I question how my employer is handling my Social Security tax withholding. It looks like start with my portion of the revenue I generated, then take out business expenses and my 7.65% of SS/Medicare in order to arrive at my net taxable income. Then they withhold my federal and local taxes AND another 7.65%. It looks like they are doing this to recoup THEIR portion of the Payroll taxes that they pay for me. Is that Kosher? It doesn't seem fair for them to deduct extra money from my pay in order to cover their share of taxes. Any advice would be appreciated! Thanks.