Advocates and opponents wrangle continuously over whether charter schools receive too little or too much funding. This study of available national data provides a comprehensive and detailed review of charter school finance and uncovers patterns in both income and expenditures. Charter schools managed by education management organizations (EMOs) receive particular attention. This study’s research questions focus on examining and comparing the amounts and sources of revenues and expenditures between charter schools and traditional public schools, and among several categories of charter school.