In the US, economic growth does not seem so hard to achieve. If you look at the GDP of the United States, it seems to just grow and grow. Even the multiple crises along the way have only had minor effects. The graphs of other countries look far more bumpy and occasionally stagnant, which would suggest that they have real issues with getting the economy going on. But in the US, economic growth does not seem to be a problem.

Here's the US GDP, followed by e.g. the GDP of Denmark.

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These figures would suggest that economic growth is not a problem in the USA. And yet, as an outsider, I often hear in particular conservatives but also a lot of libertarian commentators constantly say that taxes need to be cut so that the economy can grow and so we can have jobs, jobs, jobs, etc.

But why are those things even necessary? How much more economic growth can you have? Even the unemployment rate is at 4 %, which is about as low as it has ever gotten in the US, at least for the past many decades.

To sum it up, my question is, why is cutting taxes (as was recently done), boosting the economy, and creating jobs such an important political agenda in the US, when it seems like they are already doing perfectly fine at those things? Does it not make more sense to keep the current level of taxes, given how they aren't really hurting the economy, and in turn using those taxes to fix other more prominent issues that plague the US society, such as low social mobility and inequality? The argument that taxes will prevent economic growth doesn't really apply when all data suggests that the current level of taxes are perfectly suitable to sustain economic growth and a low unemployment rate, so why was there a need for a tax cut?

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    You have two questions in your title, which makes it unclear whether your question is really about economic growth or tax cuts. Please pick one of these two questions, and remove the other.
    – Joe C
    Feb 28, 2018 at 21:44
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    @JoeC: the actual question seems to be OP trying to understand how the second feeds into the first. Feb 28, 2018 at 21:45
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    Be careful with those graphs, they are misleading you. One major problem is that they show the GDP in nominal dollars. First, this means that any country using a different currency will look unfavourable in comparison to the USA, because currency rates tend to move quickly and heavily, but these swings aren’t felt particularly in the internal economy of any country. A lot of the bumpiness in the Denmark graph is due to that. (A graph “US GDP in DKK” would look similarly bumpy.) Second, a lot of the apparent growth is due to inflation. In particular, heavy US recessions in the 1970s … (cont.)
    – chirlu
    Mar 1, 2018 at 8:37
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    … are masked by this, because inflation was high at the same time (“stagflation”). Because of this, it’s better to look at the “real GDP” graphs that your source also provides. However, another big issue even with those is that the human eye isn’t particularly sensitive to the rate of change in such a graph. What looks like a tiny dent in the curve may have been a major recession causing a lot of headache to a lot of people.
    – chirlu
    Mar 1, 2018 at 8:38
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    These are at least two questions in one. Please ask them separately. Mar 1, 2018 at 11:29

7 Answers 7


There are at least two problems with your question's premises.

The first is that, there's no causation link between lower taxes and economic growth except in the fantasy world in which some ideologists live. So-called supply-side economics just doesn't work - except, perhaps, when you're a small tax haven. Everywhere else, demand is driving the economy, and the latter requires (publicly funded) infrastructure. Because, you know, paying workers well ensures they can eventually afford a model-T like in the good old days of Ford, and roads to drive them on tend to get built using taxpayer money.

The other is that "it seems like they are already doing perfectly fine at those things" is incorrect. While the unemployment figures are low on paper, the labor participation rate is also low. Put another way, part of the workforce is just no longer bothering to look for a job. The real unemployment rate in the US (and elsewhere) is higher than official figures may suggest.

The need for Trump's tax cuts was ideological. Reagan once quipped: "Government's view of the economy could be summed up in a few short phrases: If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it." Today's Republicans are faithful to the latter mindset and continue to want lower taxes - in spite of structurally deficient infrastructure that, as it happens, requires tax money to maintain.

There's also something to be said about the small government ideology promoted by Republicans and Libertarians. There has been an effort by the latter to sabotage everything government in the US, since the Reagan era or so, in any way they could, to prove the point that government isn't useful. I'd put forward that they've succeeded to a large degree. The party line seems to be: if you can't kill it through legislation, kill it through spending cuts. (The obvious question then, of course, is whether tax cuts lead to spending cuts. But I'll leave that as an exercise to the reader.)

Then again, and to the Republicans' credit, US public unions negotiated, between the end of WW2 to Reagan, a number of benefits that are on track to bankrupt a number of municipalities, counties, and possibly states. So in a sense it's no wonder that parts of the US public are so hostile towards the public sector.

At any rate, the point is that yes, there's no causation link between lowering taxes and having better growth, but the topic is murky because of all of the special interests involved.

As to whether more growth is desirable or indeed feasible in the long term to begin with, I'll differ to Steve Keen (in the comments): "a 2% rate of return from the year dot to now on $1 would yield a ball of gold 1.3km in diameter; 4% gives you a ball of gold 2/3rd the diameter of the sun; and 6% I think returns a ball of gold larger than the Milky Way."

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    According to Forbes, as a general rule, (During the Obama Presidency at least) it's best to assume the real number was double that of the reported government number.
    – hszmv
    Mar 1, 2018 at 18:44
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    @hszmv That's totally bogus. The Obama administration did not manipulate unemployment numbers, and you're going to need a credible source to try to imply that claim. There are 6 unemployment rate statistics (U-1 through U-6). Pick the one that you think is most reflective of true unemployment, and apply it even-handedly for all situations. The highest unemployment rates, U-5 and U-6, include a lot of employed people in them, so I wouldn't go by those unless you are trying to just use the largest number that is most likely to make someone look bad.
    – John
    Mar 19, 2019 at 18:52
  • @John : forbes.com/sites/dandiamond/2013/07/05/…
    – hszmv
    Mar 20, 2019 at 14:45
  • @hszmv Thanks for the source, of course. It basically says that U-6 is a lot higher than U-3, and includes discouraged job seekers. But the thing is, U-4 and U-5 include discouraged workers too. U-6 treats part time workers and underemployed workers the same as unemployed. If you want a real unemployment rate, I think you should stop at U-5, which counts discouraged and marginally attached job seekers, but doesn't count underemployed and part-time workers. Also, like I suggested previously, whichever is your stat of choice, be consistent and use the same stat for all presidents.
    – John
    Mar 20, 2019 at 23:31

As a Dane I have to inform you that comparing these two particular nations is going to create weird results.

Denmark is a small export dependent nation following the ups and downs of global trade. 70% of Danish exports is shipped to other European countries.

The internal domestic market is not enough to keep things moving along when crisis occurs. So we keep expanding and contracting as the economy goes through its cyclic ups and downs. With unemployment benefits managed by the unions and most workers voluntarily paying into the unemployment insurance, the Danish state finances can sort of remain balanced for years even though unemployment sometimes doubles to 10% during global recession periods.

Danish GDP is highly influenced by Container Freight shipping (20% of the global market). So shift in transport activity creates spikes in the GDP without it really influencing the domestic market. The same with oil. Danish companies involved with fossil fuels contributes erratically to Danish GDP, but the wind (and hydro from Norway and Sweden) powered Danish energy market will just keep fumbling along.

So there is two different circumstances for USA and Denmark. Denmark is a tiny sailboat going up and down and sometimes being thrashed by the storms. USA is a massive tanker that moves the waters around it.

  • These are all very interesting factoids about the Danish economy, but it does not actually address the question. Please note that this is a question&answer site. An answer should answer the question that was asked, nothing more and nothing less. For more information about this website, please take the tour and read through the help center.
    – Philipp
    Mar 1, 2018 at 18:57
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    @Philipp I feel this answer is relevant because the OP used a comparison between USA and Denmark as a foundation for the question. If the foundation of the question makes incorrect assumptions, the answers must either make the same assumption and potentially be wrong, or reveal the flaw in the assumption so the question can be restated.
    – Wes H
    Mar 1, 2018 at 19:07
  • @WesH But this comparison between Denmark and the US is not even that relevant to the question.
    – Philipp
    Mar 1, 2018 at 19:08

Your assumption is flawed.

GDP growth in the USA is bumpier than in Denmark, if you look at GDP of both nations in Danish Krona. The bumps you're analyzing are the USD/DKK exchange rate.

As to why politicians promise economic growth: It's promising wealth to individuals, without actually promising wealth. It's selling hope of getting a raise, without being accountable if people don't actually get a raise. As a politician, that's a no brainer.

As to why economic growth happens steadily and pretty much on its own, unless you crash the economy: Inflation, increased automation, and growing population.

  • In addition to this. If we assume that the economy grows pretty much whatever you do then any leader can claim that they have done a good job based on economic growth ("highest GDP ever! I'm doing a great job!"). So not only are they implying that they will help out everyone, they are also likely to be able to claim success.
    – Eric Nolan
    Mar 20, 2019 at 17:38

I am not very sure about the situation in the US, as it has a bit of a different social state implementation compared to the European countries. But I think that it has a lot to do with the way social systems are constructed. If you have a retirement system that is not based on saving somewhere the contributions (or investing them) but on redistribution now to the elders of the tax money and promising the now active people that their pension will be paid in the future by the then active people -which is the case in many EU countries- then you need an ever expanding population and GDP growth.

Same if you create treasury bonds to finance some spending the state does now. You need then growth over the next years so that you can tax more (if the GDP increases then the same percent of taxes generate more money) so that you can pay the interest on the treasury bonds.

  • You might be interested in figures like debt to gdp ratio, interest on that debt or the worker to beneficiary ratio.
    – user9389
    Mar 1, 2018 at 23:35
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    Note that the argument about retirement doesn't depend on whether the system is redistribution or capitalization. Even in a capitalization system, the bounds or investments you have accumulated with your contributions will or will not suffice to pay for your retirement depending on the GDP at the time you're retired.
    – Evargalo
    Mar 2, 2018 at 10:04
  • @Evargalo that is partly true, but I said it as capitalization is usually only on private sector managed systems, which are not really the problem of politicians. But redistribution systems are only political. Why i say it is only partly true is because you theoretically save money for a much longer period than the one in which you will use the money, so if you have a high enough percentage of the income saved you will have enough with very small ROI, if at the same time there is no high inflation. Mar 2, 2018 at 21:56
  1. Economic growth is a buzzword. Politicians use buzzwords to get people's attention. An increase in economic growth should always be a good thing so it is a safe thing for politicians to espouse. ALL politicians support economic growth, they just have a different way of pursuing it, just like all people support eating food, we just have different perspective of what it should be. I think a candidate using economic growth as a primary platform can be safely ignored.

  2. The US tax code is incredibly complex with loopholes granted for all kinds of stuff, requiring expert, dedicated knowledge. To help understand how complex it is, not only is accounting an expansive career field, but Tax Law is an entire , lucrative, field of law on its own, focused on finding loopholes to avoid paying taxes.

Most of the changes were to close loopholes (there a far too many remaining), others were to reduce state control on the federal revenue stream. For most people, the difference between a loophole and a tax break is whether they can personally claim it.

There is a tipping point in which high taxes reduce economic incentive, in which people don't see a significant return on their labor and become complacent about the quality/quantity of their work (e.g. USSR), thus reducing GDP. However, I don't think the US is close to that point and so taxes and economic growth are not closely linked.

High taxes require the government to be responsible for services. Low taxes require private industry to fund services. The balance between public and private funding can be endlessly argued.

In my opinion, I feel the private sector can do a better job in the large majority of fields than the government. In segments that have near universal political approval (Fire Departments) , significant investment requirements (Highways) , or serious consequences for the populace as a whole (Disaster Recovery), I feel the government is best suited to owning the service. In other areas, I feel the government should regulate, but not participate, as the private industry can more effectively do the job (Elementary Education). In yet other areas, I think it should be left to private industry to determine what quality/quantity of services are provided.

Everyone has their own priorities and preferences for what services are needed, and that is one of the things that makes the United States a great, but very diverse, country.

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    Some links and quotes to support this would go a long way to making this a good answer.
    – Machavity
    Mar 1, 2018 at 17:16
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    re: 2, though the bill may have closed some loopholes, it opened up a whole bunch as well. I don't think the bill actually delivered on reducing loopholes at all: slate.com/business/2017/12/…
    – user1530
    Mar 2, 2018 at 15:30
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    @paulj That math would only check out if the top marginal tax rate was 75% and if this worker were already near the border of the top marginal tax bracket. Progressives are proposing a 70% top marginal tax rate for income above like $25 million. So, you're talking about someone making $25 million already, who would need to work twice as many hours to double their gross income. Only problem is virtually anyone who makes above $25 million is doing so by way of stakeholding, and isn't even really working to earn their income. Those people can't even work twice as many hours.
    – John
    Mar 19, 2019 at 19:49
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    @paulj Conversely, under our present tax code, if someone were already at the borderline of the top bracket, making $500,000, and they worked twice as many hours, their extra income would only get taxed at a rate of 37%, not 75%. Not to mention that the next lower marginal tax rate below 37% is 35%, so they're really only getting taxed at a rate that is 2% higher than their previous rate. Also, doctors make an average of $330k/year and work like 59.6 hours/week. There is no such thing as a doctor who wishes they could work 120 hours/week.
    – John
    Mar 19, 2019 at 19:51
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    @paulj as most of Laffer's curve fans, you (cleverly) forget about the marginal utility theory. You assume that all the money is equal, and that is simply not true for most sane people. If I need to work 16 hours a day to have proper food, home and other necessities, I will work 16 hours a day. If I can cover those and other expenses with a 8 hour work day (and if that is my case, probably my standard for "proper" would be way higher), maybe I will decide that I am not going to work 16 hours a day even if that would allow me to buy a yacht, because I do not care so much about having one.
    – SJuan76
    Mar 20, 2019 at 6:27

The first thing to keep in mind, in the US, politics is about what the politician can sell. "That guy did a terrible job, I will make things great". Nobody votes for "I'll keep things steady", people vote for promises, at least, generally speaking. People also vote for competance, intelligence, policy, it's not just promises, but promises are a big part of running for and wining government office.

There's also an idealogy in the US, that some people choose to believe, others don't, that tax cuts = economic growth. It happened under Reagan's tax cuts where a stagflation crisis turned into a robust economy, but there were extenuating circumstances and it was a different kind of tax cut than is possible now as Reagan went from over 50% to under. All that's possible now is different shades of under 50% - so it's not possible to re-create the Reagan taxcut effect today but that doesn't stop politicians from making promises.

We had strong economic growth under Clinton with tax increases, but the (somewhat flawed) argument that we must cut taxes for growth is still used a LOT. There's a percentage of voters in the US, who believe in tax cuts no matter what, and at times, the results have been disastrous. But the argument is still made with regularity, to the point where it's a key voting issue pretty much every election.

Also, consider the economics of the Obama years. (note - this isn't just Obama. No president really controls the economy, though they can influence it), but during his 8 years, initial recovery from a bad recession then steady but unspectacular growth and many people never felt the recovery. What your GDP chart doesn't show is how people felt about the economy, and that's important.

So, despite your chart showing steady growth, sentiment was much more mixed. You have the "cut taxes" voters and you have the "We want better jobs and a stronger economy" voters. Voters who expect things to be better than they are. So there is a strong desire among many voters to have the good jobs that a strong economy provides. If you lived in the US (I'm guessing by your question you don't) you couldn't miss those 2 voting blocks, the tax cut voters and the "bring back a strong economy" voters, generally the working class.

Some people say that one of the reasons Hillary lost was that she didn't reach out to the working class, and they didn't support her on election day.


I'm going to try answer the main question you ask which is why politicians seem to care so much about economic growth, especially in the US, when the economy seems to be doing fine.

I think a lot of people talk about the phrase being a buzzword used by politicians which is able to show that they are effective at making the country flourish and work. To get into a bit more detail about why that's more important you have to understand the relationship between the government and the people. People see the government as being accountable to them, they vote it in and they do that for reasons that the party has said they will fulfill. So in the cases where they fail to do that you lose buy in from the people who voted you in so they are more likely to stop supporting you.

The reason why economic growth is such a key example of this in America is because of 2 main reasons.

  1. The 2008 economic recession and all other recessions hit the US incredibly hard and it is still fresh in a lot of peoples memories. This is something they want to desperately avoid especially with all the fear mongering around it. This means that even if the economy is doing well that's not enough since a recession can still occur in a function economy. The way to prevent that is to have continual growth since stagnation is one of the causes and problems with recessions.

  2. One of the main characteristics that America holds close to its identity is its economic domination. This was the main reason they became a superpower. When their industry after the first world war boomed and shot them up. So to show that this is alive when you are in government is to fulfill the patriotic narrative of american continued supremacy.

A prime example of this occurring in other nation to an even more extreme level is China. In China one of the main ways the current ruling party keeps control and limits unrest is by fulfilling their main promise of keeping economic growth above 10% every year. That's why it is such a major thing that they have been failing this in current years because it's a violation of the contract they have with their people.

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