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Generally, ten years if you are able to earn all 40 work credits during that time. In 2010 and 2011, $1,120 in wages equals one work credit; you can earn a maximum of 4 credits per year (earnings of $4,480).

At present, the cap on Social Security withholding is 6.2% of the first $106,800 of earned income, which your employer matches with an additional 6.2%. Medicare (Part A) withholding is 1.45% of all earned income plus 1.45% employer match; there is no tax ceiling on Medicare.

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14y ago

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