free tax tool • federal estimate

Free Tax Bracket Calculator — See Exactly How Much You Owe

Estimate taxable income, federal tax owed, effective rate, marginal tax rate, and how much each bracket contributes to the final number. You can compare standard versus itemized deductions, include common pre-tax savings, and see how 401(k) and HSA contributions lower the bill.

Enter your tax inputs

Use this for payroll deductions or other pre-tax adjustments you want to include in the estimate.

Uses 2025 federal tax bracket assumptions and does not include payroll taxes, credits, AMT, or state income tax.

Your estimate

Taxable income
$0
Federal tax owed
$0
Effective tax rate
0.0%
Marginal tax rate
0%

Enter your numbers to see how pre-tax savings and deductions change your estimated federal tax.

Savings from pre-tax contributions

401(k) tax savings
$0
Estimated tax avoided from your current 401(k) contribution.
HSA tax savings
$0
Estimated tax avoided from your current HSA contribution.

Bracket breakdown

See how much of your taxable income lands in each federal bracket and how much tax each layer creates.

RateIncome taxedTax from bracketVisual share

How to read the result

Effective rate

Your effective rate is total federal income tax divided by gross income, so it is usually much lower than your top bracket.

Marginal rate

Your marginal rate is the rate applied to the next dollar of taxable income. That is why additional 401(k) or HSA dollars can be especially valuable in higher brackets.

Deduction mode

Switch between standard and itemized deductions to see which assumption produces the lower taxable income in your estimate.

Want more ways to lower the number?

The Taxable Income Reducer turns bracket math into action with contribution stacking, deduction checklists, capital-gains timing, charitable strategies, and tax-loss harvesting guidance.

See the Taxable Income Reducer →

Planning estimate only • not tax advice