This document discusses the key fiscal obligations of U.S. citizens residing in Spain. It notes that Americans living abroad have increased to over 7.6 million in 2014 and over 8.7 million in 2015. It then summarizes the main forms and reports required, including the Form 1040 tax return, Foreign Bank Account Report (FBAR), Spanish tax return (Modelo 100), and the Spanish asset reporting form (Modelo 720). The document provides brief descriptions of when each form is due and what types of income and accounts must be disclosed.