well, it depends, now doesn't it? Higher capital gains taxes might discourage investment. Higher marginal tax rates might discourage hard work and success also, no? You have to pick one evil to live with.
Far too simplistic, and therefore incorrect.
The relationship between the tax rates and encourage/discouragement is not linear. This is not in dispute.
E.g., you can raise tax rates on income incrementally and often see very little in the way of influence on taxpayer behavior. However, you can reach a point (a certain tax rate %) that will begin to substantially occur. While there is much disagreement among economists, many believe somewhere around 50% you will see a 'tipping point'. (IIRC, some peg it lower, others a bit higher.) The tipping point will different between wage income and cap gains. Cap gains can easily be deferred until a more favorable rate returns. Wage type income, not at all unless you can afford to be unemployed, or choose to forgo additional/marginal income. You cannot defer it, you can just lose/forgo it.
And there is no "choose one or the other'. They are two different types of income, with different characteristics.
I am writing this post in the wake of the Bain Capital ads. Bain was assisted in wrecking private companies by favorable capital gains IMO. lower cap. gains would have encouraged selling to Bain and it would have left Bain with more money to again "invest and wreck."
Bain Capital didn't "wreck" private companies. First there are two elements of Bain Capitals' business:
1. Venture Capital. Sometimes they invested in "private companies" (meaning they were closely owned corps), many other times they would be public companies (just not NYSE or NASDAQ). Depends on at what level did Bain enter (e.g., seed money level v mezzanine level). Here Bain would be providing capital to a young promising company. Wrecking these companies does nothing for Bain, they would lose their investment.
2. Private equity. Here they invest (sometimes sufficiently to gain control, sometimes not) in failing, but typically more mature companies, with the objective of turning them around for a profit. But I've never seen an instance where their objective was "wrecking" them. In the first place, that's clearly counter-intuitive. Secondly, the practice of wrecking for profit is an entirely different play. Under this method there is no attempt to turn around the company. Instead, they often want to break it up and sell off parts. The 'sum of the parts is greater than whole" thing. E.g., back in the 80's when Walt Disney Co. was doing poorly Kirk Kirkorian (sp?) attempted a hostile takeover of Disney with the intention of breaking it up and selling off the pieces (e.g., real estate etc) because their value was higher than all the stock combined. I think Saul Steinburg (sp?) tried the same thing.
BTW: It's highly questionable how much cap gain rates had to do with this. This was done (at least as far as Romney is concerned) before the Bush tax cuts. Moreover, Bain took a lot of profit out as dividends which were taxed as ordinary income then (even possibly now because I doubt they meet the definition of "qualified dividends" as required under tax law).
Fern