This guide was developed as part of the Regional Credit Rating Improvement (RCRI) program implemented by ICMA México-Latinoamérica and funded by a grant from the World Bank through the Public-Private Infrastructure Advisory Facility (PPIAF). Using the ICMA CityLinks model, the RCRI program created partnerships between municipal finance experts in the United States and their counterparts in cities, states, and other subnational authorities in Mexico, Costa Rica, and Argentina. Through these partnerships, the Latin American jurisdictions were able to make changes that improved their creditworthiness and hence their ability to borrow for infrastructure projects.