Chapter 32 — Key Takeaways

Two types of fiscal policy

• Automatic stabilizers: progressive taxes, UI, SNAP — kick in automatically, fast, self-reversing
• Discretionary policy: stimulus packages, tax cuts — slower, requires legislation, can be much larger

The multiplier

Multiplier = ΔGDP / ΔG. Can be >1 (spending cascade) or <1 (crowding out). Size depends on: type of spending, state of the economy, monetary policy stance, openness. CBO estimates: government purchases 0.5–2.5; transfers to poor 0.8–2.1; tax cuts for rich 0.1–0.6.

Debt and deficits

Deficits are justified during recessions and for productive investment. Persistent structural deficits at full employment are problematic (crowding out, growing interest burden).

The Reinhart-Rogoff error

A spreadsheet error in an influential paper was used to justify European austerity that deepened recessions. Lesson: empirical claims drive policy with real human consequences.

Themes

• Disagreement — about multiplier size and when austerity is appropriate
• Data tells stories — the R-R error is a cautionary tale about the fragility of empirical claims