Tax Withholding Estimator FAQs

No, you currently can’t use this tool if you (and your spouse if filing jointly) don’t have a job, pension, or annuity with federal income tax withholding.

The estimator helps you complete a new Form W-4 or W-4P to give to your employer or pension provider to adjust the amount of federal tax withheld from your pay.

If you don’t have a job or pension, the estimator can’t help you because you don’t have a W-4 or W-4P to give to an employer or pension provider.

No, you currently can’t use this tool to estimate withholding on future income.

No, you can’t use this tool if you have nonresident status for U.S. tax purposes. Use Notice 1392, Supplemental Form W-4 Instructions for Nonresident Aliens instead.

You’re a U.S. resident if one of these applies:

• You meet the IRS requirements for lawful permanent residence in the U.S. this year (The IRS calls this the green card test).
• You spend enough days in the U.S. this year (The IRS calls this the substantial presence test).

If you’re an employee with pre-tax contributions to health insurance on your paycheck, enter them on the Income & tax payments step.

If you’re self-employed, claim the self-employed health insurance deduction on the Adjustments step.

If you itemize deductions, claim health insurance premiums on the Deduction choice step under “Medical and dental expenses deduction.”

The estimator only supports some credits. It also uses the information you enter to hide credits that you appear ineligible for.

We recommend you check your inputs for federal taxes withheld on the Income & tax payments step. Common mistakes made on this page can greatly impact the amounts reflected in results.

Under federal taxes, double-check that:

• The amount of federal taxes withheld for the pay period only includes what was withheld for that limited time period.
• The amount withheld so far for the year, is a total for the year.
• You enter the correct line from your paystub. Federal tax withholding may be labeled as FIT, FITW, FITC, Fed W/H, Fed tax, Fed withholding, Federal income tax, or similar.
• If you've requested extra federal taxes withheld from your paycheck, that extra amount may appear on a separate line. Be sure to add these two amounts.
• You don’t include states taxes, local taxes, Medicare, Social Security, or other amounts withheld when entering your federal tax withholding.
• You’re referencing your most recent paycheck.

For jobs you currently hold - The estimator calculates your expected tax withholding by:

• First, multiplying the estimated number of pay periods for the year by the amount withheld per pay period.
• Next, adding the results to the year-to-date withholding.
• Finally, adding any estimated tax payments or other taxes paid for other sources of income.

The estimator uses your filing status, income, adjustments, deductions, and credits to estimate your tax liability before taking into account your withholding and estimated payments.

Your actual tax liability when you file your tax return may differ from this estimate if the amounts you entered in the estimator are incorrect or if your situation involves provisions in the tax code that are not included in this estimator.

Your estimated tax refund or tax owed is calculated by subtracting the following from your estimated tax liability:

• Amounts already withheld,
• Your expected amount of taxes that will be withheld for the remainder of the year if you don't change your current withholding amount, and
• Your estimated total estimated payments for the year. 

The estimator helps you complete Form W-4 or W-4P to adjust the amount of federal income tax withheld from your wages, pension, or annuity. Forms W-4 and W-4P do not address Social Security or Medicare taxes, known as FICA, which are fixed percentages taken out of your pay.

However, the estimator does account for additional Medicare tax, paid by people with high incomes. 

The estimator doesn’t provide withholding recommendations for Social Security and Unemployment Insurance. Withholding for these types of income differs from standard withholding.

If you want to change your withholding amounts for Social Security benefits or unemployment compensation, please use Form W-4V. However, you may choose to have tax withheld from your wages, pension, or annuity to cover the tax on your Social Security benefits and unemployment income. If you enter those types of income into the estimator, its recommendation will account for them in your withholding.

Forms W-4 and W-4P offer employees four ways to change their withholding:

• Step 3 to reduce the amount of tax withheld
• Step 4(c) to increase the amount of tax withheld
• Step 4(a) to increase the amount of income subject to withholding
• Step 4(b) to decrease the amount of income subject to withholding

These four steps are all related. For example, steps 4(a) and 4(b) work in opposite directions, so the amounts could be combined into one net amount of additional income or reduction to income. Similarly, steps 3 and 4(c) could be combined into one net amount by which to increase or decrease the amount of tax to withhold.

There’s no need to use more than two of these four steps on the W-4 and W-4P. If steps 4(a) and 4(b) don’t apply, then the W-4 may need only one number (on either step 3 or step 4(c)).

When an individual or couple holds multiples jobs at once, the amounts needed on steps 3, 4(a), 4(b), and 4(c) should go on the W-4 or W-4P associated with the highest-paying job, pension, or annuity. The W-4s for all other jobs and W-4Ps for all other pensions or annuities should have zeros (or blank) for these four steps, which will result in the standard amount of withholding for the marital status indicated in step 1 of the W-4 or W-4P.

That’s the most common need for step 3, but step 3 can be used for any kind of tax credit.

Tax credits reduce your tax obligation dollar-for-dollar, so entering an amount on step 3 will reduce your withholding by that amount over the course of a year. 

The estimator can also use step 3 to account for all deductions and adjustments to income that would otherwise be accounted for on step 4(b). This allows you to limit the amount of information you give to your employer on Form W-4, protecting your privacy.

The estimator uses step 3 to reduce your withholding when you are withholding too much tax. It determines the yearly amount to put on step 3 that will result in a $0 refund.

You may enter multiples of $500 up to the amount recommended by the estimator. For example, if the estimator recommends that you enter $1,650 on step 3 of your W-4, then simply enter $1,500 into your payroll system.

Entering a value higher than what the estimator recommends in step 3 may cause you to owe taxes when you file your return.

The pre-filled Form W-4 or W-4P doesn’t include any of your personally identifiable information since the tool doesn’t ask for this information. It may pre-fill either step 4(a) or step 4(b) (to change the amount of income subject to withholding) and it may pre-fill either step 3 or step 4(c) (to change the amount of tax withheld directly). Find details about why the tool’s recommendation includes only one or two amounts to enter on Forms W-4 and W-4P.