Over the last decade, the expansion of microfinance institutions (MFIs) has dramatically shifted the availability of credit across the developing world. This recent development provides an opportunity to examine the relationship between household labor migration and access to and use of formal credit. Both theories of migration and the expectations of formal credit providers have suggested that labor migration and credit are substitute solutions to the demand for capital in the developing world, with the implication that greater access to formal financial services may stem migration out of rural places. Using household survey data from Cambodia, an MFI-saturated country, we find that households using formal credit and households with greater access to formal credit are more likely to have labor migrants than households without access. This association persists across size of loan, purpose of loan, remittances behavior, and for domestic migrations. These findings complicate our understanding of the relationship between credit and migration, and call for a greater recognition of the importance of context in framing migration behavior. (Massey et al. 1998;Stark 1982;Taylor et al. 1996). As economic development disrupts subsistence or small-scale household production, households require capital to facilitate their transition to market-based production and consumption, and insurance to mediate risk while doing so. However, financial services are often lacking or inaccessible in developing economies. NELM theory views labor migration as a solution to this developmental dilemma, as migrant wages can be remitted or returned for investment and consumption at home, as well as used for risk management. More specifically, NELM theory proposes that migration and credit function as substitute solutions to a basic and crucial need for capital, and that migration serves as a substitute to insurance by providing a means of diversifying risk, in developing economies. By extension, both scholars and policy-makers have suggested that the development and expansion of credit and insurance markets in migrant-sending areas may stem out-migration (e.g., De Brauw and Rozelle 2008;Massey et al. 2002;Rozelle et al. 1999;Taylor et al. 1996;Zohir and Matin 2004). Reviews of research on the causes of migration characterize absent or limited financial markets as ''fundamental causes'' of migration (Taylor et al. 1996, p. 405), but studies exploring the relationship between access to credit or insurance markets and migration are mostly lacking. Studies of the relationship between credit and migration are complicated by the very nature of the dilemma: because poor, rural households do not have access to credit and insurance, there is limited empirical basis on which to consider the suggestion that migration is a response to their absence. Research in support of NELM, therefore, has tended to focus on patterns of remittance use, return migration, and business development (Durand et al. 1996;Garip 2012;Lindstrom and Lauster 2001;Taylor 1...