This is not much of a story. People incorporate for all sorts of reasons, such as shielding themselves from lawsuits. There are millions of corporations in the United States. The S-corporation is the most popular form of corporation for the small business, because it is a pass-through corporation which only gets taxed once. A C-corporation subjects the owner to double taxation, at the corporate level and at the personal level. All the income of the S-corporation would have passed through to Biden and would have been taxed at the personal level.

The law says you have to pay yourself a reasonable salary, so you're not just using the corporation to avoid payroll taxes. Social Security taxes are capped anyway at about $132,000. So as long as he paid himself a salary of at least that amount, he didn't avoid any social security tax. He might have avoided a little Medicare tax, but that's about it.

Biden publishes his tax returns, so there is no secret about anything he is doing, tax-wise.

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