Claim zero (0) dependents to maximize the amount of taxes withheld from each paycheck (not 'deductions', in your question). There is also space to request an additional dollar amount withheld from each check as well (only for Federal, not state). For example, 0 dependents + $25 - the maximum is withheld from each paycheck for both Federal and State, and an additional $25 is withheld for Federal taxes.
Note: Withholding can be changed any time during the year by submitting a new W-4 to your employer.
