Should governments borrow more in a recession?
For a euro-area country this is partly a legal question too: EU fiscal rules set limits on deficits and debt.
- Mainstream
Keynesian economics
Yes. When resources are idle the multiplier is above one, so borrowing to spend supports output.
- Mainstream
New classical and real business cycles
It may do little: households expect future taxes and save the tax cut (Ricardian equivalence, Barro 1974). Evidence suggests the full version doesn't hold.
- Mainstream
New Keynesian economics
Monetary policy first; fiscal policy matters most when interest rates are stuck near zero. IMF work in 2013 found forecasters had underestimated multipliers during austerity.
- Mainstream
Ordoliberalism
Only within agreed rules. Credible fiscal rules protect trust in the currency.
- Heterodox
Austrian school
No. Deficits prolong the misallocation and crowd out private investment.
- Heterodox
Post-Keynesian economics
Yes. Government deficits are the mirror image of private-sector saving (Wynne Godley's sectoral balances).
- Heterodox
Modern Monetary Theory
Yes, and deficits are normal for a currency issuer. The limit is inflation, not debt.