Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Economics, 2006."June 2006."Includes bibliographical references.This thesis is a collection of three empirical essays on firms, banks, and access to finance. Chapter 1 provides evidence that credit subsidies for exports are substantially misallocated towards financially unconstrained firms. Using loan level data for firms and exploiting an exogenous change in loan eligibility, I show that publicly listed firms are financially unconstrained, and are also allocated nearly 44% of all subsidized loans. The opportunity cost of these misallocated funds is significant as even the more productive privately held firms are shown to be financially constrained. Chapter 2 studies the role ...