Utah: why is my paycheck lower than expected?

Top reasons a Utah worker's paycheck shrinks — and how to figure out which one is yours.

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Top reasons a Utah paycheck looks smaller

New W-4 (federal or state).
Year-to-date wages crossed a bracket (less common in flat-rate states like Utah).
Bonus withheld at supplemental rate.
Benefits enrollment change.
401(k) percent change.
New garnishment or child-support order.

Utah official sources

Utah State Tax Commission

Utah Labor Commission