What kind of company has the lowest tax rate of 50 million profits?

A sole proprietorship enterprise. The profit of 50 million yuan needs to be summarized according to the tax rate, while the sole proprietorship enterprise is operated by individuals, and the control right of the enterprise belongs to individuals and enjoys all the benefits of enterprise operation. The higher the profit, the lower the tax rate. A wholly-owned enterprise refers to an enterprise invested and operated by one person. The investors of a sole proprietorship enterprise shall bear unlimited liability for the debts of the enterprise.