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The Fiscal Theory of the Price Level

The Fiscal Theory of the Price Level
John Cochrane
Princeton University Press, 2023
Level: advanced
Perspective: Institutionalist Economics, Post-Keynesian Economics
Topic: Institutions, Governments & Policy, Macroeconomics, Money & Debt
page count: 584 pages
ISBN: 9780691242248

Blurb

Where do inflation and deflation ultimately come from? The fiscal theory of the price level offers a simple answer: Prices adjust so that the real value of government debt equals the present value of taxes less spending. Inflation breaks out when people don’t expect the government to fully repay its debts. The fiscal theory is well suited to today’s economy: Financial innovation undermines money demand, and central banks don’t control the money supply or aggressively change interest rates, invalidating classic theories, while large debts and deficits threaten inflation and constrain monetary policy. This book presents a comprehensive account of this important theory from one of its leading developers and advocates.

John Cochrane aims to make fiscal theory useful as a conceptual framework and modeling tool, and for analyzing history and policy. He merges fiscal theory with standard models in which central banks set interest rates, giving a novel account of monetary policy. He generalizes the theory to explain data and make realistic predictions. For example, inflation decreases in recessions despite deficits because discount rates fall, raising the value of debt; specifying that governments promise to partially repay debt avoids classic puzzles and allows the theory to apply at all times, not just during periods of high inflation. Cochrane offers an extensive rethinking of monetary doctrines and institutions through the eyes of fiscal theory, and analyzes the era of zero interest rates and post-pandemic inflation.

Book summary

What is inflation, or its arguably even more troublesome brother, deflation? And what drives both? In most macroeconomic theories, by one form or the other it's 'too much money chasing too few goods'. That makes monetary policy the all-important lever to try and keep changes of the price level in a range that allows for decent economic planning, with interest rates taking centre stage as its primary instrument. Not so in this theory. John Cochrane demonstrates that by contrast, it's fiscal policy and the state's writ-like spending in competition with households and firms that drives inflation. Even more to the point, Cochrane deems government bonds as some kind of 'sovereign equity' the real return of which is balanced by changes in the nominal price level and sufficiently discounted against future changes in both interest rates and primary budget balances.

Comment from our editors:

Though undoubtedly highly valuable in its comprehensiveness and thoroughness, Cochrane's theoretical approach to inflation wouldn't come as a surprise to both Post-Keynesian and Modern Monetary Theory economists who have long deemed fiscal policy as perhaps the most important driver of changes in the general price level. That's because the state can do what nobody else in the economy can do: Spending first and financing second instead of the other way round. In its own money, a government is always solvent, and always capable of buying goods and services as it likes. Of course, it then needs to reduce the purchasing power of firms and households so that these do not compete for the resources required by the state, i.e. taxation. And by demanding firms and households to pay these taxes by exactly that money, it is only by this legal mechanism that money does retain any value whatsoever when it comes to fiat currency. Cochrane's, however, is the first thorough theory of exactly how this monetary sovereignty eventually comes to determine inflation - or at the very least constitute one of the latter's primary drivers.

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