Modifies eligibility for alternative business calculation adjustment allowed under gross income tax.

This bill modifies New Jersey's gross income tax by restricting the alternative business calculation adjustment for taxpayers with higher incomes. It allows business owners to net losses from specific income categories, such as rents or royalties, against gains to determine their taxable business income. Under the new rules, effective for tax years starting in 2026, taxpayers earning $500,000 or less can still deduct 50% of their business profit increase, while those earning between $500,000 and $1 million can only deduct 25%. The bill completely eliminates this tax deduction for individuals with gross income exceeding $1 million.