this one's on me

this one's on me

I will pay for this particular purchase. Hey, if you want to get a coffee too, this one's on me. No, no, put your credit card away—this one's on me.
See also: on, this
Farlex Dictionary of Idioms.
See also:
  • be remembered as (something)
  • be remembered as/for something
  • be remembered for (something)
  • at (one's) doorstep
  • at doorstep
  • at expense
  • at somebody's expense
  • at someone's expense
  • at (one's) expense
  • be in somebody's good graces