Key takeaways
- With only the 2026 standard deduction, federal income tax on $60,000 of wages is $5,020 for a single filer and $2,840 for married filing jointly.
- Project your withholding by dividing year-to-date federal tax by paychecks received, then multiplying by the number of paychecks in the year.
- Two married earners on $60,000 each, each withheld as a one-earner household, have about $5,680 withheld against $10,040 owed, a $4,360 gap.
- The IRS generally waives the underpayment penalty if you owe under $1,000, or withholding covers 90 percent of this year’s tax or 100 percent of last year’s.
To check your federal tax withholding for 2026, compare two numbers: the federal income tax you expect to owe for the year, and the amount your paychecks will have withheld by December. You get the first from the 2026 brackets and standard deduction. You get the second from your latest pay stub: divide the year-to-date federal withholding by the number of paychecks so far, then multiply by the number of paychecks in the year. If the projection falls short, add extra withholding on a new Form W-4 now, while there are paychecks left to spread it over.
Step 1: estimate your 2026 federal income tax
For wage income with the standard deduction, the 2026 calculation is short. Subtract the standard deduction ($16,100 for single filers, $32,200 for married filing jointly) and any pre-tax deductions such as 401(k) contributions, then apply the brackets. If you are paid by the hour, turn your rate into an annual figure first with our hourly to salary calculator.
| Rate | Single, taxable income | Married filing jointly, taxable income |
|---|---|---|
| 10% | Up to $12,400 | Up to $24,800 |
| 12% | $12,400 to $50,400 | $24,800 to $100,800 |
| 22% | $50,400 to $105,700 | $100,800 to $211,400 |
| 24% | $105,700 to $201,775 | $211,400 to $403,550 |
| 32% | $201,775 to $256,225 | $403,550 to $512,450 |
| 35% | $256,225 to $640,600 | $512,450 to $768,700 |
| 37% | Over $640,600 | Over $768,700 |
A single filer on $60,000 has $43,900 of taxable income. The first $12,400 is taxed at 10% ($1,240) and the remaining $31,500 at 12% ($3,780), so the 2026 federal income tax is $5,020.
Here is the same calculation at six salaries, assuming wages only, no pre-tax deductions and no credits (for married couples, one earner):
| Annual wages | Single | Married filing jointly |
|---|---|---|
| $40,000 | $2,620 | $780 |
| $60,000 | $5,020 | $2,840 |
| $80,000 | $8,770 | $5,240 |
| $100,000 | $13,170 | $7,640 |
| $150,000 | $24,734 | $15,340 |
| $200,000 | $36,734 | $26,340 |
These figures are income tax only. Social Security (6.2% up to $184,500 of wages) and Medicare (1.45%, plus 0.9% above $200,000) are withheld separately and are rarely the cause of a surprise bill. Credits such as the child tax credit reduce the figure; extra income raises it.
Step 2: project your withholding from a pay stub
Find the year-to-date federal income tax line on your most recent regular pay stub. Divide it by the number of paychecks you have received this year, then multiply by your total paychecks for the year: 52 weekly, 26 biweekly, 24 semi-monthly or 12 monthly.
Suppose you are single, earn $75,000 and are paid every two weeks. Your estimated 2026 tax is $7,670, which works out to $295 per paycheck. After 20 paychecks your stub shows $5,200 withheld, or $260 per paycheck. At that pace you will have $6,760 withheld by year end, $910 short.
There are six paychecks left, so asking for about $152 of extra withholding per paycheck closes the gap. That figure goes in Step 4(c) of a new W-4.
Why withholding drifts from your actual tax
Two jobs, or two earners filing jointly. Each employer withholds as if its paycheck were your only income. Take a married couple who each earn $60,000. If each job withholds as though it were the couple's only income, each withholds about $2,840, or $5,680 in total. Their actual tax on $120,000 of joint wages is $10,040, leaving them about $4,360 short. Step 2 of the W-4 exists for exactly this.
Income with no withholding. Freelance work, interest and investment income usually have nothing taken out. An extra $10,000 for a single filer on $75,000 adds $2,200 of federal income tax at the 22% rate, before any self-employment tax.
Changes during the year. A raise, a bonus, a new job or a change in your 401(k) contribution all change the right amount. For example, putting 6% of a $75,000 salary into a traditional 401(k) lowers the estimated 2026 tax from $7,670 to $6,680.
Credits that no longer apply. If you claimed a child on Step 3 of your W-4 and that child no longer qualifies, your withholding is too low from that point on.
The W-4, step by step
The current Form W-4 has five steps. Most people only need the first and last:
- Step 1: your name and filing status.
- Step 2: multiple jobs, or a spouse who also works. Use it so withholding reflects your combined income.
- Step 3: dependents and other credits, which reduce withholding.
- Step 4(a): other income without withholding, such as interest. 4(b): deductions beyond the standard deduction. 4(c): a flat extra amount to withhold each pay period.
- Step 5: sign and date.
If you have more than one job, complete Steps 3 to 4(b) on only one W-4, usually the one for the highest-paying job.
When a shortfall becomes a penalty
Owing at filing time is not automatically a penalty. According to the IRS, you generally avoid the underpayment penalty if you owe less than $1,000 after withholding and refundable credits, or if your withholding and estimated payments cover at least 90% of this year's tax or 100% of last year's. If your prior-year adjusted gross income was more than $150,000 ($75,000 if married filing separately), the prior-year test is 110%.
The IRS Tax Withholding Estimator
The IRS has its own free Tax Withholding Estimator. It asks for your recent pay stubs (and your spouse's, if you file jointly) and, if you have other income or may itemize, your most recent return. It handles credits, multiple jobs and other income, and it can produce a pre-filled W-4 to give your employer. It is the most complete check available.
What our Paycheck Calculator models
Our Paycheck Calculator gives a quick per-paycheck view. You choose your state, pay frequency and filing status, enter an annual salary, hourly rate or gross pay per period, and can add a 401(k) percentage and pre-tax health premiums. It applies the 2026 federal brackets and standard deduction to your annual pay and divides by the number of pay periods, then adds Social Security, Medicare and state tax.
What it does not model: filing statuses other than single and married filing jointly, W-4 entries such as Steps 2 to 4, tax credits, other income, local or city taxes, and the IRS Publication 15-T method employers actually use. Treat its federal line as an estimate of what you will owe, which is exactly what step 1 needs, rather than a copy of your employer's withholding. For a plain-English guide to every line on a stub, see what every paycheck deduction means.
These figures use 2026 rates and are a planning guide, not tax advice. If your situation includes self-employment, large investment income or credits, the IRS estimator or a tax professional will give a more reliable answer.
Frequently asked questions
Estimate your 2026 federal income tax from the brackets and standard deduction, then project your withholding from a recent pay stub: year-to-date federal tax divided by paychecks so far, times paychecks in the year. If the projection is lower than your estimated tax, increase withholding on a new W-4 using Step 4(c).
For the 2026 tax year it is $16,100 for single filers and married filing separately, $32,200 for married filing jointly and $24,150 for head of household. It is subtracted from income before the brackets are applied, so a single filer on $60,000 of wages pays tax on $43,900.
Each employer withholds as if its paycheck were the household’s only income, so both apply the lowest brackets. Two $60,000 jobs withheld that way total about $5,680, but the joint tax on $120,000 is $10,040 in 2026. Completing Step 2 of the W-4 on one or both jobs fixes most of the gap.
Not necessarily. The IRS generally does not charge the underpayment penalty if you owe less than $1,000 after withholding and refundable credits, or if you paid at least 90% of this year’s tax or 100% of last year’s through withholding and estimated payments. The prior-year test rises to 110% above $150,000 of AGI.
No. It applies the 2026 federal brackets and standard deduction to your annual pay and divides by your pay periods, which estimates the tax you will owe. Employers use the IRS Publication 15-T tables and your W-4 entries, which the calculator does not model, along with credits and other income.