Many countries have introduced patent box regimes in recent years, offering a reduced tax rate to businesses for their IP-related income. Patent boxes are supposed to increase innovative activity, but they are also suspected to aim at attracting inward profit shifting from multinational...

Just as it may be optimal to regulate firms that produce negative externalities, it may be optimal to provide subsidy to firms that produce positive externalities. This paper studies the optimal provision of subsidy to maximize the value of these externalities, and also whether there are policy...