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stinkcat_14
Guest
I don’t think I was clear enough in what I was trying to say, what I was trying to say is that while the change in the tax law may have some effect on economic behavior, the effect is relatively small. For example, consider the effect of the tax rate on behavior in the labor market. Obviously if the tax rate is very high, there will be little incentive to work harder. For example, in the early 1960’s the top marginal tax rate was 91%. If I am in that tax bracket, I will probably not do much to work extra because most of the money will go to the government. Those who argue that we are on the downward sloping part of the Laffer curve, need to argue that the change in the tax laws caused such a large change in behavior that the increase in income earned offset the loss in revenue due to the lower tax rates. In the labor market, the biggest change in behavior due to changes in tax rates has been on the labor supply of married women. Since households are taxed on their joint income, the second entrant into the labor market is tax at the households marginal tax rate. So if tax rates are too high, some of these women will choose to stay home rather than work, because the after tax gain is too little. We clearly see this effect happening in the 1980’s where the top tax rate was cut from 70% to 28% and the labor supply of married women increased from 49.8% in 1970 to 58.4% in 1990.The government report you posted earlier indicated they agree with a tax cut changing behavior. Their issues were 1) the tax cut was not combined with reasonable spending cuts and 2) The changed behavior would not overcome increased spending. Remember if the behavior did not change the tax collection would drop exactly equal to rate of tax cut. Your own data shows the tax cut did not result in a freeze in revenue if you will review the data in post #70 tax collections by the IRS increase 18 out of 20 years
On the other hand, in 2000 the labor force participation rate for married women was 61.1% and in 2005 it was 60.7%. So in this case, it actually went down.
The article I cited assumes behavioral changes due to the tax rate change, but they admit that we really have no clue as to the magnitude of the effects.
In the chart you cited, tax revenues did go up over time, however we have to keep in mind that tax revenues went up in the 90’s when the Clinton administration raised taxes. If we are on the downward sloping part of the Laffer curve, that never would have happened. Also, tax collections go up for many reasons, so those who argue that we can cut tax rates and raise revenue have the burden of showing that the lower tax rates affected economic behavior in a significantly large way. In my opinion, nobody has done that here.