What Your W-4 Form Actually Controls and Why Getting It Wrong Costs You at Tax Time
Your W-4 form is one of the most important tax documents you complete when starting a new job. Many people fill it out quickly and never think about it again. However, the information on this form directly affects how much federal income tax is withheld from each paycheck. If your W-4 is incorrect, you could end up owing money at tax time or receive a refund that is much larger than expected.