Increase Government Spending

Justin Wolfers thinks that a stimulus package should be more oriented on government spending, rather than tax cuts. He presents a clear explanation as to why.

Our current problem is deficient aggregate demand. The government can raise total spending either by buying more stuff, or it can lower taxes and hope that consumers take their tax breaks to the mall. If consumers do indeed spend their full tax cuts (a big if), you might think that either approach stimulates aggregate demand in roughly equal measure.

But that’s not the whole story. Tax cuts stimulate both aggregate demand and aggregate supply. If taxes are temporarily lower, they make working today more attractive than working tomorrow, and thus increase labor supply. This boost to the nation’s productive capacity means that a tax-cut-based stimulus doesn’t do as much to narrow the gap between output and what we can produce.

Under normal circumstances, this doesn’t present a problem, because the Fed can lower interest rates to close this output gap. But right now, the Fed has set interest rates as low as they can go, and so different principles apply. Eggertsson’s concern is that a big output gap will lead inflation to fall, leading real interest rates to rise in the middle of the recession. These higher real interest rates further dampen economic activity, and with the Fed powerless to offset this, there’s the very real risk of a deflationary spiral. And so a tax-cut-based fiscal stimulus might actually backfire.