owe someone one

owe (one) one

To be indebted to someone for something they did. Thanks for not ratting me out to the boss about being late this morning—I owe you one!
See also: one, owe

owe someone one

INFORMAL
If you owe someone one, you feel very grateful to them for something they have done for you. `I've got the engine going again.' `Thanks, mate — I owe you one!'
See also: one, owe, someone

owe someone one

feel indebted to someone. informal
1990 Paul Auster The Music of Chance ‘I guess I owe you one,’ Floyd said, patting Nashe's back in an awkward show of gratitude.
See also: one, owe, someone