The CBO estimates that the 35-day Trump Shutdown cost the U.S. economy $11 billion, with $3 billion permanently lost.
CNBC: “The federal government shutdown cost the economy $11 billion, according to a new analysis from the nonpartisan Congressional Budget Office. Although most of the damage to the economy will be reversed as the government re-opens and workers return to their jobs, the CBO estimated $3 billion in economic activity is permanently lost.”