Fiscal policy and monetary policy
Two different levers, held by two different institutions, frequently confused and occasionally pulling against each other.
Two distinct tools act on an economy, and the distinction matters because they are wielded by different people with different objectives and different constraints.
Monetary policy
Controlled by the central bank. Principally the setting of short-term interest rates, plus the tools built around them. Aimed at price stability and, in some mandates, employment. See how the Fed actually works.
- Fast to change. A committee can act in a single meeting.
- Slow to act. The effect on spending and hiring takes many months.
- Blunt. One rate applies to everyone; it cannot target a region or a sector.
Fiscal policy
Controlled by the government. Taxation and public spending. Aimed at whatever the government is aiming at, which includes being re-elected.
- Slow to change. Requires legislation, usually with debate and delay.
- Fast to act. A payment or a tax change reaches households almost immediately.
- Targeted. Can be directed at a sector, a region or an income group.
Monetary policy is quick to decide and slow to bite. Fiscal policy is slow to decide and quick to bite. An economy needing an immediate, targeted response is poorly served by interest rates; one needing a rapid change of stance is poorly served by a legislature.
When they conflict
A government expanding spending while a central bank raises rates to restrain demand is a real and recurring situation. Each is acting within its mandate; the combination can partly cancel, and the central bank typically responds by tightening further.
Central bank independence is designed so that interest rates are not set by people facing an election. The arrangement is deliberate, and the tension it creates with fiscal authorities is a feature of the design rather than a malfunction.