Skip to main content
Menu

Main navigation

  • About
    • Annual Reports
    • Leadership
    • Jobs
    • Student Programs
    • Media Information
    • Store
    • Contact
    LOADING...
  • Experts
    • Policy Scholars
    • Adjunct Scholars
    • Fellows
  • Events
    • Upcoming
    • Past
    • Event FAQs
    • Sphere Summit
    LOADING...
  • Publications
    • Studies
    • Commentary
    • Books
    • Reviews and Journals
    • Public Filings
    LOADING...
  • Blog
  • Donate
    • Sponsorship Benefits
    • Ways to Give
    • Planned Giving

Issues

  • Constitution and Law
    • Constitutional Law
    • Criminal Justice
    • Free Speech and Civil Liberties
  • Economics
    • Banking and Finance
    • Monetary Policy
    • Regulation
    • Tax and Budget Policy
  • Politics and Society
    • Education
    • Government and Politics
    • Health Care
    • Poverty and Social Welfare
    • Technology and Privacy
  • International
    • Defense and Foreign Policy
    • Global Freedom
    • Immigration
    • Trade Policy
Live Now

Blog


  • Blog Home
  • RSS

Email Signup

Sign up to have blog posts delivered straight to your inbox!

Topics
  • Banking and Finance
  • Constitutional Law
  • Criminal Justice
  • Defense and Foreign Policy
  • Education
  • Free Speech and Civil Liberties
  • Global Freedom
  • Government and Politics
  • Health Care
  • Immigration
  • Monetary Policy
  • Poverty and Social Welfare
  • Regulation
  • Tax and Budget Policy
  • Technology and Privacy
  • Trade Policy
Archives
  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • November 2020
  • October 2020
  • September 2020
  • August 2020
  • July 2020
  • June 2020
  • May 2020
  • April 2020
  • March 2020
  • February 2020
  • January 2020
  • December 2019
  • November 2019
  • October 2019
  • September 2019
  • August 2019
  • July 2019
  • June 2019
  • May 2019
  • April 2019
  • March 2019
  • February 2019
  • January 2019
  • December 2018
  • November 2018
  • October 2018
  • September 2018
  • August 2018
  • July 2018
  • June 2018
  • May 2018
  • April 2018
  • March 2018
  • February 2018
  • January 2018
  • December 2017
  • November 2017
  • October 2017
  • September 2017
  • August 2017
  • July 2017
  • June 2017
  • May 2017
  • April 2017
  • March 2017
  • February 2017
  • January 2017
  • December 2016
  • November 2016
  • October 2016
  • September 2016
  • August 2016
  • July 2016
  • June 2016
  • May 2016
  • April 2016
  • March 2016
  • February 2016
  • January 2016
  • December 2015
  • November 2015
  • October 2015
  • September 2015
  • August 2015
  • July 2015
  • June 2015
  • May 2015
  • April 2015
  • March 2015
  • February 2015
  • January 2015
  • December 2014
  • November 2014
  • October 2014
  • September 2014
  • August 2014
  • July 2014
  • June 2014
  • May 2014
  • April 2014
  • March 2014
  • February 2014
  • January 2014
  • December 2013
  • November 2013
  • October 2013
  • September 2013
  • August 2013
  • July 2013
  • June 2013
  • May 2013
  • April 2013
  • March 2013
  • February 2013
  • January 2013
  • December 2012
  • November 2012
  • October 2012
  • September 2012
  • August 2012
  • July 2012
  • June 2012
  • May 2012
  • April 2012
  • March 2012
  • February 2012
  • January 2012
  • December 2011
  • November 2011
  • October 2011
  • September 2011
  • August 2011
  • July 2011
  • June 2011
  • May 2011
  • April 2011
  • March 2011
  • February 2011
  • January 2011
  • December 2010
  • November 2010
  • October 2010
  • September 2010
  • August 2010
  • July 2010
  • June 2010
  • May 2010
  • April 2010
  • March 2010
  • February 2010
  • January 2010
  • December 2009
  • November 2009
  • October 2009
  • September 2009
  • August 2009
  • July 2009
  • June 2009
  • May 2009
  • April 2009
  • March 2009
  • February 2009
  • January 2009
  • December 2008
  • November 2008
  • October 2008
  • September 2008
  • August 2008
  • July 2008
  • June 2008
  • May 2008
  • April 2008
  • March 2008
  • February 2008
  • January 2008
  • December 2007
  • November 2007
  • October 2007
  • September 2007
  • August 2007
  • July 2007
  • June 2007
  • May 2007
  • April 2007
  • March 2007
  • February 2007
  • January 2007
  • December 2006
  • November 2006
  • October 2006
  • September 2006
  • August 2006
  • July 2006
  • June 2006
  • May 2006
  • April 2006
  • Show More
May 5, 2010 8:43AM

What’s the Future for Supply‐​Side Economics?

By Daniel J. Mitchell

SHARE

Kevin Williamson has a long‐​overdue piece in National Review making two essential points about supply‐​side economics and the Laffer Curve. First, he explains that tax cuts are not the fiscal equivalent of a perpetual motion machine. Simply stated, too many Republicans have fallen into very sloppy habits. They oftentimes fail to understand the difference between “supply‐​side” tax rate reductions that actually improve incentives to engage in productive behavior and social‐​engineering tax cuts that simply allow people to keep more money, regardless of whether they create more wealth. This does not necessarily mean the latter form of tax cuts are bad, but they definitely do not boost economic performance and generate revenue feedback. Moreover, even when GOPers are talking about supply‐​side tax cuts, they frequently exaggerate the positive effects by claiming that lower tax rates “pay for themselves.” I certainly think that can happen, and I give real‐​world examples in this video on the Laffer Curve (including Reagan’s lower tax rates on those evil rich people), but self‐​financing tax cuts are not common.


Williamson’s second point is that the true fiscal burden is best measured by looking at how much government is spending. I might quibble with his description of deficits as a form of deferred taxation since technically debt can be rolled over in perpetuity, but his main point is right on the mark. There is no doubt that most forms of government spending — regardless of the means of financing — harm growth by diverting money from the productive sector of the economy (technically, the economic damage occurs because capital and labor are misallocated and incentives are diminished, but let’s not get too wonky). Here are some excerpts from Williamson’s article:

Properly understood, there were no Reagan tax cuts. In 1980 federal spending was $590 billion and in 1989 it was $1.14 trillion; you don’t get Reagan tax cuts without Tip O’Neill spending cuts. Looked at from the proper perspective, we haven’t really had any tax cuts to speak of — we’ve had tax deferrals. …even during periods of strong economic growth, there has been nothing to indicate that our economy is going to grow so fast that it will surmount our deficits and debt without serious spending restraint. This should be a shrieking klaxon of alarm for conservatives still falling for happy talk about pro‐​growth tax cuts and strategic Laffer Curve optimizing. …The exaggeration of supply‐​side effects — the belief that tax‐​rate cuts pay for themselves or more than pay for themselves over some measurable period — is more an article of faith than an economic fact. But it’s a widespread faith: George W. Bush argued that tax cuts would serve to increase tax revenues. So did John McCain. …It is true that tax cuts can promote growth, and that the growth they promote can help generate tax revenue that offsets some of the losses from the cuts. …The problem with magical supply‐​siderism is that it gives Republicans a rhetorical and intellectual framework in which to ignore spending — just keep cutting taxes, the argument goes, and somebody else will eventually have to cut spending. The results speak for themselves: Tom DeLay and Dennis Hastert and Trent Lott and Bill Frist all know how to count, but, under their leadership, Republicans spent all the money the country had and then some.

Now that we’ve chastised Republicans, it’s time to turn our attention to the Democrats. We know they are bad on spending (I often joke that Republicans expand government out of stupidity, while Democrats do it for reasons of malice), so let’s focus on their approach to Laffer Curve issues. If the GOP is guilty of being too exuberant, the Democrats and their allies at the Joint Committee on Taxation (the bureaucracy on Capitol Hill that estimates the revenue impact of tax policy changes) are guilty of deliberate blindness. The current methodology used by the JCT (with the full support of the Democrats) is to assume that changes in tax policy — regardless of magnitude — have zero impact on economic performance. If you double tax rates, the JCT assumes the economy is unaffected and people earn just as much taxable income. If you replace the IRS with a flat tax, the JCT assumes there is no effect on macroeconomic performance. Sounds unbelievable, but this video has the gory details, including when my former boss, Senator Bob Packwood was told by JCT that revenues would rise year after year even if the government imposed a 100 percent tax rate.


Interestingly, the European Central Bank just released a new study showing that there are substantial Laffer Curve affects and that lower tax rates generate large amounts of revenue feedback. In a few cases (Sweden and Denmark), the researchers even conclude that some lower tax rates would be in that rare category of self‐​financing tax cuts. But the key point from this ultra‐​establishment institution is that changes in tax rates do lead to changes in taxable income. This means it is an empirical question to determine the revenue impact. Here’s a key excerpt from the study’s conclusion:

We show that there exist robust steady state Laffer curves for labor taxes as well as capital taxes. …EU-14 countries are much closer to the slippery slopes than the US. More precisely, we find that the US can increase tax revenues by 30% by raising labor taxes but only 6% by raising capital income taxes, while the same numbers for EU-14 are 8% and 1% respectively. …We find that for the US model 32% of a labor tax cut and 51% of a capital tax cut are self‐​financing in the steady state. In the EU-14 economy 54% of a labor tax cut and 79% of a capital tax cut are self‐​financing. We therefore conclude that there rarely is a free lunch due to tax cuts. However, a substantial fraction of the lunch will be paid for by the efficiency gains in the economy due to tax cuts.

Contrary to over‐​enthusiastic Republicans and deliberately‐​dour Democrats, the Laffer Curve/​supply‐​side economics debate is not a binary choice between self‐​financing tax cuts and zero‐​impact tax cuts. Yes, there are examples of each, but the real debate should focus on which types of tax reforms generate the most bang for the buck. In the 1980s, the GOP seems to have the right grasp of this issue, focusing on lowering tax rates and reducing the discriminatory tax bias against saving and investment. This approach generated meaningful results. As Nobel laureate Robert Lucas wrote, “The supply side economists, if that is the right term for those whose research we have been discussing, have delivered the largest genuinely free lunch that I have seen in 25 years of this business, and I believe we would be a better society if we followed their advice.”


But identifying and advocating pro‐​growth tax reforms, as Williamson notes, is just part of the battle. The real test of fiscal responsibility if controlling the size of government. Republicans miserably failed at this essential task during the Bush year. If they want to do the right thing for the nation, and if they want to avert a Greek‐​style fiscal collapse, they should devote most of their energies to reducing the burden of government spending.

Related Tags
Government and Politics, Political Philosophy, Tax and Budget Policy

Stay Connected to Cato

Sign up for the newsletter to receive periodic updates on Cato research, events, and publications.

View All Newsletters

1000 Massachusetts Ave, NW,
Washington, DC 20001-5403
(202) 842-0200
Contact Us
Privacy

Footer 1

  • About
    • Annual Reports
    • Leadership
    • Jobs
    • Student Programs
    • Media Information
    • Store
    • Contact

Footer 2

  • Experts
    • Policy Scholars
    • Adjunct Scholars
    • Fellows
  • Events
    • Upcoming
    • Past
    • Event FAQs
    • Sphere Summit

Footer 3

  • Publications
    • Books
    • Cato Journal
    • Regulation
    • Cato Policy Report
    • Cato Supreme Court Review
    • Cato’s Letter
    • Human Freedom Index
    • Economic Freedom of the World
    • Cato Handbook for Policymakers

Footer 4

  • Blog
  • Donate
    • Sponsorship Benefits
    • Ways to Give
    • Planned Giving
Also from Cato Institute:
Libertarianism.org
|
Humanprogress.org
|
Downsizinggovernment.org