The United States operates one of the world's most complex and comprehensive tax systems, reflecting its federal structure and diverse economic landscape. As a global economic powerhouse, the U.S. tax system balances federal, state, and local taxation, creating a multifaceted approach to revenue collection and economic policy.

The U.S. tax framework is characterized by its progressive federal income tax system, extensive deduction opportunities, and significant variations in state-level taxation. With an economy spanning technology, manufacturing, services, agriculture, and numerous other sectors, the tax system is designed to support economic growth, provide social services, and generate government revenue.

The country attracts international professionals and businesses with its dynamic economic environment, offering numerous tax planning opportunities and incentives across various industries and regions.

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United States Income Tax

The U.S. employs a progressive federal income tax system with multiple tax brackets. Key characteristics include:

2025 Federal Tax Brackets (Single Filers):

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Social security and Medicare contributions:

• Social Security Tax: 6.2% for employees (up to annual wage base)
• Medicare Tax: 1.45% for employees (no wage base limit)
• Additional Medicare Tax: 0.9% for high-income earners
• Self-employed individuals pay both employee and employer portions

If you want to have a better understanding of the taxes you should pay on personal income in the United States, you can use the personal tax calculator in the Taxation section of the United States page.‍

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U.S. Tax on Overseas Income‍

The United States has a unique worldwide taxation system:

1. Citizens and Permanent Residents: Taxed on worldwide income globally
2. Non-Residents: Taxed only on U.S.-sourced income

Key taxation principles:

• Citizenship-based taxation for U.S. citizens and green card holders
• Foreign Earned Income Exclusion allows exclusion of up to $120,000 of foreign earnings
• Foreign Tax Credit helps prevent double taxation
• Mandatory reporting of foreign financial accounts (FBAR)

Residency is determined by:

• Citizenship
• Permanent resident status (Green Card)
• Substantial presence test (183 days calculation)

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U.S. Tax on Investments

‍Investment income receives specific tax treatment:

• Dividends:
  • Qualified dividends: 0%, 15%, or 20% depending on income
  • Non-qualified dividends: Taxed as ordinary income
• Capital Gains:
  • Long-term (held over 1 year): 0%, 15%, or 20%
  • Short-term: Taxed at ordinary income rates
• Interest Income: Taxed at ordinary income rates
• Rental Income: Taxed at progressive rates with various deductions
• Cryptocurrency: Treated as property, capital gains rules apply

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U.S. Corporate Taxation‍

Corporate taxation features:

• Federal Corporate Tax Rate: 21%
• State Corporate Taxes: Vary by state (0-12%)
• Pass-Through Entities: Special tax treatment for S-corporations, partnerships
• Value Added Tax (VAT): Not used at federal level; some states have sales taxes
• Payroll Taxes: Significant employer and employee contributions

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Special Tax Regimes

‍The U.S. offers numerous specialized tax arrangements:

1. Research and Development Tax Credit: Significant incentives for innovation
2. Opportunity Zone Investments: Tax benefits for investing in designated areas
3. Renewable Energy Tax Credits: Incentives for green energy investments
4. Small Business Tax Provisions: Various credits and deductions
5. State-Level Economic Incentives: Unique tax breaks by state

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Regional Comparison

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Tax Planning for the United States‍

Effective tax management requires a strategic approach:

1. Residency Status Management: Understanding complex residency rules
2. Investment Strategy: Utilizing tax-advantaged accounts
3. Comprehensive Documentation: Maintaining detailed financial records
4. Professional Consultation: Engaging with tax experts due to system complexity

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