Meaning of “boil down to sth” - Learner’s Dictionary

boil down to sth

phrasal verb with boil us uk /bɔɪl/ verb [ I, T ]

If a situation or problem boils down to something, that is the main reason for it:

The problem boils down to one thing - lack of money.

(Definition of “boil down to sth” from the Cambridge Learner’s Dictionary © Cambridge University Press)