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stopearthmachine t1_iuk1nx8 wrote

Reply to comment by penguinise in [CA] Almost 40% of my paycheck is being taxed. How can I alter my W4 to reflect a more accurate rate? by [deleted]

Could a signing bonus (given to me from a previous paycheck, not the one sampled in the above post) contribute to my SS tax being higher on a regular paycheck since it counted toward my overall income?

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penguinise t1_iuk4bic wrote

No. FICA is 7.65% of your first $147,000 of wages paid by that employer - since it's applied as a flat tax it is representative of the gross pay on the current check.

The most common cause of this would be receiving a taxable fringe benefit or other non-cash compensation item, which adds to your taxable wages for withholding but not the cash paid.

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