Enter your income first, then select a program

Your Contribution = (Your Income Tax Paid / Total Federal Income Tax Dollars) x Programs Tax Dollars

Income Tax Approximation: We subtract the standard deduction from your gross income to get taxable income, then apply federal marginal tax brackets (each bracket has a rate applied to income in that range). This gives an estimate of your federal income tax paid.

Federal spending data is sourced directly from www.usaspending.gov/agency

Disclaimer: This estimate shows federal income tax only (tax on taxable income after the standard deduction, which is applied by default). It does not include payroll taxes (Social Security/Medicare), tax credits, itemized deductions, capital gains treatment, the AMT, state or local taxes, pre-tax retirement contributions, or other adjustments. Use this as an informational approximation only and consult a tax professional for a precise result.
This calculator estimates your share of federal income tax allocated to Social Security and Medicare spending, not your actual payroll tax contribution. Social Security and Medicare are primarily funded by payroll taxes, which are not calculated here.

I learned a lot by making this project, but I am no tax expert. I will continually try to make this calculation more accurate. These numbers should be taken with a grain of salt. -G