How US Government Shutdowns Work and Why They Happen

What Is a Government Shutdown?

A government shutdown occurs when the U.S. Congress fails to pass — or the president refuses to sign — legislation funding federal government operations. Without a spending law in place, federal agencies must halt all "non-essential" activities. This is not a choice: the Antideficiency Act legally prohibits federal officials from spending money that has not been authorized by Congress, even to keep routine operations running.

The U.S. government's fiscal year runs from October 1 to September 30. If Congress has not enacted all 12 annual appropriations bills before that deadline, it typically passes a continuing resolution (CR) — a stopgap measure that funds agencies at roughly the prior year's levels for a short period. When even that fails, a shutdown begins.

The Budget Process That Keeps Breaking Down

In theory, Congress passes 12 separate appropriations bills each year, covering everything from defense to housing. In practice, lawmakers have not met the October 1 deadline for all 12 bills in the same fiscal year since 1997. Partisan disputes over spending priorities, debt limits, and policy riders — provisions that attach unrelated legislation to must-pass budget bills — routinely prevent agreement.

When negotiations collapse entirely, a shutdown follows. A partial shutdown affects only agencies whose funding has lapsed, while others, funded by separate bills or multi-year appropriations, continue operating normally.

Who Keeps Working — and Who Doesn't

Not every federal employee goes home. Workers fall into three broad categories during a shutdown:

• Excepted (essential) employees — required to keep working without pay. This includes air traffic controllers, active-duty military, Border Patrol agents, federal law enforcement, and emergency medical staff.
• Furloughed employees — sent home and prohibited from working. They receive no paycheck until Congress restores funding.
• Employees funded outside annual appropriations — such as postal workers and some Veterans Affairs staff — who continue working and being paid normally.

Since 2019, a federal law guarantees that both furloughed and excepted workers receive retroactive back pay once a shutdown ends. Before that law, back pay was not automatic.

What Shuts Down — and What Suffers

The ripple effects of a shutdown are wide-ranging. National parks close or operate on skeleton staff. Passport and visa processing slows dramatically. The IRS delays tax refunds. The Food and Drug Administration curtails routine food safety inspections. Small business loan applications stall at the Small Business Administration.

Even services that technically continue can degrade. Brookings Institution researchers note that air traffic controllers, border agents, and TSA officers working without paychecks experience morale drops and financial stress — and some call in sick, triggering the kind of airport delays seen during past shutdowns.

The Economic Cost

Shutdowns impose measurable damage on the economy. The 35-day 2018–2019 shutdown — then the longest on record — cost the U.S. economy at least $11 billion, of which $3 billion was permanently lost, according to the Committee for a Responsible Federal Budget. The 2013 shutdown was estimated to have reduced GDP growth by $20 billion.

A 43-day shutdown in late 2025 surpassed all previous records. Bloomberg reported costs approaching $15 billion per week at its peak, with the National Economic Council estimating a total bill near $90 billion — underscoring how financial damage scales rapidly with duration.

Why Shutdowns Keep Happening

The U.S. budget process is uniquely vulnerable to political deadlock. Unlike most parliamentary democracies — where the government falls and new elections are called when a budget fails — the American system allows divided government to persist indefinitely while funding lapses. Congress and the White House can belong to different parties, or factions within a single party can block passage.

Shutdowns have increasingly become a negotiating tactic: one side threatens or allows a shutdown to force concessions on unrelated policy goals, from border wall funding to healthcare legislation. The U.S. Government Accountability Office has documented that even continuing resolutions — the most common workaround — cause administrative inefficiencies, hiring freezes, and planning disruptions in agencies that limp along on temporary funding.

Reform Proposals

Lawmakers have repeatedly proposed automatic continuing resolutions that would kick in whenever a budget deadline is missed, removing the shutdown threat entirely. Others have pushed for biennial budgeting — a two-year cycle that would reduce the frequency of funding battles. Neither reform has passed. Until the underlying political incentives change, shutdowns will remain a recurring feature of American governance — and a recurring cost for federal workers, businesses, and the public alike.