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.
Overview of North Carolina Taxes. The North Carolina state income tax is currently 5.75%. As of 2014, the state eliminated progressive income tax rates. All state taxpayers now face the 5.75% rate since 2015, which has remained constant in subsequent tax years. More on North Carolina taxes can be found in the tabbed pages below.