Your salary and your paycheck are different numbers. This calculator estimates what actually lands in your bank account each pay period after federal tax, FICA, state tax, and the pre-tax deductions you chose during onboarding.
An offer letter quotes gross pay: the headline number before anything is withheld. What you actually spend each month comes from net pay, and the gap between the two is routinely 25 to 30 percent. Nobody hands you this number at signing, which is why people budget against money they will never see and then scramble when the first real deposit arrives.
Four categories come out of almost every American paycheck. Federal income tax, which depends on your filing status and your W-4 settings. FICA, the flat payroll tax that funds Social Security and Medicare. State income tax, which ranges from zero in nine states to over ten percent in a few coastal ones. And pre-tax deductions like your 401(k) and health premium, which technically go to you even though they never touch your checking account.
The order matters more than most people realize. Pre-tax deductions come out first, and they shrink the income that federal and state taxes are calculated on. That is the quiet math behind the advice to at least capture your full employer 401(k) match: every dollar you defer is a dollar that dodges income tax today.
Take a $65,000 salary, single filer, paid biweekly, contributing 6% to a traditional 401(k), paying $150 per check in health premiums, in a state with a 4% income tax. The 401(k) defers $3,900 a year and the premiums cost $3,900, leaving $57,200 of taxable wages. After the $16,100 standard deduction, federal taxable income is $41,100, which lands in the 12% bracket and produces $4,684 of federal tax. FICA takes 7.65% of the full salary, or $4,972.50. State tax on the reduced wages is $2,288.
Total withholding comes to $11,944.50, about 18.4% of gross. Add the $7,800 you directed into your 401(k) and premiums, and net annual pay is $45,255.50, or $1,740.60 per biweekly check against a gross of $2,500. Roughly 70% of your salary reaches your bank account, and a meaningful slice of the rest is savings you chose, not money you lost.
On that same $65,000 example, the split looks like this:
| Category | Annual | Per biweekly check |
|---|---|---|
| Gross pay | $65,000 | $2,500.00 |
| 401(k) + health premiums (pre-tax) | $7,800 | $300.00 |
| Federal income tax | $4,684 | $180.15 |
| FICA (Social Security + Medicare) | $4,972.50 | $191.25 |
| State income tax | $2,288 | $88.00 |
| Net take-home pay | $45,255.50 | $1,740.60 |
Notice what FICA does that income tax does not: it applies to your full gross salary with no standard deduction and no 401(k) relief. Health premiums escape income tax but still carry FICA in most cafeteria plans. That asymmetry surprises people comparing two job offers with different benefits structures.
Once you know your real monthly deposit, budgeting stops being guesswork. Pair this page with the 50/30/20 budget calculator to split net pay into needs, wants, and savings, or with the hourly to salary converter if you are comparing a wage offer against a salaried one. If the 401(k) lever caught your attention, the retirement withdrawal calculator shows what those deferred dollars are worth on the other side.
Start with gross pay for the period, subtract pre-tax deductions such as traditional 401(k) contributions and health premiums, then subtract federal income tax, FICA (6.2% Social Security up to the wage base plus 1.45% Medicare), and your state income tax. What remains is your net paycheck. On a $65,000 salary with typical deductions, net pay lands around 70% of gross.
Because the salary figure on your offer letter is gross pay. Federal income tax, Social Security, Medicare, state and sometimes local taxes, and benefit premiums all come out before the money reaches your bank account. Combined they usually remove 20 to 35 percent, depending on your state, filing status, and elections.
A traditional 401(k) contribution lowers your taxable income, so it reduces the federal and usually the state income tax withheld, though your net check is still smaller than it would be with no contribution. A Roth 401(k) contribution comes out after tax, so it reduces your paycheck by the full amount and saves you nothing this year. The trade is a tax break now against a tax break in retirement.
Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming levy no state income tax on wages, and New Hampshire taxes only interest and dividends. Living in one of these states raises take-home pay by roughly 3 to 7 percent compared with a mid-rate state, which is one reason identical salaries feel very different in different cities.
Real paychecks include things this estimate leaves out: local city or county taxes, your specific W-4 settings, Roth contributions, supplemental insurance premiums, union dues, wage garnishments, and employer plans with unusual rules. Federal figures also update every year. Treat the result as a solid planning number, and use your first pay stub to fine-tune.
All calculation logic on this page is implemented from the primary documents below. Each one is listed with the figure it supplies, so any rate or threshold in the result can be traced back to its published source.
Current-year brackets and withholding rules, with the source named.