The bank, with assets worth US$ 31.9 billion in 2018, has the largest network in Oman exceeding 150 branches.

[5] The international operations consist of a branch each in Riyadh, Saudi Arabia and Kuwait and representative offices in Dubai, UAE and Singapore.

[11] In 2013, the bank was hit by a $39 million fraud scheme using prepaid travel cards accessed from outside of Oman.

[12] This led to an impairment charge impacting 10.5% of Bank Muscat's earnings for the period.

[13] In 2016, the United States Department of the Treasury secretly issued a license to Bank Muscat to convert $5.7 billion in Iranian overseas reserves from Omani rials into euros via United States dollars, something not normally permitted due to United States sanctions against Iran.