It depends. Social security taxes are 6.2% of Box 1 Wages. Medicare taxes are 1.45% of Box 1 Wages. The only amount refunded if it was over withheld would be Box 2, federal withholding. This is true whether you are a dependent or not.
The state taxes that are withheld could be refunded, also.
TurboTax Employee Tax Expert ColeenD3 is correct.
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