A balanced budget amendment (BBA) is a proposal to require a government to keep spending from exceeding revenue, typically on an annual basis and often written into a constitution or other high-level legal framework.
The economic tension is straightforward: strict rules can limit debt growth, but they can also force pro-cyclical tax hikes or spending cuts during recessions.
Core Design Choices
Not all BBAs are the same. Key design choices include:
- What counts as “spending” and “revenue”: cash vs accrual accounting, off-budget entities, and timing conventions can change measured compliance.
- Escape clauses: war, emergencies, or recession triggers may allow temporary deficits.
- Capital spending treatment: some rules exempt investment spending or allow borrowing for projects with long-run benefits.
- Enforcement: automatic spending cuts, supermajority requirements, courts, or political enforcement.
Macroeconomic Effects
In a downturn, revenues fall and certain expenditures (for example, unemployment benefits) rise automatically. A strict annual balance requirement can therefore force discretionary tightening exactly when private demand is weak, weakening automatic stabilizers and amplifying recessions.
In expansions, the rule can operate in the opposite direction: it can help prevent persistent deficits and keep debt from ratcheting upward.
Practical Risks
Two practical risks are frequently discussed:
- Creative accounting: governments may shift activities off-budget to satisfy the letter of the rule.
- Underinvestment: if capital spending is treated like consumption spending, political incentives may cut investment because its benefits are delayed.