Q. Where can I find current and historical corporate and personal income tax rates by country?

Take a look at Worldwide Tax Summaries Online by PricewaterhouseCoopers

Go to the database WDI Online and search for an indicator (try searching for "tax rate"). WDI will create a table showing that indicator in several counties from 1980 to 2014.

You might also check out KPMG's Corporate and Indirect Tax Survey 2014.