This article examines the dynamics between mortgage broker competition, origination fees and price transparency. A reverse first-price sealed-bid auction model is used to motivate broker pricing behavior. Confirming the model predictions, our empirical analysis shows that increased mortgage brokerage competition at the Metropolitan Statistical Area level leads to lower fees. The findings are robust to different measures of fees as well as different measures of competition. We also provide evidence that broker competition reduces mortgage origination fees on retail (nonbrokered) loans as well. In addition, our results indicate that pricing complexity is an important determinant of fees, and increased broker competition is associated with a higher probability of a loan being priced with transparency. Our results suggest that mortgage brokers increase competition and lower fees in the mortgage market.During the significant boom in house prices in the previous decade, residential loans outstanding in the United States increased from about $5 trillion in 2000 to just over $11 trillion in 2007. Over this same period, mortgage brokers-intermediaries that bring borrowers and lenders togetheraccounted for approximately 50% of residential mortgage originations, generating estimated revenues of $20 billion in 2006 alone. 1 Given the large role that brokers played in originations, it is not surprising that as house prices tumbled after 2007, mortgage brokers were blamed for many of the alleged excesses that took place during the boom. 2 While the mortgage