This bill allows New Jersey taxpayers to deduct from their gross income the costs associated with functional improvements and repair and maintenance of their primary residence. Taxpayers can claim deductions for expenses that materially improve the operating condition and extend the useful life of their homes, as well as for expenses that keep the residence in efficient operating condition. The definition of "primary residence" includes various types of homes, such as mobile homes and cooperative units, but excludes vacation homes or secondary properties. Notably, the bill specifies that improvements for new uses or aesthetic purposes do not qualify for the deduction.

Additionally, the bill stipulates that married individuals filing separately can each claim half of the deduction for shared expenses related to their primary residence. There is no cap on the amount of expenses that can be claimed in a taxable year, which encourages homeowners and renters to invest in their properties. By providing this tax deduction, the bill aims to alleviate the financial burden of home maintenance for New Jersey residents, promote community welfare, and encourage more individuals to live in the state.