Islamic International Rating Agency ( IIRA ) has assigned ratings of 'A/A1' (Single A / A One) to Dubai Islamic Bank ( DIB ) on the international scale. On the national scale, ratings have been assessed at AA-(ae)/A1+(ae) (Double AMinus / A One Plus). Outlook on the assigned ratings is 'Stable'. Ratings are supported by DIB 's strong franchise and retail market presence, ensuring steady access to cost effective funding. The recent tier-1 capital issue in early 2015 has reinforced capital adequacy ratio to 18.5%. The fiduciary score has been assessed in the range of '76-80', which indicates strong fiduciary standards, wherein rights of various stakeholders are well defined and protected.