There is no single dollar figure that answers how much state and federal tax should be withheld from your paycheck, because the right amount depends on your filing status, total income, the credits you qualify for, and the state you work in. Federal income tax withholding follows seven brackets running from 10% to 37% in 2026, FICA taxes come out at fixed rates on top of that, and state withholding ranges from zero in nine states to over 13% at the highest brackets elsewhere. The practical way to land on your number is to run the IRS Tax Withholding Estimator with a recent pay stub, then update your Form W-4 so each paycheck reflects what you’ll actually owe.
What Comes Out of Your Paycheck
Three separate taxes get withheld from most wages. Federal income tax is the one you have direct control over through Form W-4. FICA taxes, which fund Social Security and Medicare, come out at fixed rates the W-4 does not affect. State income tax is withheld in the 41 states that tax wages, using a separate state withholding certificate.
Getting the total right matters in both directions. Underwithhold and you can face an IRS underpayment penalty, currently running at 7% interest for early 2026.1Internal Revenue Service. Quarterly Interest Rates Overwithhold and you hand the government an interest-free loan for the year. The average federal refund during the 2026 filing season was roughly $3,800, which works out to about $317 a month those taxpayers could have kept in each paycheck.
Federal Income Tax Withholding
Federal law requires your employer to withhold income tax from every paycheck based on the information you enter on Form W-4.2Office of the Law Revision Counsel. 26 USC 3402 – Income Tax Collected at Source Three inputs drive the amount: your filing status, your income, and the credits or adjustments you claim.
Filing status is the biggest lever. Single and married-filing-separately hit higher brackets sooner than married-filing-jointly or head-of-household, because the joint and head-of-household brackets are roughly twice as wide. The federal income tax is progressive, so only the dollars inside each bracket get taxed at that bracket’s rate, not your whole income.3Internal Revenue Service. Federal Income Tax Rates and Brackets Before the rates apply at all, the standard deduction is subtracted from your gross income. For 2026, that deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.4Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
2026 Federal Brackets, Single Filer
- 10% on taxable income up to $12,400
- 12% on $12,401 to $50,400
- 22% on $50,401 to $105,700
- 24% on $105,701 to $201,775
- 32% on $201,776 to $256,225
- 35% on $256,226 to $640,600
- 37% above $640,600
2026 Federal Brackets, Married Filing Jointly
- 10% on taxable income up to $24,800
- 12% on $24,801 to $100,800
- 22% on $100,801 to $211,400
- 24% on $211,401 to $403,550
- 32% on $403,551 to $512,450
- 35% on $512,451 to $768,700
- 37% above $768,700
Credits reduce your withholding on top of the bracket math. The Child Tax Credit is worth up to $2,200 per qualifying child under 17, and a separate Credit for Other Dependents covers qualifying relatives who don’t meet the child credit rules.5Internal Revenue Service. Child Tax Credit When you claim these on your W-4, your employer lowers each paycheck’s withholding to reflect the credits you’ll receive at filing time.
Social Security and Medicare
FICA taxes come out at rates the W-4 does not control. Social Security is withheld at 6.2% of wages, but only up to an annual earnings cap. For 2026, that cap is $184,500, and Social Security withholding stops once your year-to-date earnings pass it.6Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Medicare is withheld at 1.45% on all wages with no cap.7Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
Once your wages at a single employer cross $200,000 in a calendar year, that employer must withhold an additional 0.9% Additional Medicare Tax on the amount above $200,000. The actual filing threshold for the tax varies by status: $250,000 for married filing jointly, $200,000 for single filers, and $125,000 for married filing separately.8Internal Revenue Service. Questions and Answers for the Additional Medicare Tax Because your employer only sees what you earn there, the withholding rule and the filing rule can produce different results. If your household situation triggers a different threshold than the flat $200,000 employer rule, you settle the difference at filing.
State Withholding
State income tax withholding depends on where you work and, sometimes, where you live. Nine states impose no income tax on wages at all. Among the 41 states that do tax wages, roughly 16 use a flat rate and around 25 use graduated brackets similar to the federal system. Top state rates range from under 3% to over 13%, so the same salary can produce very different take-home pay in different states.9Tax Foundation. State Individual Income Tax Rates and Brackets, 2026
If you live in one state and work in another, check whether the two have a reciprocal agreement. About 16 states and the District of Columbia have reciprocity, which lets you pay income tax only to your home state even when your employer is across a state line. Without a reciprocal agreement, you may owe tax in both states, though most states offer a credit for tax paid to the other state to prevent true double taxation. Each taxing state has its own withholding certificate, so expect to fill out a state form alongside the federal W-4.
Finding Your Number With the IRS Estimator
The IRS Tax Withholding Estimator is a free online tool that does the arithmetic for you. It walks through your income, deductions, and credits, then tells you whether your current withholding will leave you owing or refunded. If a change is needed, it generates a pre-filled Form W-4 you can hand to your employer.10Internal Revenue Service. Tax Withholding Estimator
To get an accurate result, have your most recent pay stubs on hand showing year-to-date earnings and withholding, plus your spouse’s pay stubs if you’ll file jointly. Add records for self-employment, investment, or Social Security income if any of those apply. The tool doesn’t ask for your name, Social Security number, or bank information, and nothing is saved after you close the browser.
This step matters most if you have a working spouse, hold more than one job, or bring in meaningful non-wage income. Each employer calculates withholding as if their paycheck is your only income, so multiple sources routinely add up to less withholding than you actually owe. The estimator looks at all of it together and tells you how much extra to request on your W-4.
Turning Your Number Into a W-4
The current Form W-4 no longer uses the old allowances system. Instead, it asks for your filing status, credits for dependents, other income, and any additional withholding amount you want taken from each paycheck.11Internal Revenue Service. Employees Withholding Certificate – Form W-4 2026
Step 1 is filing status. Step 2 handles multiple jobs or a working spouse; the form offers three ways to work through it, and the IRS estimator is the most accurate. Step 3 is where you claim the Child Tax Credit and Credit for Other Dependents, which directly reduces each paycheck’s withholding. Step 4 covers non-wage income, extra deductions beyond the standard amount, and a line where you can request a flat additional dollar amount per pay period.12Internal Revenue Service. About Form W-4, Employees Withholding Certificate
Most employers accept updates through an online payroll portal. Federal rules give an employer up to 30 days to put the new withholding into effect, though many process the change within one or two pay cycles.13Internal Revenue Service. Topic No. 753, Form W-4, Employees Withholding Certificate Check your next pay stub to confirm.
Safe Harbors That Prevent an Underpayment Penalty
You avoid the IRS underpayment penalty entirely if you meet any one of the safe harbor rules. You’re clear if your total tax due after subtracting withholding and credits is under $1,000, or if you paid at least 90% of your current year’s tax liability through withholding and estimated payments. You’re also clear if you paid at least 100% of the prior year’s total tax. Higher earners face a stricter version: if your adjusted gross income exceeded $150,000 the prior year ($75,000 if married filing separately), the prior-year safe harbor jumps to 110%.14Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
The 100% prior-year rule is the most useful one for anyone with unpredictable income. Setting your withholding to match last year’s total tax gives you a guaranteed pass, even if this year turns out much bigger. If you’re short, use Line 4(c) on your W-4 to request a specific extra dollar amount per paycheck to close the gap.
If You Have Non-Wage Income
Withholding covers wages. Income from self-employment, rental property, or investments usually is not subject to automatic withholding, and if you expect to owe $1,000 or more from those sources after accounting for withholding and credits, you generally have to make quarterly estimated tax payments using Form 1040-ES.15Internal Revenue Service. Estimated Taxes A simpler alternative for modest side income is to raise your W-4 withholding at your main job enough to cover it. The IRS treats withholding and estimated payments interchangeably for safe harbor purposes.
When to Redo Your Withholding
Most people fill out a W-4 once and never revisit it. Any major life change can shift your tax picture enough that the old numbers no longer fit. The IRS recommends checking your withholding after getting married or divorced, having a child, starting a second job, or losing a job.16Internal Revenue Service. Managing Your Taxes After a Life Event
Marriage is the most commonly overlooked trigger. Two working spouses combined can push a household into higher brackets than either employer accounts for individually. Having a child usually pushes the other way, adding the Child Tax Credit and reducing what needs to be withheld. A raise, a growing side business, or a year with unusually high investment income are all cues to revisit the W-4. Even in a quiet year, running the estimator once each fall leaves time to adjust before the tax year closes.