Income tax; exclude NIL compensation from gross income.

HB 4099 amends Mississippi's state income tax law (Section 27-7-15) to exclude Name, Image, and Likeness (NIL) compensation from taxable "gross income." This directly affects Mississippi student-athletes who earn NIL deals through endorsements, social media, or other commercial opportunities. The bill revises the definition of gross income to specifically exclude NIL compensation, meaning this income will no longer be subject to state income tax. The change applies to income earned by student-athletes under NIL agreements, aligning Mississippi tax treatment with the growing trend of NIL compensation in collegiate athletics.