Here's a supplementary article:
https://www.propublica.org/article/y...-a-billionaire
This one focuses primarily on income and payroll taxes and how they can be avoided:
"Large charitable donations reduce taxable income. Other tax-saving approaches are more arcane: everything from taking deductions for things like interest payments to various credits for business owners."
"Using their vast holdings of stock, they can make large charitable grants. This achieves the twin feat of avoiding any tax on the stock’s growth while getting tax deductions for the full value."
"The richest also can choose when to take income, matching up their deductions to reduce their bills."
This last point is particularly telling. Can you choose when to take income? Very few people can with any regularity and you won't be getting multi-billion dollar lines of credit with your burgeoning stock value used as collateral.
A lot of deductions don't exist because they're "fair". They exist because the wealthy are more able to change the tax codes to their liking.
Finally, this thread really isn't about a wealth tax. Its a suggested remedy. It seems to work for Switzerland which has double the per capita billionaires the US has.
If a wealth tax were to exist it would likely be similar to what the self-employed do during income tax time. The self-employed are expected to save up money because they normally don't pay out regular tax deductions. When income tax comes they use their savings to pay their taxes. Similarly the wealthy would be expected to save up for wealth tax time. This is commonly referred to as responsibility.