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.

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The footie is back. Three weeks in and what have we learned so far?

Barcleys, boots and big names... the Prem is back.

Another season, another reason for making whoopee cushions and giving them to Spurs fans to cheer them up during the long winter afternoons ahead. What have we learned so far?

Big names are vital. Just ask the manager of the Man United shop. The arrival of Schneiderlin and Schweinsteiger has done wonders for the sale of repro tops and they’ve run out of letters. Benedict Cumberbatch, please join Carlisle United. They’re desperate for some extra income.

Beards are still in. The whole Prem is bristling with them, the skinniest, weediest player convinced he’s Andrea Pirlo. Even my young friend and neighbour Ed Miliband has grown a beard, according to his holiday snaps. Sign him.

Boots Not always had my best specs on, but here and abroad I detect a new form of bootee creeping in – slightly higher on the ankle, not heavy-plated as in the old days but very light, probably made from the bums of newborn babies.

Barclays Still driving me mad. Now it’s screaming from the perimeter boards that it’s “Championing the true Spirit of the Game”. What the hell does that mean? Thank God this is its last season as proud sponsor of the Prem.

Pitches Some groundsmen have clearly been on the weeds. How else can you explain the Stoke pitch suddenly having concentric circles, while Southampton and Portsmouth have acquired tartan stripes? Go easy on the mowers, chaps. Footballers find it hard enough to pass in straight lines.

Strips Have you seen the Everton third kit top? Like a cheap market-stall T-shirt, but the colour, my dears, the colour is gorgeous – it’s Thames green. Yes, the very same we painted our front door back in the Seventies. The whole street copied, then le toot middle classes everywhere.

Scott Spedding Which international team do you think he plays for? I switched on the telly to find it was rugby, heard his name and thought, goodo, must be Scotland, come on, Scotland. Turned out to be the England-France game. Hmm, must be a member of that famous Cumbrian family, the Speddings from Mirehouse, where Tennyson imagined King Arthur’s Excalibur coming out the lake. Blow me, Scott Spedding turns out to be a Frenchman. Though he only acquired French citizenship last year, having been born and bred in South Africa. What’s in a name, eh?

Footballers are just so last season. Wayne Rooney and Harry Kane can’t score. The really good ones won’t come here – all we get is the crocks, the elderly, the bench-warmers, yet still we look to them to be our saviour. Oh my God, let’s hope we sign Falcao, he’s a genius, will make all the difference, so prayed all the Man United fans. Hold on: Chelsea fans. I’ve forgotten now where he went. They seek him here, they seek him there, is he alive or on the stairs, who feckin’ cares?

John Stones of Everton – brilliant season so far, now he is a genius, the solution to all of Chelsea’s problems, the heir to John Terry, captain of England for decades. Once he gets out of short trousers and learns to tie his own laces . . .

Managers are the real interest. So refreshing to have three young British managers in the Prem – Alex Neil at Norwich (34), Eddie Howe at Bournemouth (37) and that old hand at Swansea, Garry Monk, (36). Young Master Howe looks like a ball boy. Or a tea boy.

Mourinho is, of course, the main attraction. He has given us the best start to any of his seasons on this planet. Can you ever take your eyes off him? That handsome hooded look, that sarcastic sneer, the imperious hand in the air – and in his hair – all those languages, he’s so clearly brilliant, and yet, like many clever people, often lacking in common sense. How could he come down so heavily on Eva Carneiro, his Chelsea doctor? Just because you’re losing? Yes, José has been the best fun so far – plus Chelsea’s poor start. God, please don’t let him fall out with Abramovich. José, we need you.

Hunter Davies is a journalist, broadcaster and profilic author perhaps best known for writing about the Beatles. He is an ardent Tottenham fan and writes a regular column on football for the New Statesman.

This article first appeared in the 27 August 2015 issue of the New Statesman, Isis and the new barbarism