Let's talk about supply side economics

First of all, let’s define it:

The theory has been desired and implemented by Republicans in America since Reaganomics in the early '80s and it’s principles are still at work in states such as Wisconsin, Kansas and North Carolina (where results have not been very good) and in fact still seems to be a major part of what Republicans hope to achieve in 2016:

With all due respect to Laffer, we’ve been trying it in various forms in the country and the state for over four decades now! When is that wealth supposed to trickle down as it was promised to?

I, and most economists, don’t think it will. Thomas Piketty’s best-selling Capital in the Twenty-First Century took it to task: “The decrease in the top marginal income tax rate led to an explosion of very high incomes, which then increased the political influence of the beneficiaries of the change in the tax laws, who had an interest in keeping top tax rates low or even decreasing them further and who could use their windfall to finance political parties, pressure groups, and think tanks.”

His conclusion: "In contrast to what many people in Britain and the United States believe, the true figures on growth (as best one can judge from official national accounts data) show that Britain and the United States have not grown any more rapidly since 1980 than Germany, France, Japan, Denmark, or Sweden. In other words, the reduction of top marginal income tax rates and the rise of top incomes do not seem to have stimulated productivity (contrary to the predictions of supply-side theory) or at any rate did not stimulate productivity enough to be statistically detectable at the macro level.”

Four decades of this economic policy has shown us that the wealthy do not share their savings from paying taxes and following regulations: They hoard billions of dollars, they pay themselves increasingly outlandish salaries while workers income remain flat, they hide money overseas and generally do anything but allow it to trickle down through expansion to their work forces, more money in the hands of their employees or cheaper products and services for Americans.

So let’s talk about supply side economics. Is it as big if a failure as it seems? If it is (or even if whatever benefits it may cause the economy are outweighed by negatives) why are the Republicans still listening to the beating drum by an increasingly smaller number of economists that it works? And what can the Democrats do to counter this?

There is more to supply-side economics than simply top marginal tax rates. In fact, according to your very own cite, supply-side policy reccomendations involve lowering marginal tax rates across the board and reducing regulation. You’ve chosen to focus on less than half of supply-side policies. I have no problem debating Reaganomics or top marginal tax rates, but this thread is mislabeled.

What reason have you to think that deregulation would help the economy expand?

Because regulation is a ban on a type of mutually beneficial transaction, and its been well established that more trade generally leads to better outcomes. Now, regulation is often enacted to prevent negative externalities or market failures, so it’s certainly possible for regulation to improve outcomes. But I don’t have enough faith in the competence of government to believe that the regulation we have right now is perfect, and thus it is possible for deregulation to be economically beneficial.

Supply-side economics:

Demand-side economics:

The missing crux of the op is the fact that supply side economics is not meant to work as an independent economic theory, the true goal is to provide a cognitive framework that justifies strengthening the plutocracy and oligarchs. You can’t just say ‘let’s give more power and wealth to the top’ so you have to invent a philosophy that convinces the bottom 99.9% that their interests are best served by serving the interests of the 0.01%. If the economy gets better, that is because supply side works. If it gets worse, that means it would’ve gotten even worse without supply side. Win-win no matter what the economy does.

I’m on my phone but I’ve seen at least one paper finding supply side is about the least effective investment to create jobs and gdp.

Doesn’t matter though.

Support for deregulation is different from support for the optimization of existing regulations, something I think you’d find broad support for (in theory, anyhow.) Those who actively support broad deregulation downplay the possibility of negative externalities, and often have a naive view of players in the market. The example of Greenspan expressing surprise that people in the financial sector were greedy is a perfect example. Another is the strong libertarian who says that because he would research the safety of drugs everyone would, so government regulation of drugs is unnecessary.

I did once hear a Libertarian argue that the FDA should remain in place, but only as a labeling agency, and if you’re rash enough to take something without the FDA seal of approval that’s your problem.

Harping on a supposedly lack of the deregulation is a red herring.

First of all, there has been deregulation. Reagan notoriously deregulated, as are many of the governors I mentioned. Hell, this very second Scott Walker is making Wisconsin a right to work state, ostensibly to boost their flagging economy.

But even if you take the view that there were still too many regulations, the fact is lowering tax cuts and what deregulation did occur did in fact put a lot more money in the hands of corporations and the few people who lead them.

I pointed out there is no shortage of money at the top. That is the point of supply side economics. But it’s not trickling down.

Which, one is uncharitably tempted to suspect, was the whole and only point all along . . .

You see, if you reduce all the marginal tax rates you have this problem of getting enough money for government. Yes, I know the theory is that this will increase tax revenue, but the smart Bush called it voodoo economics and he was right. Economic expansion does increase revenue, but this has not been correlated to tax reduction.
I understand that for supply siders hollowing out the government is a feature, not a bug.

There is no one who believes in trickle down economics. It is 100% a straw man. What supply side theory says is that government revenue is the same at a 100% tax rate as it is at a 0% rate. Every sane economist agrees with this. This insight forms the basis of neo-liberalism, which states that lower taxes are better for an economy all other things being equal. Neo-liberalism has worked everywhere it has been tried.
The specific criticisms in the OP have no basis in reality. First of all it calls Kansas a public trial. Kansas cut its top rate from 6.45 to 4.8%. In terms of overall tax burden that is a miniscule cut. No economist would expect a large impact of such a small cut. Furthermore income taxes are not the only type of taxes. The Tax foundation which ranks states by how business friendly their taxes are moved Kansas down from the 19th ranked state to the 22nd ranked state. Mostly because of changes to their corporate tax system which made it more complex. Kansas is a bad test for supply side economics. South Dakota would be a better test. It has no state income tax, no personal property tax, no inventory tax, and no inheritance tax. It is ranked second in the business friendliness of their tax. The results are an unemployment rate of 3.0% which is 5.2% lower than the national average.
Secondly, Piketty claims that all the cutting of taxes has meant more power to the wealthy. Twenty five years ago the top federal tax rate in the nation was 28%, the top 1% of income earners paid 25.13% of total income tax paid, and the bottom 50% of earners paid 17.17% of total income tax. Now the top rate is 39.6%, and increase of 41%. The top 1% of earners pays 37% of total income tax and the bottom 50% pays 2.36% of total income taxes. The federal income tax has gotten significantly more progressive, so unless what the rich really want is to pay alot more of the income tax burden, Picketty is dead wrong.
I don’t know how he reckons “true figures” about growth. But if he used GDP growth like the rest of us, he would find that US GDP has grown 160% in the last 25 years, the UK’s GDP has grown 141%, France’s GDP has grown 122%, Sweden’s has grown 120%, Germany’s has grown 110%, and Japan’s has grown 89%. I would say that 160% growth is more rapid than 89%. This is even more impressive when you consider that the US had a much higher starting place so catch up growth models would predict slower growth for the US, all else being equal.

“Supply side economics” is part of a larger Republican narrative that we live in a free society where rich people deserve to be rich by virtue of their greater ingenuity, hard work, entrepreneurship and business acumen. Conversely, if you are poor, then you’re simply a fuckup who didn’t work hard or smart enough.

This narrative is very appealing if you happen to be well off. It allows people to pat themselves on the back that they deserve everything they achieved. And tales of people abusing the welfare system allows us to not feel guilty about helping those who are less fortunate.

And it would be a great system if all the poor people would just walk into the sea or allow themselves to be ground up into Soylant for food or something. But being the selfish people they are, they continue to not die (or at least move to where we can’t see them).
Of course, I don’t know why anyone would consider “trickle down” a good system anyway. If all the wealth is at the top, then it’s only the interests of those at the top that matters.

And yet you maintain your faith in the honesty, integrity and compassion of big business?

Regulation is also a ban on mutually harmful transactions. Such as selling products that injure, defraud or otherwise harm people.

It’s virtually impossible to discuss supply side economics without it turning political. This is especially the case when talking of modern supply side economics. However, we can look at 19th century supply side economics slightly more dispassionately. The evidence suggests it worked. Society as a whole did become richer. Now, opponents may counter 19th century results with valid criticisms of unfairness etc, but evidence does show that between 1800 and 1900 saw an utterly remarkable growth in wealth. A growth that had not been witnessed at any previous time or place in world history. Virtually all of the growth in 19th century wealth resulted from supply side economics.

Perhaps the most obvious example of supply side economics in action; repeal of the Corn Laws in Britain and the subsequent fall in price for consumers.

The important issue about the Laffer curve is both its shape and whether the slope of where we are on it is positive or negative. If it is positive then raising taxes raises revenue. Sure it is clearly negative around 100% taxes but no one wants to go there. All evidence from the past few decades is that we’re in positive slope territory.

[utl=Income Inequality - Inequality.org]Here is a page with a chart showing income share of the top 1%. In 1987 it was somewhere around 13% - but picking dates to compare can lead to cherry picking - I invite people to look for themselves. (It has gotten worse since 2012.) It is very typical for people who whine about how much the rich pay to leave out data on the share of income the rich have.

While it may be true that supply side economics has worked at various points in history, such as in the 19th century or in the early 80’s, it doesn’t mean that it is appropriate at all times, which seems to be the mantra of the Republicans.

If credit is tight, such that it is difficult for businesses to grow and meet demand then supply side economics makes some sense. Given money business owners will invest it to expand their business to meet pent up demand, and the economy grows. However in the current state of affairs, interest rates are low, companies are awash with cash, but they aren’t growing their business because there is no one to buy their products. So they are just sitting on their money waiting for things to change. In this case, giving them more money won’t change anything. What makes more sense is transferring some of this money to the consumer side so that they will be able to buy products and give the business owners a reason to use their pent up cash to expand their business.

link broken, here is the correct one.

The point of government policy should not be to maximize government revenue but to maximize the size of the overall economy. In order to increase revenue via tax cut the deadweight loss of the taxes have to be a multiple of the size of the tax cut. This is unlikely to be the case for most tax cuts but that does not mean that the deadweight losses have not occurred. Whether the slope is positive or negative, damage to the economy is still occuring.

The income share is not determined by the political process but by market process. Tax rates are determined by the political process. What the OP said was that income inequality was leading to a system where the rich hijack the political process to give themselves lower rates and give the tax burden to other people. The actual facts show that the tax rates have gone up for the richest, and down for the poorest. Thus the assertion of the OP is completely groundless.

It’s important to distinguish between sound economic thinking and stupid politicians cherry picking what they like. The wikipedia article says what few economists would dispute: lower barriers to commerce and you’ll get more commerce and everyone is better off.

Republicans took that to mean, “Cut taxes and the growth will be so awesome that revenues will grow!” Um, no.

Keynesian economics is similarly butchered by politicians. They are all about deficit spending in bad times but when good times come they can’t run surpluses because it might hurt the “struggling” recovery. If you believe the politicians, this country has either been in recession or a weak recovery for a good 80% of its history.

“Trickle down” is an excellent example of how physical metaphors can be horribly misleading.

If you conceptualize the rich at the top and the poor at the bottom then it seems intuitively obvious that money flows down and pumping more to the top will improve the overall flow.

But the rich aren’t really “higher” than the poor. That’s just a metaphor. In fact, in economic terms its more accurate to put the rich on the bottom and the poor on the top. Money from the poor and middle class naturally trickles down to the rich. Without proper intervention you wind up with the rich swimming in a huge pool of money at the bottom and and everyone else languishing on the arid slopes above. Good economic policy involves pumping money from the stagnant pool at the bottom back up to the poor people on the peak. That keeps everything flowing and the economy strong and healthy. But it’s hard for people to grasp because they intuitively put the rich on top.