Federal & State Income Tax Estimate
Last reviewed: May 2026
The U.S. uses a progressive federal income tax system with seven brackets. Each bracket applies only to income within that range — not to your entire income. This means moving into a higher bracket does not retroactively raise the rate on all your earnings. Understanding this distinction between marginal rate (the rate on your last dollar) and effective rate (your actual overall percentage) is the most important concept in personal tax planning. The standard deduction and credits further reduce what you owe, and strategic use of retirement accounts and deductions can meaningfully lower your tax burden.1
| Tax Rate | Taxable Income Range | Tax Owed on Range |
|---|---|---|
| 10% | $0 – $11,925 | $0 – $1,192.50 |
| 12% | $11,926 – $48,475 | $1,192.50 + 12% of excess |
| 22% | $48,476 – $103,350 | $5,578.50 + 22% of excess |
| 24% | $103,351 – $197,300 | $17,651 + 24% of excess |
| 32% | $197,301 – $250,525 | $40,199 + 32% of excess |
| 35% | $250,526 – $626,350 | $57,231 + 35% of excess |
| 37% | $626,351+ | $188,769.75 + 37% of excess |
| Income Level | Marginal Rate | Effective Rate | Federal Tax Owed |
|---|---|---|---|
| $40,000 | 12% | ~7.4% | ~$2,960 |
| $75,000 | 22% | ~12.2% | ~$9,150 |
| $120,000 | 24% | ~15.8% | ~$18,960 |
| $200,000 | 32% | ~19.5% | ~$39,000 |
| $500,000 | 35% | ~27.6% | ~$138,000 |
*Approximate, assumes single filer taking standard deduction, no credits.
Deductions reduce taxable income; credits reduce your tax bill directly. The standard deduction for 2025 is $15,000 (single) or $30,000 (married filing jointly). Common above-the-line deductions include traditional IRA contributions, student loan interest (up to $2,500), and health savings account (HSA) contributions. Key credits include the Child Tax Credit ($2,000 per qualifying child), Earned Income Tax Credit (up to $7,830 for 3+ children), and education credits like the American Opportunity Credit (up to $2,500). A $1,000 credit saves more than a $1,000 deduction at any bracket — credits are dollar-for-dollar reductions in tax owed.2
The federal income tax system uses progressive marginal brackets, meaning different portions of your income are taxed at different rates. A common misconception is that earning more can push all of your income into a higher bracket — in reality, only the dollars above each threshold are taxed at the higher rate. For a single filer in 2025 earning $100,000, the first $11,925 is taxed at 10%, the next $36,575 at 12%, the next $47,850 at 22%, and the remaining $3,650 at 24%. The effective tax rate — total tax divided by total income — works out to approximately 17.4%, even though the marginal rate is 24%.
| Bracket (Single, 2025) | Rate | Tax on This Bracket | Cumulative Tax |
|---|---|---|---|
| $0 – $11,925 | 10% | $1,193 | $1,193 |
| $11,926 – $48,475 | 12% | $4,386 | $5,579 |
| $48,476 – $103,350 | 22% | $12,073 | $17,652 |
| $103,351 – $197,300 | 24% | $22,548 | $40,200 |
| $197,301 – $250,525 | 32% | $17,032 | $57,232 |
| $250,526 – $626,350 | 35% | $131,539 | $188,771 |
| $626,351+ | 37% | varies | varies |
Your marginal rate is the percentage applied to your next dollar of income — it determines the tax cost of additional earnings, bonuses, or investment income. Your effective rate is the blended average across all brackets — it represents what you actually pay as a percentage of total income. A married couple filing jointly with $200,000 in taxable income has a marginal rate of 24% but an effective rate of roughly 16.5%. Understanding the distinction matters because tax planning decisions should be based on the marginal rate (what you save by deducting one more dollar) while overall tax burden comparisons use the effective rate.
The standard deduction for 2025 is $15,000 for single filers and $30,000 for married couples filing jointly. Itemizing only makes sense if your total deductible expenses — mortgage interest, state and local taxes (capped at $10,000), charitable contributions, and medical expenses exceeding 7.5% of AGI — exceed the standard deduction. Following the 2017 tax reform, roughly 87% of taxpayers take the standard deduction. For a married couple with a $350,000 mortgage at 6.5% ($22,750 in first-year interest), $8,000 in property taxes, and $5,000 in charitable giving, total itemized deductions reach $35,750, making itemizing worthwhile by $5,750 over the standard deduction.
A tax deduction reduces your taxable income, saving you money at your marginal rate. A $1,000 deduction for someone in the 22% bracket saves $220. A tax credit directly reduces the tax you owe dollar-for-dollar. A $1,000 credit saves $1,000 regardless of your bracket — making credits roughly 3–5 times more valuable than deductions of the same size. Key credits include the Child Tax Credit ($2,000 per qualifying child), the Earned Income Tax Credit (up to $7,830 for families with 3+ children), the American Opportunity Credit ($2,500 per student for college), and energy efficiency credits under the Inflation Reduction Act (30% of costs for solar panels, heat pumps, and other qualifying improvements).
Self-employed individuals pay both the employer and employee portions of FICA — a combined 15.3% on net self-employment income (12.4% for Social Security up to the wage base plus 2.9% for Medicare with no cap). On $100,000 in net self-employment income, the SE tax is $14,130 before any income tax. The deductible half of SE tax ($7,065) reduces adjusted gross income, and the qualified business income (QBI) deduction allows an additional 20% deduction for qualifying pass-through income. After these deductions, the effective tax burden for a self-employed individual earning $100,000 is roughly 25–28%, compared to approximately 17–20% for a W-2 employee at the same gross income level.
Long-term capital gains (assets held over one year) are taxed at preferential rates: 0% for taxable income up to $48,350 (single) or $96,700 (married), 15% up to $533,400/$600,050, and 20% above those thresholds. Short-term gains are taxed as ordinary income at your marginal rate. The 0% bracket creates a powerful planning opportunity — retirees or individuals in lower-income years can sell appreciated assets tax-free up to the threshold. A married couple with $80,000 in ordinary taxable income could realize up to $16,700 in long-term capital gains at 0% federal tax.
If you expect to owe $1,000 or more in taxes beyond withholding, the IRS requires quarterly estimated payments by April 15, June 15, September 15, and January 15. The safe harbor rule allows you to avoid penalties by paying either 100% of the prior year's tax liability (110% for AGI above $150,000) or 90% of the current year's liability through combined withholding and estimated payments. Underpayment penalties run approximately 8% annually on the shortfall amount, calculated on a quarterly basis. Setting up automatic quarterly transfers to cover estimated taxes prevents these penalties and avoids the stress of a large April bill.
Nine states — Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming — have no state income tax on earned income (New Hampshire and Washington tax only certain investment income). Among states that do tax income, rates range from flat taxes of 3–5% to progressive systems reaching 10–13% at the highest brackets. California's top rate is 13.3% and applies to income above $1 million. New York City residents face a triple layer of federal, state (up to 10.9%), and city (up to 3.876%) income taxes. For a high earner considering relocation, the state tax differential alone can exceed $20,000–$50,000 per year, making geographic tax planning one of the highest-impact financial decisions available.
Tax planning is most effective when done proactively throughout the year rather than reactively at filing time. Review your withholding after major life events — marriage, home purchase, new child, job change — to avoid large tax bills or excessive refunds. Maximize available deductions and credits by tracking expenses in real time. Contribute to tax-advantaged accounts (401(k), HSA, IRA) before year-end deadlines. Harvest investment losses in taxable accounts to offset capital gains. These strategies work because the tax code rewards planning and penalizes neglect.
→ Maximize retirement contributions first. 401(k), traditional IRA, and HSA contributions reduce taxable income dollar-for-dollar. See our 401(k) Calculator to model the tax impact.
→ Don't fear a higher bracket. Only the income above the bracket threshold is taxed at the new rate. A raise never results in less take-home pay.
→ Check your withholding mid-year. If you owe a lot or get a large refund, adjust your W-4. A big refund means you gave the IRS an interest-free loan.
→ Self-employed? Pay quarterly. Estimated tax payments (Form 1040-ES) are due in April, June, September, and January. Missing deadlines incurs penalties.
See also: Tax Brackets · Paycheck · Roth IRA · 401(k) Calculator