Question 1

How does this paycheck calculator work?

Accepted Answer

Enter your gross pay (salary or hourly rate), filing status, and work state. The calculator sends your inputs to the same tax engine that powers our paystub generator — using IRS withholding tables and each state's published rates — and returns a breakdown of federal tax, state tax, Social Security, Medicare, and your estimated net pay. Results update automatically as you change any field.

Question 2

What's the difference between gross pay and net pay?

Accepted Answer

Gross pay is what your employer owes you before anything is taken out — your full salary or hourly wages for the pay period. Net pay (also called take-home pay) is what actually hits your bank account after federal tax, state tax, FICA, and any pre-tax deductions are subtracted. The formula is: gross pay minus taxes minus deductions equals net pay.

Question 3

How is federal income tax calculated?

Accepted Answer

Federal income tax uses a progressive bracket system — you don't pay a single flat rate on all your income. Instead, each portion of your taxable income is taxed at an increasing rate as it moves through the brackets. For 2026, rates range from 10% to 37%. Your filing status determines which bracket thresholds apply. The calculator uses the IRS percentage method from Publication 15-T to estimate per-period withholding, the same approach payroll software uses.

Question 4

What are Social Security and Medicare taxes?

Accepted Answer

Social Security and Medicare are collectively known as FICA (Federal Insurance Contributions Act) taxes. Every worker pays them regardless of filing status or state. Social Security is 6.2% of wages up to the 2026 wage base of $182,100 — once your year-to-date earnings pass that cap, withholding stops for the rest of the year. Medicare is 1.45% on all wages with no cap. Earnings above $200,000 ($250,000 for married filing jointly) trigger an additional 0.9% Medicare surtax, bringing the total to 2.35%.

Question 5

What is pay frequency and how does it affect my paycheck?

Accepted Answer

Pay frequency is how often your employer runs payroll — weekly (52 checks/year), bi-weekly (26), semi-monthly (24), or monthly (12). Your annual salary doesn't change, but the per-period amount does. A $52,000 salary works out to $1,000 weekly, $2,000 bi-weekly, $2,166.67 semi-monthly, or $4,333.33 monthly. Tax withholding per check adjusts proportionally — smaller checks have less withheld, but the annual total is the same.

Question 6

What's the difference between a deduction and a withholding?

Accepted Answer

Withholdings are taxes your employer is legally required to send to the government on your behalf — federal income tax, state income tax, Social Security, and Medicare. Deductions are amounts subtracted for benefits you've opted into: health insurance, 401(k), HSA, FSA, and so on. Pre-tax deductions (like a traditional 401(k) or health insurance premiums) reduce your taxable income before withholdings are calculated, lowering your tax bill. Post-tax deductions (like a Roth 401(k)) are taken out after taxes.

Question 7

How does filing status affect my paycheck?

Accepted Answer

Your filing status determines which tax bracket thresholds and standard deduction apply to you. Single and married filing separately use the same brackets. Married filing jointly gets thresholds roughly double those of single filers, meaning more income is taxed at lower rates. Head of household falls between single and married — you qualify if you're unmarried and pay more than half the cost of maintaining a home for a qualifying dependent. Choosing the correct status directly changes how much federal tax is withheld from every paycheck.

Question 8

Do some states have no income tax?

Accepted Answer

Yes. Nine states don't tax wages or salary income: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. If you work in one of these states, the calculator will show $0 for state income tax. Keep in mind that no-income-tax states often offset that through higher sales taxes, property taxes, or other levies.

Question 9

How can I increase my take-home pay?

Accepted Answer

The most direct lever is maximizing pre-tax deductions. Every dollar you put into a traditional 401(k), HSA, or FSA reduces your taxable income — meaning less withheld from each check. Other things worth reviewing: make sure your W-4 reflects your current situation (dependents, additional deductions), check whether you qualify for head of household filing status, and verify your state on file with payroll if you've moved. Use this calculator to test different scenarios before making changes.

St. Louis Paycheck Calculator

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