What is a deficit and why isn't it necessarily bad?

A deficit simply means the government spent more than it collected in taxes over a given period. This sounds bad if you think of it like household finances, but for a currency-issuing government, deficits serve an important function.

When the government runs a deficit, it's adding more dollars to the economy than it's removing. Those dollars become savings for the private sector - your savings account, your pension fund, the cash in your wallet. A government deficit is, by accounting identity, a private sector surplus.

Conversely, when the government runs a surplus (spending less than it taxes), it's removing dollars from the economy. This can actually lead to recessions because it drains financial resources from the private sector. Historically, every significant federal surplus in US history has been followed by a depression or recession.

Deficits aren't inherently good or bad - they're a tool. The appropriate level of deficit depends on what the economy needs. During recessions, larger deficits help stabilize the economy by maintaining spending and employment. During booms, smaller deficits or surpluses can help cool overheating. The goal should be achieving public purposes - full employment, price stability - not hitting arbitrary deficit targets.