Cause. Hives can also be classified by the purported causative agent. Many different substances in the environment may cause hives, including medications, food and physical agents. In perhaps more than 50% of people with chronic hives of unknown cause, it is due to an autoimmune reaction. Medications
The average American pays almost 30% of their income to taxes. Here's the breakdown. According to the IRS's preliminary data from the 2015 tax year (the returns you filed during 2016), there was a total of $1.454 trillion in income tax owed, which translates to an average effective federal income tax rate of about 13.5% per return.
U.S. Corporation Tax Rate through 2016. It is common to say that the U.S. corporate tax rate is 35%, but the rate varies from 15% to 35%, depending on the amount of corporate income subject to tax for the year. If you want to calculate the corporate tax for your business, you will first need to know your taxable income.