- Gross income includes all income from any source unless specifically excluded by law. It includes cash as well as non-cash items valued at fair market value.
- Some common exclusions from gross income include life insurance proceeds, gifts, inheritances, employer-provided health insurance, and municipal bond interest.
- The tax treatment of other income sources like interest, dividends, alimony, annuities, and scholarships depends on certain rules and calculations explained in the document.