Establishes credits against income tax for a teacher's unreimbursed expenditures for qualified supplies

This bill creates a $500 annual tax credit for K-12 teachers in New York who pay out-of-pocket for approved classroom supplies. It covers expenses like books, writing tools, paper, instructional materials, and field trips, but excludes religious materials, sports programs, and most extracurricular activities (except music/drama). The credit reduces income tax liability, with any excess paid as a refund if it exceeds the tax owed. The credit applies to taxable years starting January 1, 2027, and is limited to qualified public or private schools. It directly benefits teachers who bear these costs without employer reimbursement.