When should I adjust my W-4 withholding?

Adjust your W-4 after major life changes: getting married or divorced, having a baby, starting or losing a second job, or a significant income change. If you consistently receive large refunds, reduce withholding to increase take-home pay. If you owe taxes every year, increase withholding. Use the IRS Tax Withholding Estimator at irs.gov to calculate the right withholding for your situation.