W-4 Calculator — 2026 Federal Withholding Estimator

Your W-4 controls how much federal income tax your employer withholds from every paycheck. Get it wrong and you either owe a big bill in April or you give the IRS an interest-free loan all year.

This free W-4 calculator helps you estimate the right withholding settings for your situation before you hand the form to HR.

Filing status

Pay frequency

Number of jobs in household

Your annual salary

Other income (interest, side, etc.)

Itemized deductions (if any)

Dependents under 17 (qualifying children)

Other dependents

Extra withholding per check ($)

Estimate

$0.00

You'll likely refund approximately this amount at tax time.

Projected annual withholding$8,114.00

Expected federal tax owed$8,114.00

Dependent tax credits− $0.00

Effective deductions used$15,000.00

W-4 recommendation

• Step 2(c): Leave unchecked
• Step 3 dependent credits: $0.00
• Step 4(b) deductions: $0.00
• Step 4(c) extra WH/check: $0.00

Estimates only. Not tax advice. Use IRS Form W-4 instructions and the IRS Tax Withholding Estimator for your final W-4 entries.

What Is Form W-4?

Form W-4 is the IRS Employee's Withholding Certificate. Every employee fills one out when starting a new job. You can also update it anytime your situation changes.

The form tells your employer how much federal income tax to withhold from each paycheck. Your employer sends that withheld money to the IRS on your behalf throughout the year. When you file your tax return in the spring, the IRS compares what was withheld to what you actually owe. If too much was withheld, you get a refund. If too little, you owe the difference plus potential penalties.

The IRS redesigned Form W-4 in 2020. The new version uses a 5-step process instead of the old allowances system. Steps 1 and 5 are required. Steps 2, 3, and 4 are optional but improve accuracy.

How the New W-4 Works (2026)

The 2026 Form W-4 has five steps.

Step 1 is your personal information and filing status. You choose single, married filing jointly, married filing separately, or head of household. Your filing status is the biggest factor in your withholding amount.

Step 2 applies if you have more than one job or if you and your spouse both work. Checking this box adjusts withholding upward. Workers who skip this step with two incomes often end up owing money at tax time.

Step 3 is the Child Tax Credit adjustment. For 2026, the credit is $2,000 per qualifying child under age 17. Enter $2,000 per qualifying child and $500 for each other dependent. This reduces your withholding by that dollar amount spread across your paychecks.

Step 4 covers other income and deductions. Use 4a to add other income sources that do not have withholding, like interest, dividends, or freelance income. Use 4b if you plan to itemize deductions above the standard deduction. Use 4c to request additional flat dollar withholding per paycheck.

Step 5 is your signature. Only Steps 1 and 5 are required to submit a valid W-4.

When to Update Your W-4

You should review your W-4 whenever your life or finances change. These situations almost always affect the right withholding amount.

You got married or divorced. Filing status changes affect your tax bracket and the standard deduction you can claim.

You had a child. Each qualifying child reduces your tax by up to $2,000 through the Child Tax Credit.

You took on a second job or your spouse started working. Two incomes in one household often push a couple into a higher bracket than either income would hit alone.

Your income went up or down significantly. A raise, a promotion, or losing income from a second job all change where you land in the federal brackets.

You paid a big tax bill last year. That is a sign your withholding was too low. Adjusting Step 4c upward adds extra withholding each period.

Common W-4 Mistakes

Claiming exempt when you do not qualify is the biggest W-4 mistake. You can only claim exempt if you had no federal tax liability last year and expect none this year. Claiming exempt incorrectly means you will owe the full tax bill in April plus penalties.

Skipping Step 2 when you have two incomes. Two earners in one household often owe more than expected at tax time because each employer withholds based only on that one income, not the combined total.

Not updating after a major life event. A W-4 from a decade ago may no longer match your situation. Check yours now if you have not looked at it in the past two years.

W-4 vs. W-2 vs. W-9 — What Is the Difference?

Form W-4 is completed by employees and submitted to their employer before the first paycheck. It controls withholding.

Form W-2 is issued by employers every January. It reports what you earned and how much was withheld in the prior year. You use it to file your tax return.

Form W-9 is for independent contractors. Contractors do not have withholding taken from their payments. They submit a W-9 so the hiring business can report what they were paid. Contractors pay their own taxes quarterly.

If you receive a W-2, you are an employee. Fill out a W-4. If you receive a 1099, you are a contractor. Fill out a W-9.

Frequently Asked Questions — W-4 Calculator

How often should I update my W-4?+

The IRS recommends reviewing your W-4 at least once per year and any time your tax situation changes. Life events that affect your W-4 include marriage, divorce, having a child, taking on a second job, or a significant income change. Workers who had a large tax bill or a very large refund in the prior year should always update their W-4. The IRS Free File withholding estimator at irs.gov can also guide you through the right settings.

What happens if I claim exempt on my W-4?+

If you claim exempt, your employer withholds zero federal income tax from your paychecks for the year. This is only legal if you had no federal income tax liability last year and expect none this year. Most workers do not qualify for exempt status. If you claim exempt incorrectly, you will owe the full tax amount at filing plus a potential underpayment penalty of 0.5% per month on the unpaid balance.

Can I still use my old pre-2020 W-4?+

Your employer can continue using a pre-2020 W-4 already on file. You are not required to submit a new one. However, if you want to update your withholding for any reason, you must use the current Form W-4. The old allowances system no longer applies. When updating, use this calculator to estimate the right settings before you submit.

Does my W-4 affect state income tax withholding?+

Federal Form W-4 only controls federal withholding. Most states have their own separate state withholding form. Some states allow employers to use the federal W-4 for state withholding as well, but many do not. Check with your HR department or your state's department of revenue for the correct state form. Use the paycheck calculator on this site to model the combined federal and state impact on your take-home.

What should I put on my W-4 to get the most money per paycheck?+

To maximize your take-home pay each period, you can reduce withholding by claiming all eligible dependents in Step 3, adding itemized deductions in Step 4b if your itemized deductions exceed the standard deduction, and not adding extra withholding in Step 4c. However, reducing withholding too far means owing money and penalties in April. The goal is accurate withholding, not maximum withholding or minimum withholding. Use this calculator to find the sweet spot.

This tool estimates federal withholding for planning purposes only. It does not constitute tax advice. For advice specific to your situation, consult a licensed tax professional.