Allows residents of certain Highlands municipalities to designate on gross income tax returns that a portion of gross income tax paid be returned to municipality of residence.

This bill creates the "NJ Highlands Tax Fairness Fund" to allow residents in eight specific municipalities (Bloomsbury, Byram, Califon, Glen Gardner, Kinnelon, Lebanon, Ringwood, and West Milford) to redirect 10% of their New Jersey gross income tax - after credits for taxes paid to other jurisdictions - to their local government. Funds collected through this designation must be used exclusively to reduce property tax levies for residents in those municipalities. The program ensures these funds are distributed proportionally based on contributions and count as additional state aid, separate from other funding streams. It applies only to municipalities where 95% or more of land lies within the Highlands preservation area.