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Federal form W-4 is used to establish your withholding allowances, which in turn sets the level at which taxes will be withheld from your paycheck.

Claiming more allowances means that less of your paycheck is withheld as taxes, meaning that you could end up owing money in the future. Claiming zero allowances means that taxes are withheld at the highest possible rate, meaning that you will likely receive a refund in the future.

If you have questions about the number of allowances you should claim, please review the full W-4 and its attached worksheet, or consult with a financial professional.