Let’s see if I can explain the basis of the system.
Take two businesses–this time both run by smart people. A small-town bookstore and a small-town videogame store. They both do $200,000 in sales per year. If they were both paying taxes based on income alone at the same rates as individuals, then they might pay $70,000 each in taxes.
The bookstore, on the average, buys books at a 40% discount. To buy enough books to sell for $200K, they spent $120K. If rent is $1,000 per month, then with no employees, office supplies, phone, Internet, or other expenses, the taxes would take all of the profit and still leave them with a loss.
Okay, let’s adjust the percentage for corporations, and make it 10%. The bookstore pays $20K in taxes, $12K in rent, $120K for books, and that leaves $48K for all of the other expenses. Looks like the owner won’t be able to pay himself much, but he could survive.
But what about the videogame store? On the average, they’re buying games at a 15% discount (many are even lower than that). At our special lowered tax rate, they’re paying $20K on income alone. The games for the year cost them $170,000, and rent is $12K. They’re losing $2K a year before even factoring in phone, employees, and so forth.
In some business, cost of goods sold is negligible (service-based businesses), and in some it’s even worse than the videogame example. A straight sales-based tax would destroy some businesses instantly, and be a big advantage to others.
So if income-based taxation for business doesn’t work, and straight profit-based taxation benefits mediocrity (and crooks), what do we do?
Fix all of the current loopholes and base it on gross profits rather than net profits–like a value-added tax. It ain’t perfect, but it beats what we have.