Where is the US government getting all the money it’s spending in the coronavirus crisis?

 Central banks: The Federal Reserve can and does create money, and it can and does use that money to buy government bonds. That’s what the Fed did during the Great Recession of 2007-09, and that’s what it is doing now. To be precise, the Fed isn’t giving money directly to the Treasury. The Fed is, in effect, buying government IOUs (Treasury bonds) from private investors or foreign governments who have lent money to the Treasury.  But, of course, the more the Fed buys, the lower the interest rates that the government has to pay on new borrowing, and the more the U.S. Treasury can borrow overall without pushing up that interest rate. (For details on what the Fed is doing, click here.) 

https://www.brookings.edu/blog/up-front/2020/03/25/where-is-the-u-s-government-getting-all-the-money-its-spending-in-the-coronavirus-crisis/