FAQs

All Items: Withholding Taxes

Are pretax salary reduction deferrals included when determining the total amount of an employee's supplemental wages?
How should an employer withhold federal income and employment taxes on supplemental wages?
Is state income tax withholding on supplemental wages handled differently than withholding on regular wages?
Must an employer always treat reported tips and overtime pay received by an employee as supplemental wages for purposes of income and employment tax withholding?
Should payments to an employee for business travel and other necessary business expenses be treated as supplemental wages for income and employment tax withholding purposes?
What types of payments to employees are considered supplemental wages?
What taxes must be withheld from supplemental wages paid to an employee?
When should vacation pay be taxed as supplemental wages?
How long must an employer keep an employee's Form W-4?
Is an employer allowed to request a copy of an alien's Social Security card even if it is not used as proof for the I-9?

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About This Category

Frequently asked questions and answers on HR issues relating to payroll: withholding taxes.