The safest banks globally are typically determined by long-term credit ratings issued by major agencies like Moody's, S&P, and Fitch, combined with robust capital reserves and sovereign backing. Financial institutions consistently ranked at the top for safety include major European and North American entities such as Germany's KfW, Switzerland's Zürcher Kantonalbank, and various top-tier Singaporean and Nordic banks that maintain exceptionally strong balance sheets and conservative risk profiles.