Say a US employer offers you $80,000. If you live in California and file as single, the amount that lands in your account every two weeks is $2,371 — $61,643 over the year. $18,357 disappears between the offer and the bank.
What surprises people arriving from Korea is that the deductions come in four separate layers: federal income tax, Social Security, Medicare, and state income tax. That last one is why the same salary is worth over $3,000 more a year in one state than another. Put your own numbers in below.
| Gross (annual) | 0 |
| Pre-tax deductions | 0 |
| Federal income tax | 0 |
| Social Security 6.2% up to $184,500 | 0 |
| Medicare 1.45% | 0 |
| Additional Medicare 0.9% | 0 |
| State income tax | 0 |
| Total deductions (annual) | 0 |
Estimate using 2026 federal brackets and standard deductions. Assumes the standard deduction and no credits. Local/city taxes (e.g. NYC) and state disability (e.g. CA SDI) are not included. Your actual paycheck depends on your W-4, benefits, and local rules.
Where the $18,357 goes
The deduction rows from the screen above, in order. The order matters, because each item is charged on a different base.
| Item | Per year | Charged on | Rate |
|---|---|---|---|
| Gross salary | $80,000 | — | — |
| Federal income tax | $8,770 | Salary − $16,100 standard deduction | 10–37% by bracket |
| Social Security | $4,960 | Full salary, but only up to $184,500 | 6.2% |
| Medicare | $1,160 | Full salary, no cap | 1.45% |
| State income tax (California) | $3,467 | Salary − $5,540 state standard deduction | 1–13.3% by bracket |
| Total withheld | $18,357 | — | 22.9% effective |
| Take-home | $61,643 | Paid biweekly: $2,371 × 26 | — |
The usual objection at this point is "I'm in the 22% bracket, shouldn't that be $17,600?" The actual federal tax is $8,770 — 11.0%. The next section shows why.
Federal tax is sliced, not multiplied
US federal income tax never applies one rate to your whole income. Each slice of income is taxed at its own rate, and a higher rate only touches the part above that threshold. The 2026 single-filer brackets:
| Taxable income | Rate | Tax from this slice at $80,000 |
|---|---|---|
| $0 – $12,400 | 10% | $1,240 |
| $12,400 – $50,400 | 12% | $4,560 |
| $50,400 – $105,700 | 22% | $2,970 |
| $105,700 – $201,775 | 24% | — |
| $201,775 – $256,225 | 32% | — |
| $256,225 – $640,600 | 35% | — |
| Over $640,600 | 37% | — |
| Total | $8,770 | |
Follow it through: $80,000 minus the $16,100 standard deduction leaves $63,900 of taxable income. That gets sliced across the 10%, 12% and 22% bands. Only the $13,500 above $50,400 is taxed at 22%, which is where the $2,970 comes from.
So "being in the 22% bracket" means the next dollar you earn is taxed at 22% — not your whole salary. The real burden here is 11.0%. Full bracket tables are in US tax brackets explained.
Same salary, different state
Federal tax, Social Security and Medicare are identical wherever you live. Only the state line moves — and it moves by more than $3,000. Five states at $80,000, filing single:
| State | State tax | Take-home | Per paycheck | Effective rate |
|---|---|---|---|---|
| Texas (no income tax) | $0 | $65,110 | $2,504 | 18.6% |
| Pennsylvania (flat 3.07%) | $2,456 | $62,654 | $2,410 | 21.7% |
| Colorado (flat 4.4%) | $2,812 | $62,298 | $2,396 | 22.1% |
| California (1–13.3%) | $3,467 | $61,643 | $2,371 | 22.9% |
| New York (4–10.9%) | $3,795 | $61,315 | $2,358 | 23.4% |
Texas against New York is $3,795 a year, $316 a month — the same effect as negotiating 4.7% more salary.
Eight states levy no personal income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas and Wyoming. Washington taxes capital gains but not wages. One caveat: there is no single federal page that lists this, because each state sets its own regime; the list above follows the Tax Foundation's 2026 survey. State-by-state detail continues in US state taxes.
The W-4 stopped counting dependents in 2020
The W-4 you fill in on your first day decides how much your employer withholds. One thing catches out almost everyone who last saw the old form: allowances were removed in the 2020 redesign. There is no such box any more.
The current form has five steps.
- Step 1 — name, address, SSN, filing status
- Step 2 — only if you hold two jobs or your spouse also works. Leaving this blank is the most common reason people owe money at filing time
- Step 3 — child and dependent credits entered as a dollar amount, not a headcount
- Step 4 — other income, extra deductions, any extra withholding you want
- Step 5 — signature
To check whether your withholding is right, the IRS runs a Tax Withholding Estimator. Over-withholding does come back as a refund, but your money sits with the government for up to a year in the meantime.
Pre-tax deductions cut the tax and the paycheck
Items taken out before tax is calculated — 401(k), health premiums, HSA — reduce your taxable income. The 2026 limits:
| Item | 2026 limit | Catch-up |
|---|---|---|
| 401(k) employee deferral | $24,500 | $8,000 from age 50 / $11,250 at ages 60–63 |
| HSA (self-only) | $4,400 | $1,000 from age 55 |
| HSA (family) | $8,750 | |
| Health FSA | $3,400 | $680 carryover |
One point worth spelling out. Enter $8,000 of pre-tax deductions in the calculator above and your tax falls by $2,450, but your take-home falls by $5,550. The eight thousand went into a retirement account. It is not money lost — it is money moved, and the price of moving it was negative $2,450 in tax.
Employer matching changes the arithmetic again: a match is an immediate return on the contribution, which is why contributing at least up to the match is usually worth it. The mechanics are in the 401(k) guide, and individual accounts in the IRA guide.
What this calculator does not include
It assumes a wage earner taking the standard deduction. Deliberately left out:
- Itemized deductions — mortgage interest, state and local taxes (SALT), charitable giving. Only worth it above the standard deduction, and entirely person-specific.
- Tax credits — the Child Tax Credit, EITC and others. These cut the tax itself, not taxable income, so they move the result substantially.
- City and county income taxes — New York City and many Ohio and Pennsylvania municipalities levy their own. The New York row above is state only; a NYC resident pays more.
- State-specific credits and deductions — only each state's standard deduction and rate bands are modelled.
- Additional Medicare tax of 0.9% is in the code but does not apply at $80,000. It starts above $200,000 single, $250,000 married filing jointly.
- Per-period rounding — a real paystub reconciles to the cent each cycle.
Take-home by salary band is tabulated in the US salary table, and selling stock is covered in US capital gains tax. For an actual filing decision, confirm with a CPA or enrolled agent.
Sources and where to verify
- IRS — tax year 2026 inflation adjustments (bracket thresholds, standard deduction $16,100 single / $32,200 joint, Health FSA $3,400)
- IRS — 2026 retirement plan limits ($24,500; $8,000 catch-up from 50; $11,250 at 60–63)
- IRS — Additional Medicare Tax (0.9% above $200,000 single / $250,000 joint / $125,000 married filing separately)
- IRS — Form W-4 (PDF) / Tax Withholding Estimator
- SSA — 2026 COLA fact sheet (6.2% Social Security on wages up to $184,500; Medicare 1.45% with no cap)
- IRS — Publication 969 (HSA limits and the $1,000 catch-up from 55)
Written as of July 2026. Federal figures are transcribed from the IRS and SSA pages above, and the on-screen values were reconciled against an independent calculation to the dollar before the screenshot was taken. State rates and standard deductions are published separately by each state's revenue department, and no single federal page collects them, so those could not be checked against a primary source. Treat the state figures as estimates and confirm against your own state's revenue department. This is not tax advice.
