Budget Deficit
A shortfall when a government's expenditures exceed its revenues in a given period, funded by borrowing.
What is Budget Deficit?
A budget deficit occurs when a government's total outlays (spending on government programs, debt interest, and transfer payments) exceed its total receipts (taxes, fees, and other revenues) during a fiscal year. The gap must be financed by borrowing, most commonly through the issuance of government bonds or treasury securities sold to domestic and foreign investors. Cumulative deficits accumulate into the national debt (the total outstanding stock of government obligations). Budget deficits can be cyclical—arising automatically in recessions as tax revenues fall and automatic stabilizers increase spending—or structural, reflecting a chronic imbalance between spending commitments and revenue capacity. Deficits are typically expressed as a percentage of GDP to allow meaningful cross-country and historical comparisons.
Example
The US federal government recorded a budget deficit of approximately $1.695 trillion in fiscal year 2023 (ending September 30, 2023), representing approximately 6.2% of GDP—among the largest peacetime deficits in US history. The deficit reflected a combination of reduced revenues (expiration of pandemic-era tax measures), elevated mandatory spending on Social Security and Medicare, and higher interest payments on the national debt as interest rates rose sharply. The Congressional Budget Office projected continued annual deficits exceeding $1 trillion through the following decade.