Examples of Unethical Research. Whichever ethical requirement may be chosen, the history of human research offers grim examples of its violation. During World War II, German researchers performed a large number of experiments in concentration camps and elsewhere.
First, lower income earners pay no federal income taxes on Social Security benefits, so taxation is not an issue for them. However, once a relatively low threshold level of taxable income is surpassed, somewhere between 50 to 85 percent of benefits are subject to taxation.
Social Security tax is one part of the Federal Insurance Contribution Act (FICA) tax, and it is assessed at a rate of 12.4%. This is split evenly between the employee and employer, and it applies to earned income up to $118,500 for 2016 -- resulting in a maximum Social Security tax of $14,694. The remainder of FICA tax goes to Medicare.