You usually must pay self-employment tax if you had net earnings from self-employment of $400 or more. Generally, the amount subject to self-employment tax is 92.35% of your net earnings from self-employment.dditional Medicare Tax applies to self-employment income above a threshold amount received in taxable years beginning after December 31, 2012. The threshold amounts are $250,000 for a married individual filing a joint return, $125,000 for a married individual filing a separate return, and $200,000 for all others.
According to the salaries stated by the Bureau of Labor Statistics, this could range from about $20 or more depending on experience, skill and what you are interpreting. There are also related opportunities for the skill of sign language interpreting and translating in teaching and writing textbooks.
The average annual salary range for federal and state staff court interpreters is between $30,000 and $80,000, according to the NJIT. Entry-level interpreters working in state-and county-level courts tend to earn between $30,000 to $40,000 a year, according to the National Center for State Courts.ndependent court interpreters working in the New York State Unified Court System make $250 per day, as of March 2012. A full-time court interpreter working in the city of Orlando, Florida, makes between $92 and $174 per day, as of July 2012.