Is there an ideological sea change occurring at the International Monetary Fund when it comes to redistribution, inequality, and economic growth?

Here are three dangerous economic myths about the world in which we live:

#1  The Rich-Drive-The-Economy Myth: Taxing the rich to give to the poor hurts the economy because it stifles economic growth.

This myth is usually combined with the next myth…

#2  The Austerity-Is-Needed-To-Return-Growth Myth: In today’s economic climate, growth requires cutting government spending, even to education, healthcare, and other social services.

And, finally, this ‘nugget’ of received wisdom….

#3  The Inequality-Is-Benign Myth: The growth of extreme economic inequality around the world today is tolerable because more people are escaping poverty than ever before.

These myths undergird the austerity programs many countries turned toward to address the fallout of the economic crisis. Together, they rationalize: raising taxes on poor and middle class people; giving tax breaks and subsidies to the wealthy; and slashing social spending to reduce deficits – all in an attempt to get growth moving.

Thankfully, a discussion paper released by the International Monetary Fund (IMF) yesterday, “Redistribution, Inequality, and Growth,” debunks these myths, and makes the economic case for combating extreme inequality. The report draws two conclusions that buck mainstream economics dogma:

1) Lower economic inequality drives faster and more durable growth.

and…

2) The effects of redistribution, on average, are actually pro-growth. In fact, the authors find that redistribution only hurts growth in extreme cases.

What can governments and world leaders draw from this report? First, lowering extreme inequality is sound economic policy. As the author’s argued in an earlier IMF working paper on inequality, extreme inequality stunts long-term growth spells. So, if countries are serious about expanding growth, they must become serious about reducing extreme inequality. Second, redistributing wealth through taxation does not harm growth. In fact, it’s good for growth because it reduces inequality, which, as their first argument suggests, has a pro-growth effect. Therefore, from the IMF’s analysis, we can propose a sort of virtuous circle among wealth redistribution, lower inequality, and longer economic growth episodes.

Today’s report builds on other papers released by the IMF recently, suggesting there’s an ideological sea change occurring at the Fund concerning the linkages among redistribution, inequality, and growth. For instance, late last year the research department of the IMF released a working paper demonstrating that ‘fiscal consolidation’ (a fancy word for austerity) increases inequality in both the short and medium term.

If it sounds like I have a crush on the IMF’s Managing Director, Christine Lagarde, today, it’s because she can’t get enough of Oxfam’s recent inequality research. In multiple forums, Lagard has invoked Oxfam’s finding that the richest 85 people in the world hold the same wealth as the bottom half of humanity, and that nearly half the world’s wealth is owned by only 1%.