Also, FWIW, I think it would be better to impose a wealth tax in place of income tax, as much as possible, rather than add the wealth tax on top. Income taxes are fundamentally unfair to people with high healthcare expenses, children in college, etc.
A common objection to wealth taxes is the difficulty of tracing assets. But in the Muslim world, for example, a 2.5% tax on wealth was collected more than a thousand years ago, and I would imagine most rational, even moderately wealthy people today keep most of their money with financial institutions, making the government’s job much easier than it was in the past. And the danger of people hiding their wealth in diamonds, paintings, yachts, etc. could easily be avoided with a tax on luxury goods.