Credit card debt is increasingly common among poor and inexperienced borrowers – thus de facto a financial inclusion product. However, it remains relatively under-studied. We use detailed card level data and a product that accounted for 15% of all first-time formal loans in Mexico and show...

We study the bancarization of marginal borrowers using credit cards and document that this process is difficult: default risk is substantial, returns heterogeneous, and account closings common. We also take advantage of a randomized control trial that varied interest rates and minimum payments...