🏛️ Federal Income Tax
Calculated using IRS tax brackets based on filing status and income. Withholding is estimated from your
W-4 allowances. 2026 brackets apply progressive rates from 10% to 37%.
💳 FICA Taxes
Social Security: 6.2% on wages up to $168,600 (2026). Medicare: 1.45%
on all wages, plus 0.9% additional on wages over $200k. Employer matches both.
🏠 State Taxes
Varies by state. Some have no income tax (TX, FL, WA, NV, TN, WY, SD, AK, NH). Others range from ~3% to
13%. Check your state's specific rates and brackets.
📉 Pre-Tax Deductions
401(k), health insurance, HSA/FSA reduce taxable income, lowering your tax burden. Max
401(k) for 2026: $23,000 ($30,500 if 50+).
How do I calculate an employee's paycheck?
Formula: Gross Pay - Pre-Tax Deductions = Taxable Income. Then:
Taxable Income - Taxes (Federal, State, FICA) = Net Pay. This calculator automates all calculations
based on your inputs.
What is FICA tax and how much is it?
FICA = Social Security + Medicare. Employees pay 6.2% SS (up to
wage base) + 1.45% Medicare = 7.65% total. Employers match this amount, so total FICA is 15.3% of wages.
What is the difference between gross and net pay?
Gross pay is total earnings before any deductions. Net
pay (take-home) is what remains after taxes and deductions. Net = Gross - Taxes -
Deductions.
How do I calculate federal tax withholding?
Based on IRS Publication 15-T using filing status, pay frequency,
and W-4 allowances. Use IRS withholding tables or this calculator for estimates. Actual withholding
follows IRS percentage method.
What are pre-tax vs post-tax deductions?
Pre-tax (401k, health insurance, HSA) reduces taxable income,
lowering taxes. Post-tax (Roth 401k, life insurance, garnishments) comes from after-tax
income. Pre-tax saves more money.
How much should I withhold for 401(k)?
Common recommendation: 10-15% of gross pay. At minimum, contribute
enough to get your employer's full match (free money!). 2026 limit: $23,000 ($30,500 if age 50+).
Which states have no income tax?
Nine states have no income tax: Alaska, Florida, Nevada, New
Hampshire (dividends only), South Dakota, Tennessee, Texas, Washington, Wyoming. This increases
take-home pay significantly.
What is the employer's share of payroll taxes?
Employers pay: 6.2% Social Security (matching employee),
1.45% Medicare (matching), FUTA 0.6% on first $7,000, plus state
unemployment (SUTA varies). Total ~8-10% above salary.
How does overtime affect paycheck calculations?
Overtime is typically 1.5x regular rate (time and a half). Add OT
pay to regular pay for gross pay. All taxes apply to total gross. California requires 2x after 12 hours.
What is the Social Security wage base for 2026?
The 2026 SS wage base is $168,600. The 6.2% tax only applies to
wages up to this amount. Wages above aren't subject to SS tax (but Medicare has no limit).
How do I handle bi-weekly vs semi-monthly pay?
Bi-weekly: 26 pay periods/year (every 2 weeks).
Semi-monthly: 24 pay periods/year (1st and 15th). This affects per-period calculations.
Annual amounts are the same.
What is an effective tax rate?
Effective rate = Total Taxes ÷ Gross Income. Unlike marginal rate
(highest bracket), effective rate shows your actual overall tax burden. It's always lower than marginal
rate due to progressive brackets.
How do W-4 allowances affect withholding?
More allowances = less tax withheld per paycheck. Each allowance reduces taxable
income for withholding purposes. Note: 2020+ W-4 uses different method without
traditional allowances.
Can I use this for independent contractors?
No. Contractors (1099) pay self-employment tax (15.3% FICA) and no
employer withholding. They're responsible for quarterly estimated taxes. This calculator is for W-2
employees only.
What deductions are required by law?
Required: Federal income tax, state/local income tax (where
applicable), Social Security, Medicare. Optional: 401k, health insurance, HSA/FSA, life
insurance, etc.
How often should employees be paid?
State laws vary. Most common: Bi-weekly (26x/year) or
Semi-monthly (24x/year). Some states require weekly for certain workers. Check your
state's pay frequency laws.
How accurate is this paycheck calculator?
Provides estimates using 2026 tax rates. Actual amounts depend on
complete W-4 info, state/local taxes, and employer policies. Always verify with payroll software or
accountant.