Exemptions and additional withholding

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Instructions for the W-4 are on the IRS site: About Form W-4.

Generally, with no children or dependents you enter 0 for dependents. A minor, or someone with very little income, is usually exempt.

If you're unsure how to calculate exemptions, dependents, or withholding, ask a tax professional. Your payroll company, listed on your vouchers and the RABS home page, handles your tax documents.