US Federal & State Income Tax Bracket Calculator
Calculate your 2026 US federal income tax, FICA, and state taxes based on filing status and 401(k) contributions.
US Federal Tax Calculator
Estimate your 2026 US federal income tax, FICA (Social Security & Medicare), and state tax burden. See how 401(k) pre-tax contributions lower your taxable income.
📝 Income & Tax Status
2026 Standard Deduction: $14,600
Pay Period Net Take-Home Schedule
How the 2026 US Federal Progressive Income Tax System Works
The United States federal income tax is governed by a **progressive tax system** administered by the Internal Revenue Service (IRS). Under a progressive tax structure, your taxable income is divided into brackets, and higher tax rates apply only to income that falls within higher brackets.
Marginal Tax Rate vs. Effective Tax Rate
Your marginal tax rate is the highest tax bracket that your top dollar of income falls into (e.g. 22%). Your effective tax rate is the actual average percentage of your total income paid in tax (e.g. 11.0%). Because lower portions of your salary are taxed at 10% and 12%, your effective tax rate is always lower than your marginal tax rate.
2026 Standard Deductions & Pre-Tax 401(k) Benefits
Before tax rates are applied, the IRS allows taxpayers to subtract standard deductions ($14,600 for Single, $29,200 for Married). Furthermore, every dollar you contribute to a traditional **401(k)** pre-tax account directly reduces your federal taxable income, saving you money at your highest marginal tax rate.
Worked Example: $75,000 Salary (Single Filer)
| Tax Category | Calculation Basis | Tax Amount ($) |
|---|---|---|
| Gross Annual Salary | $75,000 Base Salary | $75,000 |
| Standard Deduction | Single Filer Exemption | -$14,600 |
| Federal Taxable Base | $75,000 - $14,600 | $60,400 |
| Federal Income Tax | Progressive 10%, 12%, 22% slabs | $8,290 |
| FICA (SS + Medicare) | 7.65% flat on gross | $5,738 |
| Net Take-Home Pay | After Fed + FICA + 5% State | $57,222 |
Frequently Asked Questions (FAQ)
What are FICA taxes?
FICA stands for Federal Insurance Contributions Act. It consists of a 6.2% Social Security tax (capped at $168,600) and a 1.45% Medicare tax.
Does entering a higher tax bracket reduce my overall pay?
No! A common misconception is that moving into a higher tax bracket reduces take-home pay. Higher rates apply ONLY to the dollars earned inside that specific bracket.
Educational Purpose Disclaimer
This calculator is provided for informational and educational estimation purposes only. All calculations and projections are based on standard mathematical formulas and assumed inputs. The output values should not be considered professional financial, legal, tax, or medical advice. ProCalc is not a registered financial advisor or licensed practitioner. Always consult a qualified professional (such as a Chartered Accountant, certified planner, or physician) before making major decisions.
What is the US Federal & State Income Tax Bracket Calculator?
The US Federal & State Income Tax Bracket Calculator is a tax estimation tool designed to help US residents project their total tax liabilities, including federal income taxes, FICA payroll taxes, and state income taxes.
The United States utilizes a multi-tiered tax system, making it complex to calculate your actual take-home salary. Your final tax bill depends on several variables:
• Federal Income Tax Brackets: The IRS taxes income progressively across seven brackets (ranging from 10% to 37% for the 2026 tax year). You only pay the tax rate for the income within each specific bracket, rather than a single flat rate.
• Standard Deduction: Before tax brackets are applied, you subtract the standard deduction from your gross income ($14,600 for single filers, $29,200 for married couples filing jointly). This amount is completely tax-free.
• FICA Payroll Taxes: Formed by Social Security (6.2% up to the wage base limit of $168,600) and Medicare (1.45% on all earnings). These payroll deductions apply to your very first dollar of gross income.
• Pre-Tax Contributions: Contributions to employer-sponsored retirement plans like a traditional 401(k) (up to the annual limit of $30,500) reduce your adjusted gross income, yielding immediate tax savings.
• State Income Taxes: States apply their own income tax rates, ranging from 0% (in states like Texas, Florida, and Nevada) to progressive rates exceeding 10% (in California and New York).
This calculator estimates your taxable income after standard deductions and pre-tax 401(k) contributions, applies federal brackets, computes FICA and flat state taxes, and displays your effective tax rate.
How Does the US Federal & State Income Tax Bracket Calculator Work?
Enter gross income, filing status (single, married, head of household), state income tax rate, and pre-tax 401(k) contributions. Results show tax by category and your effective federal rate.
Formula & Calculation Method
Federal tax uses 2026 IRS tax brackets after the standard deduction. FICA = 6.2% SS (capped at $168,600) + 1.45% Medicare on all income. State tax applied as a flat rate on gross income.
Example Calculation
A single filer with $75,000 gross salary pays $8,290 federal income tax, $5,738 FICA tax, and $3,750 state tax (5%), resulting in $57,222 net.
Frequently Asked Questions
Federal tax uses 2026 IRS tax brackets after the standard deduction. FICA = 6.2% SS (capped at $168,600) + 1.45% Medicare on all income. State tax applied as a flat rate on gross income.
Disclaimer: This tool is provided for informational and calculation purposes. Output values are estimates based on standard user inputs.