Estimated Tax Calculator
US income tax estimator using 2024 federal progressive brackets plus optional flat state tax and deductions.
Estimated Tax Calculator
US income tax estimator using 2024 federal progressive brackets plus optional flat state tax and deductions.
Formula reference
Progressive federal brackets (2024) + optional flat state rate
Income
Gross income before deductions
Deductions
Flat estimate — varies by state
Standard deduction (2024 single ≈ $14,600)
Formula
Progressive federal brackets (2024) + optional flat state rate
Frequently Asked Questions
Which tax year is used?▼
Federal brackets reflect 2024 IRS rates for Single and Married Filing Jointly.
What is marginal vs effective rate?▼
Marginal rate applies to your last dollar earned. Effective rate = total tax ÷ gross income — usually lower.
Should I use standard or itemized deduction?▼
Enter whichever is higher. 2024 standard deduction: ~$14,600 single, ~$29,200 married.
Are FICA taxes included?▼
No. Social Security (6.2%) and Medicare (1.45%) are separate payroll taxes.
How do I estimate state tax?▼
Enter your state's flat effective rate, or use 0 for states with no income tax.
Does this handle capital gains?▼
No. This estimates ordinary income tax only.
What about tax credits?▼
Credits (child tax credit, EITC) are not modeled — results may overestimate tax owed.
Is this suitable for filing?▼
No. Use IRS tools or tax software for actual filing.
How often do brackets change?▼
Brackets are inflation-adjusted annually by the IRS.
Can I compare filing statuses?▼
Yes — switch between Single and Married to compare.
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How This Calculator Works
This Tax Calculator uses industry-standard formulas to produce detailed, actionable results. Enter your values in the grouped sections above, then click **Calculate** to see metrics, breakdowns, and insights.
Formula Reference
Progressive bracket calculation on taxable income after deductions
Interpreting Your Results
Review highlighted metrics first, then check any amortization tables or insight notes below the results. Adjust inputs to compare scenarios — all calculations run instantly in your browser.