According to this article, one of the key disadvantages is excessive power consumption and offset in CMOS based comparators. At scale down technology, CMOS suffers with short channel effect and leakage current. To address these challenges, FinFET technology is used in three-stage dynamic comparators instead of traditional circuit designs. The energy efficiency of FinFET-based dynamic comparators is higher than that of CMOS, and the short channel effect and leakage current are decreased. Furthermore, a new design of FinFET-based three stage dynamic comparators with tail transistors was created and simulated using the cadence virtuoso environment. In comparison to three-stage dynamic comparators without tail transistors, the three-stage dynamic comparator with tail transistor in this approach decreases offset, power consumption, and energy consumption.