The Social Security tax withheld from employees during the year 2010 will be 6.2% of the first $106,800 of each employee's taxable earnings. The employee's earnings in excess of $106,800 are not subject to the Social Security tax. In addition to the Social Security tax, the entire amount of each employees' taxable earnings is subject to the Medicare tax of 1.45%.

Both the Social Security tax and the Medicare tax must be matched by the employer. This means the employer must remit to the federal government 12.4% of each employee's first $106,800 of taxable earnings plus 2.9% of each employee's earnings regardless of amount.

Self-employed individuals are responsible for paying both the employee and the employer portions of the Social Security tax and the Medicare tax.

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