Free Income Tax Calculator

This income tax calculator helps you estimate your federal income tax liability, FICA taxes, and take-home pay for the 2024 tax year. Whether you are planning your finances, evaluating a job offer, or preparing for tax season, follow these steps to get an accurate estimate of your tax burden.

1. Enter your annual gross income. This is your total income from all sources before any deductions or taxes — including wages, salaries, tips, bonuses, commissions, and any other earned income. If you are paid hourly, multiply your hourly rate by the number of hours you work per year (typically 2,080 for a standard 40-hour week).
2. Select your filing status. Choose the status that matches your situation as of December 31 of the tax year. Your filing status determines which tax brackets and standard deduction amounts apply to you. Married Filing Jointly generally offers the most favorable rates for couples.
3. Choose your deduction type. The standard deduction is a fixed amount that reduces your taxable income. If your qualifying itemized deductions exceed the standard deduction, switch to Itemized and enter your total. Common itemized deductions include mortgage interest, state and local taxes, and charitable contributions.
4. Enter pre-tax deductions. Include the annual total of all pre-tax contributions such as traditional 401(k), 403(b), HSA, and FSA contributions. These reduce your adjusted gross income and therefore your federal income tax, though they do not reduce FICA taxes.
5. Add dependents. Enter the number of qualifying dependents you plan to claim. While this calculator provides a simplified estimate, dependents can significantly reduce your tax bill through credits such as the Child Tax Credit.
6. Review your results. Examine your federal tax, FICA breakdown, effective rate, marginal rate, and after-tax income. Use the bracket chart to visualize how your income flows through each tax bracket, and the pie chart to see the overall split between taxes and take-home pay.

The United States uses a progressive income tax system, which means your income is taxed at increasing rates as it rises through defined brackets. A common misconception is that moving into a higher tax bracket means all of your income is taxed at that higher rate. In reality, only the income within each bracket is taxed at that bracket's rate. This is the key difference between your marginal tax rate and your effective tax rate.

Marginal vs. Effective Tax Rate

Your marginal tax rate is the rate applied to your last (highest) dollar of taxable income. It tells you how much tax you would pay on the next dollar you earn. Your effective tax rate is the average rate at which your total income is taxed — calculated by dividing your total tax by your gross income. The effective rate is always lower than the marginal rate because a significant portion of your income is taxed at lower rates in the lower brackets.

Worked Example: $85,000 Single Filer

Consider a single filer earning $85,000 in 2024 with no pre-tax deductions. After the standard deduction of $14,600, their taxable income is $70,400. Here is how it flows through the brackets:

• 10% bracket ($0 - $11,600): $11,600 taxed at 10% = $1,160
• 12% bracket ($11,601 - $47,150): $35,550 taxed at 12% = $4,266
• 22% bracket ($47,151 - $70,400): $23,250 taxed at 22% = $5,115

Total federal tax: $10,541. The marginal rate is 22% (the highest bracket reached), but the effective federal tax rate is only 12.4% ($10,541 / $85,000). Add FICA taxes of $6,502.50 (Social Security at 6.2% of $85,000 = $5,270, plus Medicare at 1.45% of $85,000 = $1,232.50), and the total tax burden is $17,043.50 — an overall effective rate of about 20.1%. The after-tax income would be approximately $67,957, or about $5,663 per month.

Why Progressive Taxation Matters

Progressive taxation is designed so that taxpayers with higher incomes contribute a larger share of their income to fund government services. The structure also provides a built-in incentive to earn more: even if you cross into a new bracket, only the income above that threshold is taxed at the higher rate. You will never take home less money by earning more. This is a fundamental principle that is frequently misunderstood. A raise that pushes you from the 22% bracket into the 24% bracket does not mean your entire income is suddenly taxed at 24% — only the income above the bracket threshold is taxed at the higher rate.

Deductions reduce the amount of income that is subject to federal tax. You can choose between the standard deduction (a flat amount based on your filing status) or itemized deductions (the sum of qualifying expenses). You should choose whichever is larger, as it results in lower taxable income and therefore lower tax.

When to Itemize

Itemizing makes sense when your total qualifying deductions exceed the standard deduction for your filing status. In 2024, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. You are most likely to benefit from itemizing if you have a mortgage with significant interest payments, live in a high-tax state, or make large charitable contributions. After the 2017 Tax Cuts and Jobs Act nearly doubled the standard deduction, the percentage of taxpayers who itemize dropped from about 30% to roughly 10%.

Common Itemized Deductions

The most significant itemized deductions include mortgage interest on loans up to $750,000 for homes purchased after December 15, 2017. State and local taxes (SALT) — including property taxes and either state income tax or sales tax — are deductible but capped at $10,000 per return. Charitable contributions to qualified organizations are deductible, generally up to 60% of your AGI for cash donations. Medical and dental expenses that exceed 7.5% of your AGI can also be deducted. For example, if your AGI is $80,000 and your medical expenses total $8,000, you can deduct $2,000 (the amount exceeding $6,000, which is 7.5% of your AGI).

FICA taxes are separate from income tax and fund Social Security and Medicare. Unlike income tax, FICA is calculated on your gross wages before any deductions such as 401(k) contributions or the standard deduction. Understanding FICA is essential because it represents a significant portion of the total tax burden for most workers.

Social Security Tax

Employees pay 6.2% of their wages toward Social Security, and employers pay a matching 6.2%. However, this tax only applies to income up to the wage base limit, which is $168,600 for 2024. Any income above this threshold is exempt from Social Security tax. This means the maximum Social Security tax an employee pays in 2024 is $10,453.20 (6.2% of $168,600). For high earners, Social Security tax is effectively regressive because the rate drops to 0% on income above the wage base.

Medicare Tax

Medicare tax is 1.45% on all earned income with no cap — unlike Social Security, there is no wage base limit. Employers also pay a matching 1.45%. Additionally, the Affordable Care Act introduced an Additional Medicare Tax of 0.9% on earned income exceeding $200,000 for single filers or $250,000 for married filing jointly. This additional tax is paid only by the employee; the employer does not match it. So a single filer earning $300,000 pays 1.45% on all $300,000 plus an additional 0.9% on the $100,000 above the threshold.

Self-Employment Tax

Self-employed individuals pay both the employee and employer portions of FICA, resulting in a combined rate of 15.3% (12.4% for Social Security plus 2.9% for Medicare). However, self-employed workers can deduct the employer-equivalent portion (7.65%) as an adjustment to income on their tax return, which slightly reduces the effective burden. This is one reason why the tax impact of switching from W-2 employment to self-employment can be significant. If you are earning $100,000, the additional 7.65% self-employment tax amounts to $7,650 more in taxes compared to being a W-2 employee.

While you cannot avoid taxes entirely, there are several legal strategies to reduce your tax burden and keep more of your income. The key is to take advantage of every deduction, credit, and tax-advantaged account available to you.

Maximize Pre-Tax Retirement Contributions

Contributing to a traditional 401(k) or 403(b) directly reduces your taxable income. In 2024, you can contribute up to $23,000 ($30,500 if you are 50 or older). If you are in the 22% marginal bracket, maxing out at $23,000 saves you $5,060 in federal income tax. Additionally, if your employer offers a match, that is free money — a 50% match on the first 6% of your salary is effectively an immediate 50% return on that portion of your contribution. Always contribute at least enough to capture the full employer match before considering other investment options.

Use Health Savings Accounts (HSAs)

If you have a high-deductible health plan, an HSA offers the only triple tax advantage in the tax code: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. In 2024, you can contribute up to $4,150 as an individual or $8,300 for a family. Many financial planners recommend using your HSA as a long-term investment vehicle — pay current medical expenses out of pocket if you can, let the HSA grow and invest over time, and save the receipts to withdraw tax-free in retirement. After age 65, you can withdraw for any purpose (paying only income tax, like a traditional IRA).

Tax-Loss Harvesting

If you have investments in a taxable brokerage account, you can sell positions that have declined in value to realize a capital loss. These losses can offset capital gains dollar for dollar, and up to $3,000 of excess losses can be deducted against ordinary income each year. Any remaining losses carry forward to future years. For example, if you have $5,000 in capital gains and $8,000 in capital losses in a given year, the $5,000 in gains are fully offset, and you can deduct an additional $3,000 against your ordinary income, leaving $0 in remaining losses to carry forward. Be aware of the wash-sale rule: you cannot repurchase a substantially identical security within 30 days before or after the sale.

Timing Income and Deductions

If you have control over when you receive income — for example, as a freelancer, business owner, or through year-end bonuses — you may benefit from shifting income between tax years. If you expect to be in a lower bracket next year (perhaps due to a career change, sabbatical, or retirement), deferring income to next year could reduce your tax. Conversely, if you expect to be in a higher bracket next year, accelerating income into the current year may save taxes. The same logic applies to deductions: bunching charitable contributions into a single year can push your itemized deductions above the standard deduction threshold, maximizing the tax benefit. In alternate years, you take the standard deduction. This strategy of alternating between itemizing and standard deduction can yield meaningful savings over time.