Treasury secretary Janet Yellen, in one of her final major acts in office, warned Congress late Friday that the Treasury will need to begin "extraordinary measures" on Tuesday to avoid hitting the debt limit.

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

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

In one of her last acts as U.S. Treasury Secretary, Janet Yellen said her agency will start taking “extraordinary measures,” or special accounting maneuvers intended to prevent the nation from hitting the debt ceiling,

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.

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.