This paper studies the effect of deposit insurance on depositor behavior. Our theoretical framework integrates insights from public and financial economics and predicts that (1) deposit insurance induces bunching at the threshold in the deposit distribution and (2) an increase in the insurance threshold promotes deposit growth, particularly higher for individuals bunching at the initial limit. We exploit a large and unexpected increase in the Colombian insurance together with monthly depositor-level records from a major bank to test these predictions. We validate the existence of bunching in deposits and quantify the heterogeneous effect of deposit insurance on individual deposit growth.

We conduct a randomized experiment involving 7,063 late-paying clients of a large Colombian bank to compare the effects of text messages that leverage different behavioral motives on loan delinquency. Our results show that receiving a message decreases the likelihood of borrowers being late by 4 percent. The effects are more pronounced and persistent when messages leverage social norms. Using machine learning tools, we find that the effects are higher among borrowers with higher credit scores and unsecured loans. A second experiment shows that this type of message is ineffective in preventing on-time borrowers from falling into loan delinquency.