
The firm’s entire regional marketing business is estimated to be worth around $170 million.
Visa's chief marketing officer, Antonio Lucio, said in a statement that the San Francisco-based corporation was seeking a more "unified approach" to its marketing initiatives.
The reorganisation is due to take effect from the start of next year, while media planning and buying duties in the region will continue to be handled by Omnicom Group sister agency OMD.
Representatives from TBWA were unable to comment on the developments.