This study is devoted to the analysis of Germanisms in the modern economic terminology of the English language, with a focus on the historical periods of their borrowing. The aim of the work is to describe the key stages of replenishing the English lexicon with Germanisms during the third period (18th–19th centuries, Industrial Revolution and scientific progress) and the fourth period (20th–21st centuries, globalization, economy, technology, and culture), to conduct a thematic classification of borrowings, and to examine written monuments that record these processes. To achieve this goal, methods such as corpus analysis of terms, structural analysis, case-study (detailed examination of a large number of terms), and percentage and quantitative counting were employed. The study analyzes the lexical corpus of Germanisms in economic terminology based on their quantitative representation in the specified periods. The total number of Germanisms amounts to 88 terms, with 30 attributed to the third period and 16 to the fourth. The percentage ratio of specialized lexicon reaches 78% of the total volume of borrowings from German, which underscores the profile specialization of German as a donor language in the professional sphere, rather than in general scientific or everyday usage. A classification of donor languages based on their quantitative contribution to specialized lexicon is proposed, where Germanisms hold a significant place in the economic terminology of English. The analysis of etymological chains revealed the presence of English and German languages as primary components in both periods. Such a comprehensive approach to Germanisms, including the standardization of terminology, is conducted for the first time, which determines the scientific novelty of the research. The obtained results confirm the functional orientation of the German language toward economics and highlight its role in the globalization of English terminology. The findings can be utilized for further linguistic and economic studies.