Why would prices go up with a 20% tax? Where do you get that from? Apple is making 30 billion in profit, if their profits fall to say 27 billion why would they have to increase their prices ? Yes it is wrong their cummulative tax to be 10%. Companies making such profits shouldn't be paying tax equivalent to a low wage worker. But hey that's ecomincs 101... Lets all now down to the engines of innovation...
If Apple made $27b instead of $30b, the shortfall has to be made up somewhere, either in higher prices (on the revenue side) or cutbacks on the R&D, infrastructure expansion and/or maintenance, employee hiring/wages, management compensation, dividends for stockholders, etc. It's not like they're blowing it on coke and prostitutes (a la the Secret Service!).
Did you read my post? There are a LOT of factors other than higher consumer prices that create an overall negative impact when a corporation is overtaxed. When push comes to shove, the consumer eats all expenses when he/she buys a product/service. Taxes are an expense.
So while higher prices aren't guaranteed, they are a distinct possibility. What is guaranteed, however, is the overall negative economic impact of removing money from the private sector and depositing it in the public sector, making the free market smaller and bureaucracy larger and more expensive to maintain.
I'd say 15% across-the-board corporate tax rate with zero loopholes would be fair, and low enough to end the overseas bank/subsidiary game. it would also be closer in line to the rates paid in the rest of the world. Ending "pork-barrel" government subsidies to cherry-picked industries and/or corporate bail-outs would also help--not only to save revenue (by not rewarding failure and punishing success), but, more importantly, to reward innovation.
IMHO, this is why I hated the bailout money the last two US Presidents have spread around (W & Obama). The only appropriate means of "bailing out" a corporation is
bankruptcy. That's what it's for. The losing company either dies or has its outstanding debt restructured, and its competition are rewarded with the opportunity to either buy its component assets for pennies on the dollar (if it dies) or at least gain a larger share of the remaining market for that sector's product or service.