Not totally off the wall, given that states already will pursue you about income tax that you owe if you leave the state. If the tax were framed as accruing an

Not totally off the wall, given that states already will pursue you about income tax that you owe if you leave the state. If the tax were framed as accruing an obligation that is paid off in installments over the next 10 years, then presumably it would pass muster than an individual would owe for the next 9 years after having spent a year in California, even if they then went elsewhere. I don't know how such a tax would be written that it didn't somehow overlap though. Perhaps imposing a yearly tax that is "0.4% of wealth each year over the next 10 years" but capping the total applicable wealth tax payable each year to "0.4%"? This would be a really weird looking law...