Explain the lags and constraints that limit fiscal policy
The idea
Fiscal policy is slowed by three lags: recognition, before the need is identified in the data; action, while legislation is debated and passed; and impact, while the spending or tax change works through the economy. Together they can easily exceed a year, so a stimulus can arrive after a recovery has started and add to a boom instead. Beyond timing, government borrowing can crowd out private investment by raising interest rates, and Ricardian equivalence argues that households save a tax cut in anticipation of the future taxes needed to repay it.
A practice question
What is the action lag in fiscal policy?
- The delay before economic data reveal a problemWhy not: That is the recognition lag, which runs before anyone proposes a response.
- The delay while a policy change is legislated and enacted — correct
- The delay before a policy affects outputWhy not: That is the impact lag, which runs after the measure has been enacted.
The action lag is political and procedural. It is usually the longest of the three for fiscal policy, which is why monetary policy is generally the faster instrument.
A harder one
What does Ricardian equivalence argue?
- That deficits are always inflationaryWhy not: The argument points the other way: if the money is saved, the demand effect is small.
- That tax cuts and spending increases have identical effectsWhy not: It says close to the opposite, that a debt-financed tax cut may have little effect at all.
- That households save a tax cut in anticipation of the future taxes needed to repay it — correct
If it held fully, a debt-funded tax cut would not raise demand at all.
The hardest tier
What does Ricardian equivalence imply about a debt-financed tax cut?
- It will raise consumption more than a spending increase wouldWhy not: The argument runs the other way: the cut may raise consumption hardly at all.
- It will be inflationary regardless of conditionsWhy not: If households save the money, the demand effect — and so the price effect — is muted.
- Households may save it, anticipating the future taxes needed to service the debt — correct
If households look through the financing, a tax cut today is simply a tax rise deferred, and they save accordingly. Full equivalence is rarely observed, but it explains why tax-based stimulus can disappoint.
In the app: 9 practice questions on this outcome, a narrated walkthrough with diagrams, spaced review that brings it back before you forget it.
Take the free diagnostic →