Treasury’s Cash Pile Jumps Most Since September on Tax Day

Tax‑day inflows jolted the US Treasury’s cash balance on Wednesday, lifting it by the most since September, a shift that briefly pulled liquidity out of the financial system even as pressures remained contained.

The US Treasury’s cash balance on Wednesday rose by some $145 billion — the largest one-day increase since the September quarterly tax date — amid inflows around the April 15 tax deadline. That pushed the department’s cash pile to $924 billion, the highest amount since March 17 and up $227 billion for the week to tax day.