PurposeThis study aims to develop and test a research model that explores the empirical relationship between consumer religiosity, brand love and consumer forgiveness. Its objective was to enhance our understanding of the mechanisms that can influence consumers to extend forgiveness to brands in the context of Islamic banking in Tanzania.Design/methodology/approachThe study used a quantitative cross-sectional survey design to gather data from 399 respondents in the Dodoma and Dar-es-salaam regions of Tanzania. A structured questionnaire was used to collect the data, which were subsequently analyzed using structural equation modeling (SEM) with AMOS 21.FindingsThe study’s findings revealed that consumer forgiveness is influenced by the level of brand love at an individual level. Additionally, the findings indicate that in the context of Islamic banking, brand love is an emotional behavior that is influenced by the strength of religious beliefs, that is, consumer religiosity. Consequently, the findings highlighted the mediating role of brand love in the proposed relationship between consumer religiosity and consumer forgiveness.Practical implicationsThe fact that Islamic banking is guided by Islamic laws (Sharia) and Islamic values means that competitiveness in this sector can be established by serving consumers who are well-versed in Islamic teachings and doctrines. Furthermore, customers who possess a strong understanding of Islamic teachings and doctrines can be an asset to Islamic banks, as they are less likely to switch banks due to service delivery issues.Originality/valueThis empirical study is one of the few attempts to explore the relationship between consumer religiosity, consumer forgiveness and brand love. It expands our understanding of consumer forgiveness by examining the influence of deontological norms (applying norms to assess Islamic banking practices) and teleological evaluation (evaluating Islamic banking practices based on the overall balance of right and wrong expected to occur).