SUPPLY SIDE ECONOMICS IS NONSENSE
The following commentary by Michael Meeropol was broadcast over WAMC radio on Friday, May 3, 2007
WHAT IS “SUPPLY SIDE ECONOMICS?”
The debate over the tax cuts that President Bush convinced Congress to pass in 2001, 2002 and 2003 has often centered around the fairness of those cuts[1]. Why do most of the benefits of the cuts accrue to the richest people in the country?
There is an answer and it goes to the heart of one of the great debates in the field of economics, – the debate about so-called supply side tax cuts.[2]
Just last month, Bruce Bartlett, former Reagan Administration economist, published an OP ED piece in the New York Times in which he baldly asserted that history has vindicated the main tenets of Supply-Side Economics.[3] That approach is summarized by
What he means by this is that raising revenue using a graduated income tax, with rates on high income tax-payers of 70% or 50% will so damage incentives that these individuals will refrain from saving and from investing. The rest of us will suffer from a sluggishly growing economy or, worse, lose our jobs.[4]
Thus, supply siders argue that the way to increase economic growth is to cut income tax rates, especially on high income individuals. That’s why the Bush Administration has supported the abolition of the Estate Tax and the tax on Dividend income received by individuals (not pension funds – those are already tax exempt).
These reduced tax rates will supposedly stimulate economic activity on the part of investors and make more investment funds available to start-up businesses. The alternative approach to stimulating the economy comes from the work of the British economist Keynes. In his major work, written during the Great Depression, Keynes argued that when the economy is growing sluggishly, the appropriate response is to use government fiscal policy (tax cuts or spending increases – both would work) and/or monetary policy (lower interest rates) to stimulate total spending.[5]
But he does not tell us the actual predictions made by the supply siders in 1981 when the Reagan Administration passed a three year tax cut.
Those predictions were that the cut in individual income tax rates would, 1) stimulate individual activity which would, over time, raise income tax revenue; 2) stimulate a higher rate of personal savings, and 3) reduce the budget deficit over time.[8]
Meanwhile, the Bush Administration has utilized massive tax cuts and budget deficits to recover from the 2001 recession and the economy still isn’t growing as fast as it did in the late 1990s when the top income tax rates were significantly higher than they are now.
Far from being vindicated, supply side economics has flunked the main test – the test of historical experience.
[1] See, for example, Robert Pollin, Contours of Descent (NY: Verso, 2003): 94-102.
[2] For a short introduction see Surrender: 46-48.
[3] Bruce Bartlett, “How Supply Side Economics Trickled Down” New York Times, 6 April, 2007.
[4] For more details on supply side economics, see Jude Wanniski “The Mundell-Laffer Hypothesis,” Public Interest 39 (spring 1975): 31-57.
[5] Keynes’ work is The General Theory of Employment Interest and Money (
[6] Here is Bartlett’s caricature: “Among the beliefs held by the Keynesians of that era were these: budget deficits stimulate economic growth; the means by which the government raises revenue is essentially irrelevant economically; government spending and tax cuts affect the economy in exactly the same way through their impact on aggregate spending; personal savings is bad for economic growth; monetary policy is impotent; and inflation is caused by low unemployment, among other things.” I will comment on each assertion one at a time:
1) “Budget deficits stimulate economic growth.” Traditional Keynesian theory argues that when the economy is producing below its capacity, any boost to total spending (whether from budget deficits, increases in consumption, increases in investment or increases in exports) will raise total income by putting previously unemployed resources – people and factories and farms – to work. This was proven in 1935 when the Germans built the Autobahns putting many unemployed workers to work and giving them incomes to spend putting still other people to work. (This illustrated the principle of the multiplier which is at the heart of Keynesian economics. For one example, see Campbell McConnell and Stanley Brue Macroeconomics (17th edition): 158-162. The original multiplier effect was introduced into economic theory in 1931. See R. F. Kahn, “The Relation of Home Investment to Unemployment,” Economic Journal (1931): 173-93.) Keynesians, however, have always argued that if the economy is utilizing its labor force and capital stock fully – in other words if we are at “full”employment – then any increase in aggregate spending (including as a result of budget deficits) will not increase economic growth but merely accelerate inflation. Keynesians, therefore, argued in 1967 that it was essential to raise taxes in order to reduce inflationary pressure because the
2) “The means by which government raises money is essentially irrelevant economically” and “Government spending and tax cuts affect the economy in exactly the same way through their impact on aggregate spending” actually are making the same point.
3) “Personal savings is bad for economic growth,” is one of the worst caricatures of
4) “Monetary policy is impotent,” was the original view of some Keynesians during the 1940s and 50s. They looked at the experience of the Great Depression when interest rates were below 1% and decided that as a depression fighting tool, monetary policy was likely to be ineffective. The Central Bank could lower interest rates but couldn’t force businesses to borrow and invest. (There was a saying to describe this: “You can lead a horse to water, but you can’t make it drink.”). In the context of the post World War II period, Keynesians all agreed that manipulation of interest rates was an important component of any coherent policy to stimulate economic growth, reduce unemployment and restrain inflation. Actually, it is the right-wing MONETARIST economists who argued that discretionary changes in monetary policy by the Central Bank would be ineffective – and thus they recommended taking discretion away from the Central Bank and forcing it to raise the supply of money a fixed amount every quarter no matter what. (For details see Surrender: 42-3 and the footnote references). Again,
5) Finally,
Blaming Keynesian economists for the stagflation of the 1970s is partially correct. Since Keynesian economics’ tool for dealing with the economy is to raise or lower spending, it is incapable of combating both inflation and unemployment at the same time. That is why President Richard Nixon imposed wage and price controls in 1971 and why President Gerald Ford flip-flopped from recommending a tax increase to fight inflation in the Fall of 1974 and a tax cut to fight recession in the Winter of 1975. But Keynesian economics didn’t cause the problem – it just had no way to simultaneously solve both parts of that problem.
[7] And what were those correct policies? Here is
[8] This is the theory of supply side economics.
[9] In response to the Bartlett OP-ED piece, I submitted the following letter to the Editor of the NY Times. It was not published. I include it here with the references to the data on the bottom:
The predictions of supply side economics were that a cut in marginal individual income tax rates would 1) stimulate individual activity causing an increase in individual income tax revenue over time, 2) stimulate a higher rate of personal savings, and 3) reduce the federal
budget deficit over time.
The following table shows none of these came true. 1982 was the first year the tax reductions were felt. 1983 was the year the full tax cut had been phased in. 1983-1989 were the years of recovery from the recession. Where is the increased savings? Where is the increased
government revenue from the income tax? The budget deficit finally comes down but in 1989 it is no lower than it was in 1980 (it was 2.7% of GDP then).
Year Individual In- Personal Sav- Federal Deficit
come taxes as ings as a per- as a percen-
a percentage centage of tage of GDP
of GDP GDP
1982 9.5 8.3 4.0
1983 8.9 6.6 6.0
1984 7.6 8.0 4.8
1985 7.9 6.6 5.1
1986 7.8 6.0 5.0
1987 8.3 5.1 3.2
1988 7.9 5.3 3.1
1989 8.1 5.2 2.8
Sincerely,
Michael Meeropol
Every number in the table is from the ECONOMIC REPORT OF THE
PRESIDENT, 2004. GDP from p. 284. Federal Income Tax receipts from p.
379, Personal Savings from p. 320, the Federal Budget Deficit as a
percentage of GDP from p. 378.