In Germany the top marginal rate you can get with a sufficient unlucky construction is over 80% if you are already at the top rate of income tax, but below the cap of social insurances. The capital gains tax then however would be higher than here. The SPD gov reduced the max income tax rate from 56% to 43%. However the current Merkel gov increased the rate again to 47.5% (but only for people well above the cap of social security), despite Merkel promised lower income taxes before the election. But if I look to last years budget surplus, I would say we can afford lower income taxes than in the US. We don't have to finance an inflated stock of state employees and the fanciest high tech stuff for our military as the US seems to have to. And Obama will not cut the military budget by much. Der Amerikaner ist die Orchidee unter den MenschenVolker Pispers
How is it not helpful. As you point out, the SS surplus is fake since it is folded into the general budget. That means that the idea that the SS tax is not a tax but an insurance payment is a fiction. So a capped SS tax is simply a way of making the tax system regressive.
I thought it would not be helpful, because it covers that the revenue which was intended to spend on all the other stuff is not enough for all the other stuff. Some people even think the war in Iraq was only possible, because of the deception of the real shape of budget. The right thing in my opinion would be to announce the deficit numbers independent of the SS fund. In Europe the retirement fonds are as well part of the unified budget deficit numbers. But in Europe these funds have deficits and capital based retirement is done entirely in 401(k) similar plans. Der Amerikaner ist die Orchidee unter den MenschenVolker Pispers