Relating to Updating Personal Income Tax definitions

HB 4024 updates West Virginia's Personal Income Tax Act to align with federal tax law changes. It revises definitions like "federal adjusted gross income" to reflect federal tax code updates made before January 1, 2026, ensuring West Virginia tax rules follow federal changes within that timeframe. The bill affects all West Virginia taxpayers by modifying how income tax calculations and credits (like the homestead property tax credit) are determined based on federal definitions. Key provisions include retroactive application for prior tax years (while preserving prior law) and specifying that federal changes after 2025 will not be adopted by West Virginia.