Unless their spouse is still alive. In the US, assets' cost bases are reset when a spouse dies. That is the main way that rich people avoid capital gains taxes. I'd much prefer simply stopping that cost basis reset instead of implementing a wealth tax.
Neither of these would really work against the people you actually want it to work against.
If you don't have a basis reset then they just do a transaction that has the same effect, e.g. create a new corporation owned by the recipient and then have it repeatedly enter into slightly favorable transactions with the one owned by the donor until the new one has all the assets, or any of a hundred other things.
If you try to do a wealth tax then their assets end up in another country under whatever arrangement is necessary to give them de facto control but not formal ownership.
The best way to solve the "buy, borrow, die" thing is actually a consumption tax because then borrowing money in order to spend it doesn't avoid the tax.
Getting from that to where they at least pay the same taxes as anyone else on the money they actually spend would be a marked improvement.
Of course people will try to cheat taxes, but they'll try to cheat any form of tax: income, capital gains, inheritance taxes, etc. People are good to try and evade taxes regardless of the tax mechanism.
Consumption taxes are regressive: a sales tax is a flat tax that taxes a billion on their $10 latte the same as a poor person. Consumption also doesn't scale linearly with wealth: most billionaires don't consume 1000x as much as a millionaire.
Only if you sell the shares, which they easily resolve by not doing.
> People are good to try and evade taxes regardless of the tax mechanism.
Which is why you should use the ones that are less susceptible to it rather than the ones that are more susceptible to it. Trying to identify the country in which "profit" is earned in an international supply chain, or value non-fungible assets not undergoing transactions, are easy to game. "You pay a given percentage when you buy something" is hard to game.
> Consumption taxes are regressive: a sales tax is a flat tax that taxes a billion on their $10 latte the same as a poor person.
The existing "progressive" income tax and benefits programs do worse than that: The billionaire pays less on $10 in marginal income than a poor person, because the taxes and benefits phase outs result in absurdly high marginal rates on the poor.
> Consumption also doesn't scale linearly with wealth: most billionaires don't consume 1000x as much as a millionaire.
Only if you're looking for it in the wrong place. A billionaire isn't going to buy a billion dollars in lattes, they're going to invest in some business ventures, which in turn are going to spend the money on equipment and vehicles and utilities and so on, i.e. consumption. You don't get a return on capital by sticking it in a mattress, you get a return by spending it to build or operate something.
This is just patently false. The highest marginal income tax rate is 37%.
If you've read articles claiming that billionaires pay some absurdly low tax rate, those articles are counting their capital gains as income. Which is just a flat out lie, since those gains don't actually get taxed until the gains are realized, and the value of that capital can go down.
You croak, your heirs become the beneficiaries of the trust. Rinse, repeat.
Re: estate taxes - almost no ultra rich pays them, even without surviving wife. According tom Garry Cohn (former big kahuna at Goldman Sachd and former treasury something or other in the first Trump admin) only morons pay estate taxes : https://www.cnbc.com/2017/08/29/only-morons-pay-the-estate-t...
IIRC this is part of how they avoid taxes in general. Penalties don't hurt enough for the ones who do eventually face them.
The beneficiaries then set up their own tax avoidance schemes. With the effect only rich people with poor tax planning skills, to quote Gary Cohn again, end up pay the estate tax.
