unexpended balance

Result: the fund's unexpended balance shrank from $99.5 million to $92 million.

From Time Magazine Archive

The unexpended balance may be expended on such State highway projects as the Commission approves.

From Third Biennial Report of the Oregon State Highway Commission Covering the Period December 1st, 1916 to November 30th, 1918 by S. Benson

An unexpended balance of fifty-four thousand three hundred and nineteen dollars and twenty-three cents was appropriated "for the benefit of discharged soldiers disabled by wounds."

From General Scott by Marcus Joseph Wright

I think I also reminded you that the new letter of credit does not cover the unexpended balance of the old one but falls considerably short of it.

From Mark Twain's Letters — Volume 4 (1886-1900) by Albert Bigelow Paine

Between the passage of said act and the year 1870 the sum of $7,648,786.73 was paid upon said claims, leaving of the money appropriated an unexpended balance of $101,213.27.

From A Compilation of the Messages and Papers of the Presidents Volume 8, part 3: Grover Cleveland, First Term by James D. (James Daniel) Richardson