Sheikh Moosa also established a money transfer service between the 40s and 60s of the 20th century through his well established & recognized P.O. Box 4 Muscat, which functionally operated as first money transferring & wiring service hub for many Omanis who were living & working in East Africa, Gulf States, and India. This complimentary service was introduced to aid Omanis, who were living abroad back then, to send and receive money, as it proved difficult due to the lack of professional & commercial banking services at that time. It’s worth mentioning, this free of charge financial service was provided well before Western Union was established in the region.
Furthermore, he was a founding member & one of the directors of The British Bank of The Middle East, which was established in 1948. The bank is one of the oldest banks not only in Oman but also in the entire region. Later on in the mid-1970s, he was involved in establishing Bank of Oman, Bahrain and Kuwait, which was a joined venture with Bank of Bahrain & Kuwait (BBK).