Lexical bundles perform a wide range of functions, and present disciplinary variation in written academic prose. However, little is known about the characteristics of lexical bundles used in interdisciplinary domains. Therefore, this study investigates the use of lexical bundles in the field of FinTech, an amalgam of finance and technology, by building a 127 472-word corpus of 114 published research articles related to FinTech. A total of 180 four-word lexical bundles are identified and thereafter analysed in accordance with the taxonomy of structures and functions devised by Biber et al. (1999). The results reveal that (1) the proportion of bundle ending with nouns is twice that of bundles ending with verbs, (2) these identified lexical bundles are dominated by VP-based expressions, and (3) referential bundles account for almost 50% of the 180 instances. The existence of disciplinary variation is once again confirmed in this study, and the discipline specific multi-word combinations may deserve attention in the instruction of EAP writing as they can help students to be more articulate in their academic discourse communities.