Guess how long it is before the state of New York runs out of cash? Less than a week, according to the state's comptroller.

On June 1, New York is due to send $3.8 billion in aid to local school districts, including $2.1 billion that was supposed to be paid in March but not sent for lack of funds. Yet New York is still $1 billion short. This could affect school operations, the solvency of any business that sells goods or services to the state, the paychecks of state workers, and ultimately home values.

At...