Many governments have spent much of the past decade trying to extend a helping hand to informal businesses by making it easier and cheaper for them to formalize. Much less effort has been devoted to raising the costs of remaining informal, through increasing enforcement of existing regulations....

This paper provides evidence that commercial lenders in Peru free ride off their peers' screening efforts. Leveraging a discontinuity in the loan approval process of a large bank, the study finds that competing lenders responded to additional loan approvals by issuing approvals of their own....