You can still mail a letter - the United States Post Office is owned, but not operated by the federal government.
You won't be able to get a passport or visa.
Social Security checks will still be mailed out, but federal grant money will dry up until a budget agreement is reached.
National parks, monuments, and museums will close on Saturday if they can't reach a deal, but federal employees deemed essential must still report to work.
The government defines essential as anyone who protects life or property.
That means military members will still be expected to serve, but their pay will be held until a budget bill passes.
Members of Congress and the president will still get paid, but many of the 1.9 million civilian government employees will be furloughed.
If the shutdown is resolved quickly, there will most likely be a delay in most federal services, but for homebuyers looking to close on a house, the possible shutdown of the Federal Housing Authority is worrisome.
But a local realtor says a short shut down would have no impact on getting a housing loan insured.
"In the interim, a couple of days? No. That would have no impact. If this were to go on for a prolonged period of time, four to six weeks, then we would have issues. But if that were to happen we would have much bigger issues than that," said Dane Leslie, the President of the Northeast Florida Association of Realtors.
First Coast News