This study aims to test whether there is a difference in charitable giving between practicing converts and practicing lifelong Latter-day Saints (Mormons, LDS). A cluster sample of 2,701 anonymous questionnaires was completed during worship services in California, Utah, Michigan, Pennsylvania, and New Jersey from June 2010 through November 2011. We found that practicing Mormons in our sample donated at high rates to both religious and social causes. Compared with converts, lifelong members were more likely to donate 10% or more of their income to religious causes and to donate to social causes. Also, the number of years since conversion was significantly and positively related to the likelihood of fully tithing and making donations to social causes. Implications and future research are discussed.