What were the tax rates for C corporations in 2014 for amounts not over $100,000?

2014 tax rates for C corporations in the United States were 15 percent for the first $50,000 of taxable income, 25 percent from $50,001 to $75,000 and 34 percent from $75,001 to $100,000, according to BizFilings. Personal service corporations pay a flat 35 percent rate.

Personal service corporations have employees who spend 95 percent or more of their time in service fields such as accounting, consulting and law, states BizFilings. A corporation may also be subject to the Alternative Minimum Tax if tax write-offs relative to income exceed a certain threshold, annual income does not exceed $7.5 million and the corporation has been in operation for over a year. The Alternative Minimum Tax rate is 20 percent with a 15 percent rate for some items.