Congressional report finds higher tax rates don't hurt growth, so Republican party has it pulled

"Changes in the top marginal tax rate do not appear correlated with growth."

A new report from the US's Congressional Research Service has been suppressed by Republicans after it concluded that tax rates are uncorrelated with economic growth or saving, investment, and productivity growth – but do affect the extent of income inequality in the nation.

The report concludes:

The top income tax rates have changed considerably since the end of World War II. Throughout the late-1940s and 1950s, the top marginal tax rate was typically above 90%; today it is 35%. Additionally, the top capital gains tax rate was 25% in the 1950s and 1960s, 35% in the 1970s; today it is 15%. The average tax rate faced by the top 0.01% of taxpayers was above 40% until the mid-1980s; today it is below 25%. Tax rates affecting taxpayers at the top of the income distribution are currently at their lowest levels since the end of the second World War.

The results of the analysis suggest that changes over the past 65 years in the top marginal tax rate and the top capital gains tax rate do not appear correlated with economic growth. The reduction in the top tax rates appears to be uncorrelated with saving, investment, and productivity growth. The top tax rates appear to have little or no relation to the size of the economic pie.

However, the top tax rate reductions appear to be associated with the increasing concentration of income at the top of the income distribution. As measured by IRS data, the share of income accruing to the top 0.1% of U.S. families increased from 4.2% in 1945 to 12.3% by 2007 before falling to 9.2% due to the 2007-2009 recession. At the same time, the average tax rate paid by the top 0.1% fell from over 50% in 1945 to about 25% in 2009. Tax policy could have a relation to how the economic pie is sliced—lower top tax rates may be associated with greater income disparities.

The report is particularly important for its treatment of capital gains tax as well as just income tax. The former is significantly lower than the latter, and has been for all but three years of the US's post-WWII history. As a result, it is a significant avenue for tax avoidance.

The argument for keeping capital gains tax low is that it stimulates investment, by encouraging people to invest rather than spend income. If, as the report concludes, it is in fact unconnected with investment rates, then that method of tax-dodging could be closed without harming the economy much, if at all.

The report, which was written by a neutral government body, was not welcomed by the Republican party, which is opposed to much taxation. The New York Times' Jonathan Weisman writes:

Senate Republican aides said they had protested both the tone of the report and its findings. Aides to Mr. McConnell presented a bill of particulars to the research service that included objections to the use of the term “Bush tax cuts” and the report’s reference to “tax cuts for the rich,” which Republicans contended was politically freighted.

They also protested on economic grounds, saying that the author, Thomas L. Hungerford, was looking for a macroeconomic response to tax cuts within the first year of the policy change without sufficiently taking into account the time lag of economic policies. Further, they complained that his analysis had not taken into account other policies affecting growth, such as the Federal Reserve’s decisions on interest rates.

“There were a lot of problems with the report from a real, legitimate economic analysis perspective,” said Antonia Ferrier, a spokeswoman for the Senate Finance Committee’s Republicans. “We relayed them to C.R.S. It was a good discussion. We have a good, constructive relationship with them. Then it was pulled.”

The Republican congressional leadership. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

Photo: Getty
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If the left leaves it to David Cameron, we'll have Brexit for sure

Only an upbeat, leftwing case can keep Britain in the European Union.

After months flapping and hesitation, and with much of the reporting and detail so dull that it has barely penetrated the consciousness of even those who speak the language of ‘directives’ and treaty provisions, the EU referendum is upon us. With David Cameron signalling concrete outcomes for negotiations, we seem to be set for June, whatever the protests from opposition parties about the date being too close to local and national elections.  

Cameron’s deal, whose most substantive element consists of denying in-work benefits to European citizens, exemplifies the kind of debate that Conservative strategists want to create: a tedious, labyrinthine parochialism, blending the EU’s procedural dullness with an unquestioned mythology of the little Englander. Try actually reading the various letters, let alone the draft decisions, that Cameron extracted from Donald Tusk, and the agreement turns to putty in your head. But in summary, what Cameron is negotiating is designed to keep the EU debate as an in-house affair within the right, to continue and formalise the framing of the debate as between two strains of anti-migrant sentiment, both of them backed by big business.

The deal may be reactionary, but it is also mediocre in its scope and impact. The worries that many of us had in the leftwing pro-In camp, that Cameron’s deal would push back freedom of movement and working and environmental protections so far that we would be unable to mobilise for continued membership of the EU, can now be put to bed. Quite the opposite of allowing Cameron's narrative to demoralise us, the left must now seize an opportunity to put imagination and ideas back at the heart of the referendum debate.

The British political landscape in which that debate will play out is a deceptively volatile environment. Party allegiance is at a nearly all time low. Inequality is growing, and so is the gap between attitudes. The backbone of the UKIP vote – and much of the Out vote – will come from a demographic that, sometimes impoverished by the legacy of Thatcherite economic policy, sees itself as left behind by migration and change. On top of the class war, there is a kind of culture war underway in today’s Britain: on one side those who see LGBT rights, open borders and internationalism as the future; on the other side, those who are scared of the future. About the only thing these groups have in common with one another is their anti-establishment instincts, their total disdain and mistrust of politics as usual.

The only political movement to have broken through the fog of cynicism and disillusionment in British politics has come from the left. Jeremy Corbyn’s rise to the leadership of the Labour has unleashed something new - and while large parts of the press, and some Labour backbenchers, have portrayed this rise as a crusade of the “croissant eating” metropolitan elite, the reality is very different. The rise of the new Labour left has given voice to a renewed socialist and working class politics; its explicitly radical, outsider approach has given it traction across the social divides – among the young looking for a future, and among Labour’s old base. 

A politics of hope – however vague that term might sound – is the only real answer to the populist Euroscepticism that the Out campaign will seek to embody. Radical politics, that proposes an alternative narrative to the scapegoating of migrants, has to find voice in the course of this referendum campaign: put simply, we need to persuade a minimum wage worker that they have more in common with a fellow Polish migrant worker than they do with their employer; we need to persuade someone on a social housing waiting list should blame the privatisation of the housing market, not other homeless families. Fundamentally, the real debate to be had is about who the public blames for social injustice: that is a question which only the left can satisfactorily answer.

The outsider-led volatility of British politics gives the EU referendum a special kind of unpredictability. For voters who have lost faith in the political establishment – and who often have little materially to lose from Brexit – the opportunity to deliver a blow to David Cameron this summer will be tempting. The almost consciously boring, business-dominated Britain Stronger In Europe campaign makes a perfect target for disenfranchised public sentiment, its campaigning style less informed by a metropolitan elite than by the landed gentry. Its main weapons – fear, danger and uncertainty – will work on some parts of the electorate, but will backfire on others, much as the Better Together campaign did in the Scottish referendum.

Last night, Another Europe is Possible held a launch meeting of about a hundred people in central London - with the backing of dozens of MPs, campaigners and academics across the country. It will aim to provide a radical, left wing voice to keep Britain in the EU.

If Britain votes to leave the EU in June, it will give the Right a mandate for a renewed set of attacks on workers’ rights, environmental protections, migrants and freedom of movement. But without an injection of idealism and radicalism,  an In vote will be a mandate for the status quo - at home and in Brussels. In order to seize the real potential of the referendum, the left has to approach the campaign with big ideas and demands. And we have to mobilise.