[2] In Biscay, the name "BBK" is maintained as a trademark of Kutxabank, an entity of which the foundation owns part of the shareholding (as of December 2023, 57%).

Its full name was Bilbao Bizkaia Kutxa, Aurrezki Kutxa eta Bahitetxea (in Spanish Caja Bilbao Vizcaya, Caja de Ahorros y Monte de Piedad).

The savings bank had minority investments in the following companies: Iberdrola 6,84%, Euskaltel 33,99%, Enagas 5%, Red Eléctrica 2,2%.

On September 16, 2011, the extraordinary assembly of BBK approved the creation of Kutxabank, through which it has been conducting its financial activities since January 1, 2012.

Kutxabank was established through a SIP (Sistema Institucional de Protección) alongside Caja Vital and Kutxa.