the plant or animal tissue rich in such molecules, considered as a food source supplying essential amino acids to the body. 3. (formerly) a substance thought to be the essential nitrogenous component of all organic bodies. adjective. 4. Biochemistry. of the nature of or containing protein.
The rate, as well as the amount, you pay changes as the amount of income does. You must file a tax return if you had net earnings from self-employment of $400 or more. This is your total self-employment income less the expenses paid in operating your trade or business, multiplied by 92.35%.
Regardless of your gross income, you are generally required to file an income tax return if any of the following are true: 1  You had net self-employment income of $400 or more. 2  You had unemployment income. 3  You owe Alternative Minimum Tax. 4  You owe household employment taxes.