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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What is the Scottish Six and why are people getting so upset about it?

The BBC is launching a new Scottish-produced TV channel. And it's already causing a stooshie. 

At first glance, it should be brilliant news. The BBC’s director general Tony Hall has unveiled a new TV channel for Scotland, due to start broadcasting in 2018. 

It will be called BBC Scotland (a label that already exists, confusingly), and means the creation of 80 new journalism jobs – a boon at a time when the traditional news industry is floundering. While the details are yet to be finalised, it means that a Scottish watcher will be able to turn on the TV at 7pm and flick to a Scottish-produced channel. Crucially, it will have a flagship news programme at 9pm.

The BBC is pumping £19m into the channel and digital developments, as well as another £1.2m for BBC Alba (Scotland’s Gaelic language channel). What’s not to like? 

One thing in particular, according to the Scottish National Party. The announcement of a 9pm news show effectively kills the idea of replacing News at Six. 

Leading the charge for “a Scottish Six” is John Nicolson, the party’s Westminster spokesman for culture, media and sport. A former BBC presenter himself, Nicolson has tried to frame the debate as a practical one. 

“Look at the running order this week,” he told the Today programme:

“You’ll see that the BBC network six o’clock news repeatedly runs leading on an English transport story, an English health story, an English education story. 

“That’s right and proper because of the majority of audience in the UK are English, so absolutely reasonable that English people should want to see and hear English news, but equally reasonable that Scottish people should not want to listen to English news.”

The SNP’s opponents think they spy fake nationalist outrage. The Scottish Conservatives shadow culture secretary Jackson Carlaw declared: “Only they, with their inherent and serial grievance agenda, could find fault with this.” 

The critics have a point. The BBC has become a favourite punch bag for cybernats. It has been accused of everything from doctored editing during the independence referendum to shrinking Scotland on the weather map

Meanwhile, the SNP’s claim to want more coverage of Scottish policies seems rather hollow at a time when at least one journalist claims the party is trying to silence him

As for the BBC, it says the main reason for not scrapping News at Six is simply that it is popular in Scotland already. 

But if the SNP is playing it up, there is no doubt that TV schedules can be annoying north of the border. When I was a kid, at a time when #indyref was only a twinkle in Alex Salmond’s eye, one of my main grievances was that children’s TV was all scheduled to match the English holidays. I’ve migrated to London and BBC iPlayer, but I do feel truly sorry for anyone in Glasgow who has lost half an hour to hearing about Southern Railways. 

Then there's the fact that the Scottish government could do with more scrutiny. 

“I’m at odds with most Labour folk on this, as I’ve long been a strong supporter of a Scottish Six,” Duncan Hothershall, who edits the Scottish website Labour Hame. “I think the lack of a Scotland-centred but internationally focused news programme is one of the factors that has allowed SNP ministers to avoid responsibility for failures.”

Still, he’s not about to complain if that scrutiny happens at nine o’clock instead: “I think the news this morning of a new evening channel with a one hour news programme exactly as the Scottish Six was envisaged is enormously good news.”

Let the reporting begin. 

Julia Rampen is the editor of The Staggers, The New Statesman's online rolling politics blog. She was previously deputy editor at Mirror Money Online and has worked as a financial journalist for several trade magazines.