Reports say the Finance Ministry has proposed cutting the TISA tax-deduction cap to 600,000 baht a year, down from 800,000, and dropping the income-based multiplier (1.3x for incomes up to 1.5 million, 0.7x above). The deputy finance minister says the scheme is still under consideration and must go to the cabinet, with a target of September 2026. TISA would also allow direct investment in stocks and debt instruments to get the tax deduction. Owners and staff planning retirement or tax savings should wait for the final cabinet decision before changing plans.