MSIG Insurance is a subsidiary of MSI and a member of the MS&AD Insurance Group, and has a presence in Singapore for over 100 years. Their financial capacity is buttressed by their parent company, Mitsui Sumitomo Insurance Company (MSI).

MSIG Singapore is also a member of the MS&AD Group, one of the world's largest general insurance groups with operations in more than 40 countries, 18 in Asia and Oceania. This enables them to leverage on extensive group wide expertise and synergies, including that of MS Amlin, the second-largest Lloyd's syndicate, which the Group acquired in 2015 to underwrite special risks, and that of First Capital Insurance Limited of Singapore, which was successfully acquired in late 2017.