This is the open source repository for income-tax.org, a comprehensive income tax calculator for the United States.
- Calculates USA federal, state, and city-level income tax
- Accounts for city-specific taxes (like Portland, OR), unlike other online calculators
- Includes a list of US cities with specific income taxes
- Progressive Web App (PWA) - works offline and can be installed on your device
If your city isn't included and you'd like to add it, see the src/data/README.md.