The Streptococcus bovis/Streptococcus equinus complex includes four major species that all belong to group D streptococci (GDS); this taxonomy was established in 2003 and is summarized in the Table (table 1) [1].
For 2014, the self-employment tax rate is 15.3 percent. The rate is divided into two parts: 12.4 percent for social security and 2.9 percent for Medicare. But as a self-employed individual, you are considered both the employer and the employee, which makes the entire self-employment tax burden yours.
How to Plan for, Minimize, and Report the Self-Employment Tax. The Self-Employment Tax is how an independent contractor pays Social Security and Medicare payroll taxes. In the case of an employee, the employer and employee split the cost of Social Security and Medicare taxes, each paying 7.65% of eligible wages. An independent contractor, by contrast, is both the employer and the employee, so a self-employed person pays both halves, or 15.3% total. The 15.3% self-employment tax is composed of a 12.4% Social Security tax on the first $127,200 of net self-employment income for the year 2017, and a Medicare tax of 2.9% on all net self-employment income.