Treasury Secretary Janet Yellen, in a letter on Friday to congressional leaders, said the Treasury would begin using extraordinary measures Jan. 21.

President-elect Donald Trump will take charge of a federal government that will reach its self-imposed debt limit of $36 trillion dollars a day after he is sworn in on Monday.

The nation will hit its roughly $36 trillion debt limit on Tuesday, when the Treasury Department will start taking extraordinary measures to allow the government to pay its bills, outgoing Treasury Secretary Janet Yellen said in a letter to congressional leaders on Friday.

U.S. Treasury Secretary Janet Yellen said that the government would reach its statutory borrowing limit on Tuesday and would begin employing "extraordinary measures" to keep from breaching the cap and triggering a potential catastrophic default.