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Simple Tax Estimator

Estimate your federal income tax brackets, effective tax rate, and take-home pay.

Reviewed & Maintained by
Aadil Malik — Software Engineer
1 min read  ·  78 words

What is a Tax Estimator?

A tax estimator calculates your expected federal tax liability, marginal bracket, effective tax rate, and net take-home salary based on standard tax brackets and statutory deductions.

Marginal vs. Effective Tax Rates

  • Marginal Tax Rate: The bracket percentage applied to your highest tier of earnings.
  • Effective Tax Rate: The true blended tax percentage calculated as:

$$\text{Effective Tax Rate} = \left( \frac{\text{Total Federal Taxes Paid}}{\text{Gross Total Income}} \right) \times 100$$

Frequently Asked Questions

Your marginal tax rate is the tax rate paid on your last dollar of income (your top tax bracket). Your effective tax rate is the actual percentage of total income paid in taxes (Total Tax Paid / Total Income).
In a progressive tax system, your income is taxed in chunks or 'brackets'. You only pay higher rates on the portion of income that falls within each respective bracket, not on your entire salary.
The standard deduction is a fixed dollar amount that non-itemizing taxpayers can deduct from their gross income to arrive at their taxable income.
A tax deduction reduces your taxable income (e.g., a $1,000 deduction in the 22% bracket saves $220). A tax credit directly reduces your tax bill dollar-for-dollar (a $1,000 credit saves $1,000).
FICA consists of Social Security tax (6.2% up to wage cap) and Medicare tax (1.45% with no cap), split equally between employees and employers.
Contributing to pre-tax retirement accounts (Traditional 401k/IRA), Health Savings Accounts (HSAs), and Flexible Spending Accounts (FSAs) directly reduces your taxable income.
Capital gains taxes apply to profits from selling assets (stocks, crypto, real estate). Assets held over 1 year qualify for preferential Long-Term Capital Gains rates (0%, 15%, or 20%).
Owing taxes usually means not enough federal tax was withheld from your paychecks throughout the year relative to other income sources, side gigs, or changes in deductions.