Tax Calculator
Estimate your federal income tax based on filing status, income, deductions, and tax brackets.
Standard deduction for Single: $16,100
Your Results
Enter your income details and click calculate.
What This Calculator Does
This federal income tax calculator estimates your tax liability based on filing status, gross income, deductions, and the progressive 2026 U.S. tax brackets. It shows both the marginal and effective tax rates to help you understand your true tax burden.
The Formula
The U.S. uses a progressive tax system where income is taxed at increasing rates as it passes through each bracket. Your taxable income equals gross income minus deductions. Each dollar is taxed only at the rate for the bracket it falls within.
Step-by-Step Example
Determine gross income
Enter your total annual income before any deductions. For example, $85,000 gross salary.
Subtract deductions
Choose the standard deduction ($16,100 for single filers) or enter your itemized deductions. Taxable income = $85,000 - $16,100 = $68,900.
Apply bracket rates
The first $12,400 is taxed at 10%, the next portion at 12%, then 22%, and so on until all taxable income is covered.
Review effective rate
Your effective tax rate (total tax / gross income) is typically much lower than your marginal bracket rate.
Real-World Use Cases
Tax Planning
Estimate your tax bill before filing season to avoid surprises and plan deductions accordingly.
Salary Negotiation
Understand take-home pay implications of a raise by seeing how higher income impacts your tax bracket.
Freelancer Quarterly Estimates
Self-employed individuals can use this to estimate quarterly tax payments.
Common Mistakes to Avoid
Confusing marginal tax rate with effective tax rate. Your marginal rate applies only to the last dollar earned.
Forgetting to subtract deductions before applying tax brackets.
Not accounting for state and local taxes, which are separate from federal taxes.
Ignoring tax credits, which reduce your tax bill directly (not just taxable income).
Frequently Asked Questions
Accuracy and Disclaimer
This calculator is for estimation purposes only and does not account for all tax situations including credits, alternative minimum tax, self-employment tax, or state/local taxes. Consult a certified tax professional or CPA for accurate tax advice.
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