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.
Only very highly specialized interpreters (business, engineering, scientific, etc.) who speak obscure languages earn 50 to 75 dollars and hour.   I would say a more realist â¦ ic venture for a medical interpreter is in the range of 15 to 25 dollars.nly very highly specialized interpreters (business, engineering, scientific, etc.) who speak obscure languages earn 50 to 75 dollars and hour.   I would say a more realist â¦ ic venture for a medical interpreter is in the range of 15 to 25 dollars.