We consider a model featuring a single-product natural monopoly, which faces evaders, i.e., individuals that may not pay the price. By exerting a costly effort, the firm can deter evasion. To maximize the total surplus, a regulator sets the price, the level of deterrence effort, and socially...

Due to an unprecedented rise in demand, in 2020 the Peruvian Ministry of Education implemented a centralized assignment mechanism that allowed thousands of students at various levels of education to move from the private to the public sector. In this paper, we empirically explore the...

We consider the regulation of a monopoly facing consumers that may evade payments, an important issue in public utilities. To maximize total surplus, the regulator sets the price and socially costly transfers, ensuring that the monopoly breaks-even. With costly effort, the firm can deter...