David S. Miller writes that when Facebook goes public later this year, Mark Zuckerberg plans to exercise stock options worth $5 billion of the $28 billion that his ownership stake will be worth and since the $5 billion he will receive will be treated as salary, Zuckerberg will have a tax bill of more than $2 billion making him, quite possibly, the largest taxpayer in history. But how much income tax will Zuckerberg pay on the rest of his stock that he won't immediately sell? Nothing, nada, zilch. He can simply use his stock as collateral to borrow against his tremendous wealth and avoid all tax. That's what Lawrence J. Ellison, the chief executive of Oracle, did, reportedly borrowing more than a billion dollars against his Oracle shares to buy one of the most expensive yachts in the world. Or consider the case of Steven P. Jobs who never sold a single share of Apple after he rejoined the company in 1997, and therefore never paying a penny of tax on the over $2 billion of Apple stock he held at his death. Now Jobs' widow can sell those shares without paying any income tax on the appreciation before his death
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