If you begin a second EMS job with a different income, which W-4 details are most important to adjust?

• A. Do not update W-4 when starting a second job.
• B. Filing status and allowances; may adjust to manage withholding.
• C. Change the employer's name.
• D. Update your address only.

Answer: (B)

W-4 withholding is determined by your filing status and the number of allowances you claim, which tell your employer how much federal tax to take from each paycheck. When you start a second job with a different income, your total earnings for the year change, so withholding should be adjusted to match that new picture. By updating your filing status and the number of allowances (or dependents) on the W-4, you help ensure the combined withholding from both jobs more closely aligns with your actual tax bill for the year. If you don’t adjust, you could end up owing at tax time or overpay. You can also opt for extra withholding if you prefer to have more tax taken out. Changing the employer’s name or your address doesn’t affect withholding.