buck stops here

the buck stops here

The ultimate responsibility is mine. A set phrase often used when the speaker intends to take action in a situation marked by indecision or inaction. This strike can't go on any longer, so the buck stops here—I will personally meet with the head of the union today.
See also: buck, here, stop
Farlex Dictionary of Idioms.

buck stops here

The need to act or take responsibility, that other people pass on to still other people, ultimately ends up here. (An expression made famous by U.S. President Harry Truman, about the finality of decisions a president must make. See also pass the buck.) After everyone else has avoided making the decision, I will have to do it. The buck stops here.
See also: buck, here, stop
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • buck stops here, the
  • the buck stops here
  • How long is a piece of string?
  • how/what about...?
  • how about
  • (one's) best foot forward
  • best foot forward
  • eggs is eggs
  • from my cold, dead hands
  • kicking and screaming