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What about Japan? It's a question I often hear from advocates of fiscal expansion. Japan has huge debts and no crisis or inflation (so far). Doesn't that prove the US can borrow a ton more money painlessly?  I offer two new points today: 1) Not every high debt country is so happy. 2) Just what did Japan get for all its fiscal stimulus? Indeed, I will start asking "What about Japan?" Japan seems a tough case for those who advocate that fiscal stimulus will save us from secular stagnation, or that huge spending programs bring prosperity in other dimensions.    1. Picking and choosing Here, fresh from the April IMF Fiscal Monitor   is the list of top 30 countries sorted by debt to GDP ratios. I boldfaced larger countries.  Yes, Japan is up there at 256% of GDP. The champion is Venezuela however. Sudan and Eritrea are not particularly known for economic prosperity. Greece and Italy are not held up as examples to follow either. Serial defaulter Argentina is behi...

This marvelous plot comes from an interesting article, The Monetary and Fiscal History of Brazil, 1960-2016 by Joao Ayres, Marcio Garcia, Diogo A. Guillén, and Patrick J. Kehoe. The article is part of the Becker-Friedman Institute Project , complete with a big and now easily available data collection effort, and forthcoming book .  If you want a deep historical and economic analysis of fiscal and monetary interactions, this is an amazing resource. And it summarizes historical episodes that North Americans just might want to know more about soon!  (HT Ricardo Reis who pointed it out in a great discussion last week, that I will post as soon as it's available.)  To me the graph is at first blush a reminder that inflation can stop on a dime, despite sticky prices, seemingly adaptive or sticky expectations, Phillips curves, and so forth. Brazil seems to have had 6 Tom Sargent "end of inflations" episodes in 10 years! (Reminder: Tom showed that inflation can end very quickly i...

Essay on monetary policy in National Review Online .  Short version: The Fed's monetary policy has returned to the intellectual framework of the late 1960s. At best "expectations" now float around as an independent force, manipulable by speeches, but not tied to patterns of action by the Fed as analysis since the 1980s would require.  If you follow the conventional reading of how monetary policy works, that observation leads to a natural prediction:  we're on the verge of reliving 1970s inflation. (Fiscal policy, entitlements, regulation and cities seem to be headed also to 1970s policy on steroids.)  True, the Fed says "we have the tools" to stop inflation should it break out. But that tool is to rerun 1980. Does the Fed have the will? Will the Fed really induce a 2 year agonizing recession to bring down inflation, followed by 15 years of historically unprecedented high interest rates? Or will the Fed do what it did three times before that -- half-hearted i...

r<g is an essay on the question whether r<g means the government can borrow and not worry about repaying debts. No.  Abstract: A situation that the rate of return on government bonds r is less than the economy's growth rate g seems to promise that borrowing has no fiscal cost. r<g is irrelevant for the current US fiscal problems. r<g cannot begin to finance current and projected deficits. r<g does not resolve exponentially growing debt. r<g can finance small deficits, but large deficits still need to be repaid by subsequent surpluses. The appearance of explosive present values comes by using perfect-certainty discount formulas with returns drawn from an uncertain world. Present values can be well behaved despite r<g. The r<g opportunity is like the classic strategy of writing put options, which fails in the most painful state of the world. The essay is based on comments I gave at the spring NBER EFG meeting on Ricardo Reis' "The con...