Current funding for most U.S. government programs except for the military and Social Security payments expires on Sept. 30.
The government would continue to make payments on Treasury bonds and other forms of debt during a shutdown.
A government shutdown would prevent the collection and release of key market data including gross domestic product, unemployment figures and inflation data, clouding the ability of central bankers to gauge the strength of the economy, Cantrill said.
"The Fed – who has emphasized how data-dependent it currently is – would be flying blind" into the central bank's policy meeting in November, she said.
Economists at Capital Economists, meanwhile, said in a note on Monday that the risk of a shutdown is rising but said they expect a quick resolution.
Persons:
Kevin Wurm, PIMCO, Libby Cantrill, Goldman Sachs, Kevin McCarthy, Cantrill, There's, David Randall, Ira Iosebashvili, Matthew Lewis
Organizations:
Capitol, REUTERS, Federal Reserve, Republicans, Social, Goldman, . House, Capital Economists, Thomson
Locations:
Washington , U.S, shutdowns, New York, London