US Treasury Secretary Janet Yellen said on Wednesday that temporary measures taken by the Treasury to prevent federal debt from breaking the upper limit may be exhausted sometime in October. She provided more detailed forward-looking guidance on this than in the past.

“Based on the best and most recent information we have available, the most likely outcome is that cash and unconventional measures will run out in October,” Yellen said in a letter to Congress. “We will continue to update Congress on the situation as more information becomes available in the future.”