Federal tax withholding guide
How to use the IRS Tax Withholding Estimator
Find the IRS Tax Withholding Estimator, learn which workers can use it, and prepare the pay stubs and records the IRS requests.
Where is the official paycheck tax withholding estimator?
Use the IRS Tax Withholding Estimator at IRS.gov. It estimates federal income tax withholding for eligible workers with W-2 jobs and people receiving pensions or annuities with federal withholding. This page links to the IRS service; it does not calculate tax or recommend a withholding amount. Checked November 3, 2026.
What should I have ready before starting?
The IRS says to gather recent pay stubs for your jobs, pensions, or annuities. If you expect to file jointly, gather your spouse's recent pay stubs too. If you have other income or may itemize deductions, also prepare your most recent federal return, records of self-employment, gig-work, or Social Security payments, and records for expenses related to itemized deductions or adjustments. The estimator asks about you and your spouse, income, and adjustments, deductions, or credits.
Who cannot use the IRS estimator?
The IRS says the tool is for people with a W-2 job or a pension or annuity with federal income tax withholding. It cannot be used by people who are nonresident aliens for U.S. tax purposes; the IRS directs them to Notice 1392 and the relevant Form W-4 instructions. Check the current IRS guidance if your situation does not fit the listed cases.
What happens after I enter my information?
The IRS says the estimator can produce a pre-filled Form W-4 or Form W-4P if you decide to change withholding. Review the form and follow the delivery instructions for your employer or pension provider. The estimator is an estimate of federal withholding, and this guide does not prepare a tax return or determine your final tax liability.
When should I check withholding again?
The IRS recommends checking in January and after major changes such as a new job, a major income change, marriage, divorce, separation, birth or adoption, or buying a home. The IRS also says a change made during the year may need to be revisited in late December for the next year.
Does the IRS save the information I enter?
The IRS page says the estimator does not ask for your name, Social Security number, address, or bank account numbers, and that responses are not saved or shared with the IRS and are cleared when the browser window is closed. Review the live IRS privacy and use information before entering details, since website practices can change.
Sources
- Internal Revenue Service: Tax Withholding Estimator (eligibility, required records, process, privacy statements, and when to check; checked November 3, 2026)
- Internal Revenue Service: Form W-4 (employee withholding certificate)
- Internal Revenue Service: Notice 1392 (supplemental Form W-4 instructions for nonresident aliens)