That sounds odd, given that in most(?) countries businesses only pay taxes on their profits.
(of course, this is not relevant to the discussion at hand about a business in the US)
Of course it gets further complicated if your company is a standalone legal entity, but in that case you have a lot more funny scenarios, e.g. you can go to jail for acting against the interest of the company you are the sole owner of.
The business itself pays tax on the net, but the individual pulling money out of the business receives income and must pay income tax AND the additional social security tax.
Alternatively, if it's cash only, they receive 100% of the cash and skip all that.