True, range would be from 1.5% to 5.0% tax-free. However, what is more interesting is his choice of putting the bulk of assets into virtually risk-free tax-free municipal bond account as opposed to regular non-tax-beneficial account is very telling, as that also separates it from lumping regular interest income together with earnings income which may have either put him into higher bracket or would reduce the bulk of interest income overall on the after-tax basis.
Also, goes to show that raising marginal income tax on richest will not do diddley squat to raise the revenue to the treasury as the super-rich do not have to take income in unfavorable years or take them as ordinary income (hence, $1 a year salaries etc.) - that is only for show and exercising power and control of government micromanagement, while creating more hurdles and making it more difficult for middle class to grow richer.
Raising investment tax rates will encourage risk aversion. Muni bond investments may be necessary but tax policy that favors them to avoid confiscatory tax rates will lead to slow growth and less tax revenue. In addition, high investment tax rates will lead to prolifigate state and local spending because of easy credit access. Tax revenue and growth will also decline because wealthy investors will invest in other parts of the world with less penalty for risk taking.
The rat vision is a static economy controlled by rat fiat. The rats want to determine investment dollar flows. Everyone except corporate management will be unionized with almost continuous labor unrest. Rat policy will increase labor costs, lower employment, and increase welfare recepients. The future looks like France except France has a leader who wants to make France look less like France.
The rats look like they want a war on economic freedom. The prospects look grim for higher living standards.