53 Pa.C.S. § 3016

The budget shall be in the form required by council and shall have appended to it a detailed analysis of the various items of expenditure and revenue. The budget as submitted and adopted shall be balanced. Council may reduce any item or items in the executive's (mayor's) budget by a vote of a majority of the council, but an increase in any item or items therein shall become effective only upon an affirmative vote of a majority plus one of the members of council. Council shall, upon the introduction of the proposed budget, fix a date for adoption which shall except as otherwise provided be not later than December 31 immediately following.