I use a field experiment in rural Kenya to study how temporary incentives to save impact long-run economic outcomes. Study participants who were randomly selected to receive large temporary interest rates on an individual bank account had signifi- cantly more income and assets 2.5 years after the interest rates expired. These changes are much larger than the short-run impacts on experimental bank account use and almost entirely driven by increased rates of entrepreneurship. Temporary interest rates directed to joint bank accounts had no detectable long-run impacts on entrepreneurship or income, but increased investment in household public goods and led to greater spousal consensus over financial matters. The short-run effects of modest unconditional cash payments were similar to those of the interest rates, but the cash payments had no apparent long-run impact on economic outcomes.
March 01, 2016