Quote from Daal:
One thing that I believe is misunderstood in the economics community is the issue of whether tax cuts pay for themselves. In the short-run I agree that they dont pay for themselves(despite of what supply-siders might claim) but in the long-run if a certain economy wide tax rate gets an economy to growth by 3.5% instead of 3%, eventually the cuts will pay for themselves in the form of higher accumulated revenue growth(say, over the next 30 years)
Even mainstream economists(like Krugmans of the world) accept that too much in taxes wont yield extra revenue as people will find ways to cheat and hide income(plus growth will be hurt, maybe even a recession) and too little might hurt the economy by not allowing the government to run its basic critical functions of enforcing the rule of law, contracts, infrastructure and others. Somewhere between these 2 there is an optimal tax rate that allows both things to occur, so the issue of whether the cuts pay for themselves is WHERE is the optimal rate compared to todays rate, if its bellow, the cut will pay for itself on the long-run because the economy will growth faster over the next 50 years, if its above, a tax hike is actually healthy and necessary