For example: AB 259

Context: https://www.thinkadvisor.com/2024/01/10/wealth-tax-bill-gets-hearing-in-california/

For resolution purposes, a tax based on a broad measure of a person's or household's assets or net worth (rather than, say, assessment of real property) would be considered a wealth tax. The law creating the tax would need to be signed into law in 2024, but not necessarily become effective in 2024.