How to fill out the 2026 W-4 (with examples)

The W-4 is how you tell your employer's payroll system how much federal income tax to withhold from each paycheck. It is not a tax return, not a filing with the IRS, and not a pledge to pay any particular amount in April. It is a set of instructions — your filing status, your dependents, any other income or deductions, and any flat-dollar extra — that payroll uses to compute withholding on every paycheck through the year.

The current form (2020 redesign, still in use in 2026) is five steps on one page. Most people only fill out Step 1, Step 3 if they have dependents, and Step 5. The other steps handle edge cases — a second job, a working spouse, side income, itemized deductions, or a need for extra withholding.

Before you start

Have three things on hand:

• Your Social Security card. Step 1(b) requires the SSN exactly as it appears.
• Your most recent paystub. Not strictly required but useful for cross-referencing year-to-date taxable wages and federal withholding.
• Your prior year's Form 1040. Tax liability on line 24 and taxable income on line 15 help you pick reasonable values for Steps 4(a) and 4(b) if you have the kind of income or deductions they cover.

If you are married filing jointly and your spouse also works, have their paystub or current W-4 on hand — Step 2 is the most error-prone step, and getting it right depends on both earners' numbers.

Step 1 — Personal info and filing status

Step 1(a): your legal name and address. Use your legal name exactly as it appears on your SSN card. A mismatch does not block withholding but can cause problems when your W-2 is filed at year end.

Step 1(b): your Social Security number. If you do not have an SSN you cannot use Form W-4 for wages. Pensioners use Form W-4P; retirement withdrawals use Form W-4R. Nonresident aliens should read IRS Notice 1392, which modifies several steps.

Step 1(c): your filing status. Three options:

• Single or Married filing separately. Default for unmarried filers and married people choosing to file separately.
• Married filing jointly (or Qualifying Surviving Spouse). Use if you are legally married at the end of the year and plan to file a joint return. MFJ uses wider tax brackets and a larger standard deduction, both baked into the withholding math.
• Head of household.Use only if you meet the IRS test: unmarried (or considered unmarried), paid more than half the cost of keeping up a home for the year, and had a qualifying person live with you more than half the year. HOH is not the same as "I'm a single parent" — many single parents file as Single, not HOH.

Picking the wrong status is the fastest way to get withholding wrong. Single/MFS is the safe default if you are unsure; you reconcile on your return.

Step 2 — Multiple jobs or spouse works

Step 2 is the single most misunderstood step on the W-4 and the most common cause of a balance-due return. If you have more than one job at the same time, or you are MFJ and both spouses work, the default withholding math assumes each paycheck is the household's only income — and each employer applies the full standard deduction to its own wages. The household ends up under-withheld.

Step 2 gives you three ways to fix this, in decreasing order of precision:

• Option (a): Use the IRS Tax Withholding Estimator. The online estimator at irs.gov asks about all household income and spits out Step 3, 4(a), and 4(c) values for one W-4 (usually the higher-paying job). Most accurate but takes 15 minutes and requires paystubs from all jobs.
• Option (b): Use the two-earners / multiple-jobs worksheet on page 3 of the W-4. Paper-and-pencil version of the estimator. Cross-reference your higher-paying job's annual wages against your lower-paying job's in the table on page 3 and enter the result on Step 4(c). Works if both jobs pay roughly similar amounts; gets rougher if one dwarfs the other.
• Option (c): Check the box at Step 2(c). The simplest option. Only use it if you have exactly two jobs (including one per spouse in MFJ) AND they pay roughly similar amounts. Checking the box tells payroll to use a different withholding table that bakes in the assumption of a second similar income — effectively halving the standard deduction each job applies. If incomes are materially different (say one spouse at $150k and the other at $40k) the checkbox over-corrects and you will over-withhold.

Whichever option you use, apply it on the higher-paying job's W-4 and leave Step 2 unchecked on the other. Applying it on both W-4s is a double correction that over-withholds significantly.

Step 3 — Claim your dependents

Step 3 lets you reduce withholding by the dollar value of tax credits you expect to claim on your return. The two common entries:

• $2,000 per qualifying child under age 17. Enter the number of qualifying children times $2,000 in the first field.
• $500 per other dependent. A qualifying relative, a qualifying child over 17 (college kid), an elderly parent. Enter the count times $500 in the second field.

Sum the two and write the total on the "Add the amounts above and enter the total here" line.

Example: two children under 17 and one college kid = 2 × $2,000 + 1 × $500 = $4,500.

Two important caveats:

• Income phaseouts. The Child Tax Credit phases down starting at Modified Adjusted Gross Income above $200,000 (Single) or $400,000 (MFJ), per Rev. Proc. 2025-32 for tax year 2026. The W-4 has no way to model the phaseout — it treats whatever you write on Step 3 as the full credit. If your MAGI is in the phaseout range, writing the full $2,000 per child will over-reduce withholding and you will owe at filing time.
• Only claim on one W-4 per household. If you and your spouse both work MFJ, only one of you claims Step 3. Both claiming it is a double count; both will under-withhold.

Step 4 — Other adjustments (optional)

Three optional fields for fine-tuning.

Step 4(a) — Other income

Federal taxable income you expect this year that did not come with W-2 withholding: interest, non-qualified dividends, taxable rental income, 1099 consulting, taxable retirement distributions. Entering a number here tells payroll to withhold extra to cover the expected tax on that income so you do not owe in April.

Example: you expect $8,000 in freelance consulting income and have not been making quarterly estimated payments. Enter $8,000 on Step 4(a) and payroll will annualize and withhold proportional federal tax.

Step 4(b) — Deductions

Any deductions above the 2026 standard deduction ($16,100 Single / $32,200 MFJ) that you plan to claim — itemized deductions (mortgage interest, SALT, charitable) or above-the-line adjustments (HSA contributions, student loan interest, traditional IRA contributions). Subtract the standard deduction from your expected total; if the result is positive, enter it.

Example: MFJ, you plan to itemize at $40,000. Standard deduction is $32,200. Enter $7,800 on Step 4(b).

Step 4(c) — Extra withholding per paycheck

Flat dollar amount added to each paycheck's withholding. The most flexible lever on the form — see the dedicated guide on what Step 4(c) does and how to size it.

Step 5 — Sign and date

Sign and date. An unsigned W-4 is not valid — payroll has to either ignore it and keep using your prior W-4, or, for new hires without one, withhold as Single with no adjustments (the default, which usually over-withholds).

Submitting the form

Hand the signed W-4 to HR or upload it in your payroll portal (ADP, Workday, Paychex, Gusto, and similar). The new W-4 takes effect on the next payroll run after your employer processes it — usually one pay cycle. Keep a copy for your records; the IRS does not receive a copy of the W-4.

Worked examples

Example 1 — Single filer, one job, no dependents

Step 1: personal info and Single status. Skip Steps 2, 3, and 4. Sign and date. Payroll withholds as Single with the standard deduction applied, and you should land close to zero in April assuming this is your only income.

Example 2 — MFJ, two earners, one child

Both spouses work W-2 jobs, incomes are similar ($90k and $85k), one child under 17. On the higher-earning spouse's W-4:

• Step 1: MFJ.
• Step 2(c): checkbox checked (both have W-2 income, roughly similar).
• Step 3: $2,000 (one qualifying child).
• Steps 4: blank.
• Step 5: sign.

On the other spouse's W-4:

• Step 1: MFJ.
• Step 2: unchecked (already handled on the higher earner).
• Step 3: blank (already claimed).
• Steps 4: blank.
• Step 5: sign.

If the incomes were very different — say $140k and $30k — the checkbox on the higher earner would over-withhold; use the IRS Estimator or the worksheet option instead.

Example 3 — Single filer with $10,000 of annual 1099 consulting on top of a W-2

• Step 1: Single.
• Step 2: skip.
• Step 3: blank.
• Step 4(a): $10,000 — so payroll withholds extra to cover expected tax on the freelance income.
• Step 5: sign.

Common mistakes

• Checking Step 2(c) on both spouses' W-4s. Double correction. Dramatic over-withholding. Pick one W-4 for the Step 2 fix.
• Claiming the full Child Tax Credit on Step 3 when your MAGI is in the phaseout range. The W-4 does not model the phaseout, so you will under-withhold by the phaseout amount.
• Forgetting to file a new W-4 after a life change. Marriage, divorce, a new job, a spouse starting or stopping work — any of these changes the household math and warrants a fresh W-4.
• Entering annual figures on Step 4(c) instead of per-paycheck. Step 4(c) is per pay period. For a $2,000 annual gap on a biweekly schedule, enter around $77, not $2,000.

Wrap-up

A W-4 does not have to be perfect to do its job — the IRS safe-harbor rule in Publication 505 forgives under-withholding up to 10% in most cases, and a small balance due in April is not a failure. The goal is accuracy within reason.

Once you have filled out your new W-4, run the numbers in the Breakeven calculator to verify your projected refund or balance due for 2026. For the arithmetic and the IRS publications behind it, see the methodology.