Absolutely it's different from taxing income; it demands liquidity. I.e. an entrepreneur with a billion dollars in stock has a net worth made mostly of "paper

Absolutely it's different from taxing income; it demands liquidity. I.e. an entrepreneur with a billion dollars in stock has a net worth made mostly of "paper gains". Very little of that is likely liquid. By letting the money continue to work as an investment, it can keep growing and producing returns. Effectively adding liquidity requirements for private investment would be devastating. > doesn't the USA have property taxation for land That's state-level, not federal; the constitution gives the feds no power to confiscate capital. More importantly, it's a direct fifth amendment violation: > nor shall private property be taken for public use, without just compensation. Not only is there no enumerated power (enough to make it unconstitutional), there's a specific prohibition. That said, I'm not a huge property tax fan, either. I'd rather the gov't just bill each citizen for services used as an average, at least at the federal level.