The proper way to fill out a W4 for a single person with no dependents is as follows:
https://turbotax.intuit.com/tax-tips/irs-tax-forms/how-to-estimate-federal-withholding/L99CO0yTK
You would follow:
step 1: Enter your personal information
step 4: complete this if you have additional income , deductions or adjustments.
step 5: sign
Submit to your employer.
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