[jltsiren]

> The bottom clawback rates apply to a smaller part of the population, that can escape them simply by earning more than the UBI breakeven point.

That's not true. One of the issues any serious UBI proposal needs to face are the increasing demands of the labor market. A couple of generations ago, there were still plenty of opportunities for people who had little to offer beyond a pair of hands and some work ethic. Today not so much.

The bottom end of the labor market consists of a nontrivial number of people who are not productive enough to earn a living wage. But there are still societal benefits from having them work for living, instead of being passive welfare recipients or turning to crime. To make that happen, even a low wage should increase the net income significantly above UBI.