Details regarding the disposal of bank interest money?

Taking interest, giving interest, and witnessing interest is a cause of curse.

"The Messenger of Allah (peace be upon him) cursed the one who consumes Riba (interest), the one who pays it, the one who writes it down, and its two witnesses, and he said: They are all equal."

However, if a person keeps their permissible (Halal) earnings in a bank for the purpose of safekeeping, then the interest amount received on it should not be left (in the bank); after taking it, it is obligatory to spend it in its proper avenues, and its avenues are three: (1) It should be given in unjust (non-obligatory) taxes. (2) It should be distributed among poor Muslims without the intention of reward. (3) It should be spent on public welfare works. But out of these three avenues, the first two are agreed upon (by consensus), and the third avenue has a difference of opinion (Mukhtalaf Fih), and acting upon what is agreed upon is better than what is disputed.

(Book: Habib al-Fatawa / Vol: 5 / Pg: 158)