Thank you very much for that question, which is a very challenging and difficult one. I agree completely.
The complexity of the tax system gives rise to opportunities for tax planning. At least some of my proposals are motivated by removing opportunities for tax planning—tax planning used in the pejorative sense, perhaps, of tax avoidance. For example, the suggestion that we might want to eliminate preferential taxation of capital gains is largely motivated by the fact that the capital gains exemption gives rise to a lot of tax planning, and not just stock options but tax planning more generally, where people try to convert earnings into capital gains.
So I think base broadening on the one hand does tend to reduce complexity and serves a basic purpose. On the other hand, complexity is in some sense hard to avoid.
Whenever you put a special measure into the tax system for a particular purpose.... For example, the small business deduction has good reasons for existing—to encourage small firms that are engaged in highly risky activities to take those risks, and not punish them for doing it by taxing them at higher rate in the event that their business is successful. So, I'm a strong believer in the small business tax rate.
But, at the same time, you have to worry about the fact that people who are not really engaged in risky enterprises can take advantage of the small business tax rate. I gave an example in my notes. I apologize to members of the committee who don't have a copy of my notes. I didn't get a chance to do them early enough to translate them. One of the things I was proposing in these notes was to reduce advantages that certain groups might have in taking advantage of the small business deduction, for example, professionals incorporating mainly for the reason of paying a low business tax rate and holding their earnings there to avoid personal taxes. There have been some recent studies that have suggested there is a large amount of tax leakage that occurs because of that.
I guess what I'm saying is that simplicity is one thing, but whenever you introduce measures that are designed to fulfill a particular purpose, they themselves give rise to complexities that you then have to turn around and try to close off.