The Stock Buyback Accountability Act of 2026 aims to change how corporations are taxed when they buy back their own stock. The main goal is to increase the tax rate on these stock repurchases to discourage the practice and encourage companies to invest more in their employees and business operations. One of the key changes in this legislation is the increase of the excise tax on stock buybacks from 1 percent to 4 percent. This means that when a corporation repurchases its own shares, it will now pay a higher tax on that transaction.