awm, on 2011-May-25, 16:17, said:
The net effect would be that AMT would no longer be a concern for most Americans in the middle to upper-middle class. Most who are paying AMT would get a tax cut because of the increased exemption and lower rate. However, the revised AMT would make sure that the very wealthy still have to pay at least the 25% marginal percentage rate that most working people pay -- no more of this nonsense where Warren Buffett pays a lower rate than his secretary. This would restore the AMT to what it was meant to do, might actually increase revenues (by raising taxes on some very wealthy individuals who pay at the 15% capital gains rate), and cuts taxes for the majority while simplifying the tax code. Note that this is also fairly similar to suggestions made by the bipartisan deficit commission (i.e. eliminate deductions, tax capital gains as income, cut rates) albeit only applying to the AMT.
The warren buffet comments are a bit disingenuous. One of the main reasons that capital gains should be lower than top rate income is that the value of one "capital" is not adjusted for inflation*. If I buy a share that `holds its value' by which I mean that it rises exactly in line with inflation (accepting there is some uncertainty about what inflation even means in this context), then when sell it I will pay capital gains on the change in nominal value despite the fact that by construction I have not made an real "capital gain"**. Given that dividends are generally taxed as income*, you actually have to do really quite well for the broadening of the taxable base during inflation not to increase the marginal tax rate of your capital gains above 25%, which is about how it should be.
To illustrate, suppose that I take an investment of £1000, and it grows 10% in nominal value in one year with inflation %5, then I sell it, then I have to pay 15% on $100=£15, but my `real gain` (ie above inflation) was only $50, so in reality my `tax rate' was 30% of my real gains. Thus in order to pay "only" 25% tax, my investments real gains need to be more than twice as much as inflation, the difficulty of which varies strongly with inflationary expectations.
I think it would be a serious error to bring capital gains tax rates in-line with higher rate tax rates for this exact reason. Exactly how much lower they should be is the provision of economists, and depends on the returns one can generate etc, and would overall lead to a significant decrease in investment.
*= I am assuming that american tax is similar to uk tax in this regard, but I think it is.
**= in Britain one can sometimes get around this by realising a loss in the same tax period as your gain and you can offset this gain against your loss and only pay tax on the net gain. I have no idea if this applies in other tax jurisdictions.
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