"Also, Fitch expects the entity to mitigate the regional specific risks faced by the individual RDBs, while consolidating and centralising administrative functions.
"Although challenges exist, such as the rationalisation of products and service, the agency believes that the merger would help make the combined entity a more sustainable and competitive enterprise."
Fitch Ratings Lanka said the Sabaragamuwa Development Bank (SDB) rating was upgraded to 'BBB+(lka)' from 'BBB(lka)' with the Outlook revised to Stable from Positive.
The Uva Development Bank (UDB) was upgraded to 'BBB+(lka)' from 'BBB(lka)' with the Outlook revised to Stable from Positive.
It confirmed the ratings on Rajarata Development Bank, Ruhuna Development Bank, Wayamba Development Bank and Kandurata Developm