Creates and modifies provisions relating to gold and silver

This bill modifies how Missouri calculates individual income tax by adjusting the state's adjusted gross income based on federal tax rules. It requires taxpayers to add back certain federal tax refunds and specific deductions, such as interest on municipal bonds and changes related to net operating losses, while also allowing subtractions for items like interest on U.S. government bonds and specific capital gains. These changes aim to align state tax calculations more closely with federal provisions, affecting both resident and nonresident individuals filing Missouri tax returns. The legislation updates existing statutes to reflect these new inclusion and exclusion criteria for various financial transactions.