Which statement regarding self-employment is accurate? Answer: A. There is a threshold over which self-employment tax is not levied. B. There is no floor below which self-employment tax is not levied. C. Self-employment taxes serve to ensure that self-employed individuals are taxed in a manner similar to standard employees. D. The self-employment tax rate is 7.65%, which represents the sum of the Social Security tax rate and the Medicare tax rate