Overview of Biden's Tax Proposals
The Biden administration's tax framework aims to fund infrastructure and social spending by modifying the tax code for high-income earners and families. Key changes include raising the individual income tax rate from 37% to 39.6% for filers earning above $400,000, though lower brackets remain largely unchanged. The plan also expands child-related tax benefits and the Earned Income Tax Credit to support working families.
- Top rate increase: 37% → 39.6% for income above $400,000
- Child tax credit expansion: Up to $3,600 for children under 6; $3,000 for ages 6–17
- Child and dependent care credit: Increased from $3,000 to $8,000 per dependent (capped at $16,000)
- EITC expansion: Extended eligibility to childless workers aged 25–64 earning under $21,000
- Corporate minimum tax: 15% minimum on book income for large corporations
Tax Calculation Method
The calculator determines your tax liability by applying the relevant tax bracket schedule to your adjusted gross income (AGI), then applies any eligible credits. The effective tax rate shows what percentage of your total income goes to federal taxes.
Effective Tax Rate = (Total Tax Paid ÷ Annual Income) × 100%
Tax Liability = Tax from Brackets − Eligible Credits
Where tax from brackets depends on your filing status (single, married filing jointly, head of household, etc.) and the income thresholds set by the tax code.
Annual Income (AGI)— Total gross income minus specific adjustments like pre-tax retirement contributions and student loan interestFiling Status— Your tax classification: single, married filing jointly, married filing separately, head of household, or qualifying widow(er)Tax Brackets— The progressive income ranges and corresponding rates that determine tax owed based on AGITax Credits— Direct reductions in tax owed, including child tax credit, dependent care credit, and EITC
Key Differences from Current Law
While middle-income households see minimal changes, families with children and single parents benefit most from expanded credits. High earners above the $400,000 threshold face a 2.6 percentage point rate increase on income above that level.
- Middle income earners (under $400k): Tax brackets unchanged; may gain from enhanced family credits
- High earners ($400k+): Additional 2.6% on income exceeding the threshold
- Families with young children: Child tax credit increases by $1,600–$1,000 per child
- Low-wage workers: EITC expansion provides new eligibility paths and higher maximum credits
- Childcare costs: Enhanced credit may offset up to $8,000 in annual care expenses per dependent
Common Mistakes and Considerations
Several factors affect how accurately this calculator estimates your actual tax bill.
- AGI vs. gross income — The calculator uses adjusted gross income, which excludes certain deductions (401k contributions, IRA deductions, student loan interest). Ensure you're entering AGI from your most recent tax return, not your gross salary, to avoid overstating your taxable income.
- Filing status matters significantly — Married couples filing jointly reach higher income thresholds before hitting the 39.6% rate than single filers. Head of household filers benefit from different brackets. Confirm your actual filing status rather than assuming based on marital status alone.
- Phase-outs and income limits — Many credits, including the child tax credit and EITC, phase out at specific income levels. If you're near a threshold, small income variations can substantially change your benefit eligibility and effective tax rate.
- State and local taxes not included — This calculator shows federal income tax only. Your total tax burden also includes state income tax, FICA, and potentially alternative minimum tax (AMT) if you have high income or certain deductions.
Who Qualifies for Enhanced Credits
The expanded tax benefits in Biden's plan target families with dependent children and lower-income working adults. Understanding eligibility ensures you claim all credits you're entitled to.
- Child tax credit: Families with children under 17; partially refundable up to $1,700 per child
- Earned Income Tax Credit: Workers without children aged 25–64 earning under $21,000; families with dependents; full-time students aged 19–23
- Child and dependent care credit: Families paying for childcare, eldercare, or adult care to enable work; credit up to $8,000 in eligible expenses
- Income thresholds: Credits begin phasing out as income exceeds specified limits, which vary by credit type and filing status