Income Tax Calculator

Estimate your annual and per-pay-period take-home income after federal income tax, state income tax, local tax, Social Security, Medicare, 401(k), and HSA deductions.

What This Tax Calculator Estimates

• Annual gross income based on your selected income frequency
• Federal taxable income after standard deduction and selected pre-tax deductions
• Estimated federal income tax using progressive tax brackets
• Estimated state income tax using flat, progressive, or no-tax state rules
• Local income tax based on your entered local tax rate
• Social Security tax, subject to the annual wage base limit
• Medicare tax, including Additional Medicare Tax where applicable
• 401(k) and HSA pre-tax deductions, subject to annual contribution limits
• Annual net income and net income per selected pay frequency
• Marginal tax rate and effective tax rates

How the Tax Calculator Works

The calculator first converts your entered gross income into an annual amount based on the selected income frequency. For example, monthly income is multiplied by 12, weekly income by 52, bi-weekly income by 26, and hourly income by 2,080 hours per year.

Next, the calculator subtracts eligible pre-tax deductions, such as 401(k) and HSA contributions, from your gross income. Federal taxable income is further reduced by the standard deduction associated with your filing status.

Federal income tax is calculated using a progressive tax bracket system. This means income is taxed in layers: lower portions of income are taxed at lower rates, while only the income within higher brackets is taxed at higher rates.

State income tax is calculated according to the selected state. Some states have no individual income tax, some use a flat tax rate, and others use progressive tax brackets. Local tax, if entered, is applied separately.

The calculator also estimates FICA taxes, including Social Security and Medicare. Social Security tax is applied up to the annual wage base limit, while Medicare tax is generally applied to all wages, with an additional Medicare tax for income above certain thresholds.

Disclaimer

This tax calculator is provided for general informational and educational purposes only. It provides an estimate based on the information you enter and the tax assumptions built into the calculator. It should not be considered tax, legal, accounting, payroll, or financial advice.

Actual tax liability may differ due to credits, itemized deductions, dependents, additional income, self-employment income, retirement plan rules, state-specific deductions, local taxes, payroll withholding elections, phaseouts, and other factors not included in this calculator.

Tax laws, rates, limits, deductions, and thresholds may change. Always verify current rules with official government sources or consult a qualified tax professional before making financial or tax decisions.

References

For official tax guidance, tax forms, withholding information, and current federal tax rules, please refer to the following government resources:

• Internal Revenue Service IRS.gov
• IRS Federal Income Tax Rates and Brackets
• IRS 401(k) Plans Information
• IRS Publication 969: Health Savings Accounts and Other Tax-Favored Health Plans
• Social Security Administration Contribution and Benefit Base
• IRS Topic No. 560: Additional Medicare Tax