Use this tool to estimate the federal income tax you want your employer to withhold from your paycheck. This is tax withholding. See how your withholding affects your refund, take-home pay or tax due. How it works Use this tool to: Estimate your federal income tax withholding See how your refund, take-home pay or tax due are affected by withholding amount Choose an estimated withholding amount that works for you Results are as accurate as the information you enter. What you need Have this ready: Paystubs for all jobs (spouse too) Other income info (side jobs, self-employment, investments, etc.) Most recent tax return Your information isn't saved. Learn more about Security. Use the Tax Withholding Estimator Don't use this tool if: You have a pension but not a job. Estimate your tax withholding with the new Form W-4P. You have nonresident alien status. Use Notice 1392, Supplemental Form W-4 Instructions for Nonresident Aliens. Your tax situation is complex. This includes alternative minimum tax. See Publication 505, Tax Withholding and Estimated Tax. Estimator Frequently Asked Questions More on tax withholding When to Check Your Tax Withholding Why Check Your Tax Withholding About Tax Withholding Publication 505, Tax Withholding and Estimated Tax W-4 Forms Form W-4 Employee Withholding Certificate Form W-4P, Withholding Certificate for Pension or Annuity Payments Notice 1392, Supplement Form W-4 Instructions for Nonresident AliensPDF After you use the estimator Use your estimate to change your tax withholding amount on Form W-4. Or keep the same amount. To change your tax withholding amount: Enter your new tax withholding amount on Form W-4, Employee's Withholding Certificate Ask your employer if they use an automated system to submit Form W-4 Submit or give Form W-4 to your employer To keep your same tax withholding amount: You don't need to do anything at this time. Check your withholding again when needed and each year with the Estimator. This helps you make sure the amount withheld works for your circumstance. When to check your withholding Check your tax withholding every year, especially: When you have a major life change New job or other paid work Major income change Marriage Child birth or adoption Home purchase If you changed your tax withholding mid-year Check your tax withholding at year-end, and adjust as needed with a new W-4 If you have more questions about your withholding, ask your employer or tax advisor. Why check your withholding There are several reasons to check your withholding: It can protect against having too little tax withheld and facing an unexpected tax bill or penalty at tax time next year. It can let you adjust your tax withheld up front, so you receive a bigger paycheck and smaller refund at tax time. Security The Tax Withholding Estimator doesn't ask for personal information such as your name, social security number, address or bank account numbers. We don't save or record the information you enter in the estimator. For details on how to protect yourself from scams, see Tax Scams/Consumer Alerts.