1. Key Taxes & Rates
| Tax Type | Rate Range | Applies To |
| Federal Income Tax | 10%-37% (progressive) | Individual income |
| Corporate Tax | 21% flat rate | Business profits |
| State Income Tax | 0%-13.3% (e.g., California) | Resident/non-resident income |
| Sales Tax | 0%-11.5% (varies by state) | Goods & services |
| Capital Gains Tax | 0%-20% (long-term) + 3.8% NIIT | Asset sale profits |
2. Impact on Individuals
High-Tax vs Zero-Tax States
- Case 1:Â 500kincomepays500kincomepays66,500 state tax in CA vs $0 in TX.
- Case 2: Retirees favor Florida (no income/estate tax).
Strategies:
- Claim tax credits (Child Tax Credit/EITC)
- Defer taxes via retirement accounts (401k/IRA)
- Relocate to low-tax states or establish trusts
3. Impact on Businesses
Multi-State Operations
- Example: NYC businesses face 30.5% total rate (21% federal + 7.25% state + 2.25% local).
- Comparison: Nevada businesses pay only 21% (no state tax).
Optimization:
- Incorporate in Delaware (no sales tax, flexible corporate laws)
- Claim R&D tax credits (20% federal rate)
- Use transfer pricing for cross-border tax efficiency
Global Comparison
| Country | Corporate Tax | Max Individual Tax | VAT/GST |
| United States | 21% | 37% + state tax | 0-11.5% |
| Germany | 30% | 45% | 19% |
| Singapore | 17% | 22% | 7% |
Key Insight: U.S. corporate tax is lower than EU averages, but total individual tax burden ranks higher.
Sources: IRS 2023 Tax Tables, Tax Foundation 2024 Global Tax Report