bada bing
Full time employment: Posting here.
I can't think of any economist (other than Laffer) who thinks we're currently at the peak or on the right side of the Laffer curve. The Chicago Booth school gets a diverse panel of economists to respond to questions like this.
http://www.igmchicago.org/surveys/tax-reform-2
Only 2% of them voted that the recent tax bill would raise GDP in the long run. "Raise enough that the tax receipts on the increase will more than offset the loss in revenue from lower rates" wasn't asked, but it's a higher bar to clear.
People who look at the incentives will differentiate between rates (which you mention) and targeted deductions in the "tax expenditures". We might argue that a lower rate would cause some workers to try to work harder, it's hard to see how eliminating the deduction for home mortgages or religious contributions would do that.
The Economist predictions for the tax cuts under Reagan were also nearly universally negative, and yet the result was much greater tax receipts. I wasn't old enough to be involved in the JFK economy, but the results are a matter of record. To be fair, the Reagan experience was also an inflection point in deficit spending which has continued mostly unabated since. It is too early to see what the result will be of the current tax cuts or if they will persist long enough to tell.
It isn't just incentives to work more that matter or even that that is the major effect. "Incentive to work" is a gross simplification of how taxes influence economic activity, sparing of private sector capital is the major mode . It wouldn't seem to matter how that money stays. Either a marginal rate cut or a top line deduction accomplish the same sparing effect. It would be more direct and simple to eliminate "tax expenditures" and just lower marginal rates to compensate.
It is interesting that the majority of this thread's content is about behaviors that "abuse" subsidies or avoid taxes and the idea that tax rates are a simple 1:1 ratio with receipts is still held.
The old adage of "You get more of what you subsidize and less of what you tax" is one of the most basic and powerful principles and important to repeat often.
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