination is made with regard to the revenues of the Motor License Fund, as a result of which the collectible revenues may not be sufficient to defray the current and other expenses payable from the General Fund or those of the Motor License Fund, the Governor, the Auditor General and the State Treasurer, on behalf of the Commonwealth of Pennsylvania, are hereby authorized and directed during any fiscal period to authorize and direct the borrowing, from time to time, on the credit of the current revenues levied, assessed, collectible and accruing during any current period or on the credit of such revenues of the Motor License Fund, or on the credit of the sum of such revenues of both funds, such sum or sums of money not exceeding, in the aggregate, one-fifth of the contemplated receipts from the revenues which have been provided for either of said funds or from the sum of the revenues of both funds, depending upon the fund or funds for which the loans are being made, based upon estimates submitted to the Governor through the Budget Secretary by the Department of Revenue for any current period by the General Assembly, for the general purposes or the purposes of the General Fund or Motor License Fund of any fiscal period: Provided, That the money borrowed at any one time, when added to the outstanding amount of any other such loan made during such period, shall not exceed one-fifth of the contemplated revenues for such fund or the contemplated revenues of the sum of both funds for such fiscal period.
72 P.S. § 1601-A