Quick Navigation
Federal Income Tax
The federal income tax is a progressive tax system where tax rates increase with income levels. Understanding how federal taxes work is essential for effective tax planning.
2025 Tax Brackets
The US uses a marginal tax rate system with seven tax brackets for 2025:
| Tax Rate | Single Filers | Married Filing Jointly | Head of Household |
|---|---|---|---|
| 10% | $0 - $11,000 | $0 - $22,000 | $0 - $15,700 |
| 12% | $11,001 - $44,725 | $22,001 - $89,450 | $15,701 - $59,850 |
| 22% | $44,726 - $95,375 | $89,451 - $190,750 | $59,851 - $95,350 |
| 24% | $95,376 - $182,050 | $190,751 - $364,200 | $95,351 - $182,050 |
State Income Taxes
State income tax varies significantly across the United States. Some states have no income tax, while others have rates that can exceed 13%.
No Income Tax States
Nine states don't impose state income tax on individuals:
- Alaska
- Florida
- Nevada
- New Hampshire
- South Dakota
- Tennessee
- Texas
- Washington
- Wyoming
Highest Tax Rate States
States with the highest income tax rates for 2025:
- California: Up to 13.3%
- Hawaii: Up to 11%
- New York: Up to 10.9%
- New Jersey: Up to 10.75%
- Oregon: Up to 9.9%
Deductions & Tax Credits
Tax deductions reduce your taxable income, while tax credits directly reduce your tax liability dollar-for-dollar.
Standard Deduction vs. Itemized Deductions
For 2025, the standard deduction amounts are:
- Single filers: $14,600
- Married filing jointly: $29,200
- Head of household: $21,900
Pro Tip: You should itemize deductions only if your total itemized deductions exceed the standard deduction amount for your filing status.
Common Tax Credits
Child Tax Credit
Up to $2,000 per qualifying child under 17. Partially refundable up to $1,600.
Calculate Child Tax CreditEarned Income Tax Credit
Refundable credit for low to moderate-income working individuals and families.
Calculate EITCBusiness Taxes
Business tax obligations vary significantly based on your business structure and income level.
Self-Employment Tax
If you're self-employed, you must pay self-employment tax (Social Security and Medicare taxes) on your net earnings:
- Social Security: 12.4% on earnings up to $168,600 (2025)
- Medicare: 2.9% on all earnings
- Additional Medicare: 0.9% on earnings over $200,000 (single) or $250,000 (married filing jointly)
Business Entity Types
Sole Proprietorship
Simplest business structure. Business income is reported on your personal tax return (Schedule C).
LLC (Limited Liability Company)
Provides liability protection with flexible tax treatment. Can elect different tax classifications.
S Corporation
Pass-through entity that can provide self-employment tax savings for active owners.
C Corporation
Separate tax entity with corporate tax rates. Subject to double taxation on distributed profits.
Investment Taxes
Investment income is subject to different tax rules depending on the type of investment and how long you hold it.
Capital Gains Tax
Capital gains are profits from selling investments and are taxed differently based on holding period:
Short-Term Capital Gains
Assets held for one year or less are taxed as ordinary income at your regular tax rate.
Calculate Capital GainsLong-Term Capital Gains
Assets held for more than one year qualify for preferential tax rates:
- 0% for low-income taxpayers
- 15% for most taxpayers
- 20% for high-income taxpayers
Dividend Taxes
Qualified dividends are taxed at capital gains rates, while non-qualified dividends are taxed as ordinary income.
Calculate Dividend TaxTax Planning Strategies
Effective tax planning can significantly reduce your tax burden through strategic timing and structuring of income and deductions.
Retirement Planning
Traditional vs. Roth IRA
Traditional IRAs provide immediate tax deductions, while Roth IRAs offer tax-free withdrawals in retirement.
Compare IRA Types401(k) Contributions
Maximize employer matching and consider the tax benefits of traditional vs. Roth 401(k) contributions.
401(k) Tax PlanningYear-End Tax Strategies
- Tax Loss Harvesting: Sell losing investments to offset capital gains
- Bunching Deductions: Accelerate or defer deductible expenses
- Retirement Contributions: Maximize contributions before year-end
- Charitable Giving: Consider donor-advised funds or appreciated securities
- Income Timing: Defer bonuses or accelerate income based on tax situation
Important: This guide provides general information for educational purposes. Tax laws are complex and change frequently. Always consult with a qualified tax professional for advice specific to your situation.
Additional Tax Resources
Tax Calculators
Access our comprehensive collection of tax calculators for all your planning needs.
Browse All Calculators