The emergence of digital banks in Indonesia triggered intense competition among digital banks. This competition encouraged digital banks to create marketing strategies that are tailored to customer behavior and preferences. The invite-a-friend strategy, known as referral marketing, involves the participation of customer connections to recommend products and services to new customers through word of mouth. The potential target customers of digital banks are Generation Z. Therefore, digital banks need to develop innovative business strategies to encourage Generation Z usage decisions by utilizing the referral concept in their promotions. This study examined the effect of the invite-a-friend strategy that occurs due to the dimensions of eWOM - the dimensions of concern for others, economic incentives, helping the company, and expressing positive emotions implemented in the referral program contained in XYZ digital banking on usage decisions. The sample included 148 respondents XYZ digital bank customers who use the referral program. The data analysis technique used in this study was PLS-SEM using SmartPLS version 3 as an analysis tool. The results of this study showed that three dimensions have a positive and significant influence on the usage decisions of Generation Z customers, concern for others, economic incentives, helping the company and expressing positive emotions. Helping the company is the most dominant factor influencing Generation Z customer decisions. Keywords: digital bank, e-referral, strategy to invite friends, usage decision