T The purpose of this study is to analyze and describe the things that affect Muzaki Minang's interest of muzaki to pay zakat, , including Zakat Knowledge, Religion, Culture, Subjective Norms and Income. Specifically, this study wants to test whether there is an influence between knowledge of zakat, religious, cultural, subjective norms and income on interest of muzaki Minang to pay zakat , with age as a moderating variable. The population in this study is Muzaki Minang who is domiciled in West Sumatra and outside West Sumatra (diaspora). The sample in this study was Muzaki Minang who met the requirements as compulsory zakat, namely, Muslims, baligh and intelligent, full ownership of property, reaches nisab and reaches haul. The sampling technique used is purposive sampling, with a sample size of 320 responden. Data collection techniques through questionnaires. The data analysis technique used is descriptive statistical analysis with the help of SPSS and Structural Equation Model (SEM) from the AMOS Software package.The results of this study indicate that the variable knowledge of zakat, culture and Income have no effect on interest of Muzaki to pay zakat. Religion and subjective norms have a positive and significant effect on interest of Muzaki to pay zakat. Age factor is able to moderate the relationship between zakat knowledge and interest of muzaki to pay zakat. The age factor is able to moderate the relationship between religiosity and interest of muzaki to pay zakat. The age factor is able to moderate the cultural relationship to the interest of muzaki to pay zakat. The age factor is able to moderate the relationship between Subjective Norms and interest to pay zakat. The age factor is able to moderate the relationship between income and interest of muzaki to pay zakat. The early adult age factor (20-40 years) is more dominant than the elderly age (> 40 years). The findings of this study provide useful input for indigenous community leaders in particular and the West Sumatra Regional Government in general, to think about how to strengthen the understanding of Minang Kabau customs for the younger generation, both those living in West Sumatra and for the Diaspora at home and abroad. With the increasing understanding of customs for the Minang community, the interest in paying zakat will increase, so that the relationship between culture and interest in paying zakat is positive and significant, automatically the relationship between knowledge of zakat and income toward interest in paying zakat will be positive and significant, so that zakat can be used as a tool to improve welfare public.