The most common and most likely answer to this crossword clue is the 6 letter word REPAYS
I've seen this crossword clue in The Guardian
R
E
P
A
Y
S
More clues leading to the result REPAYS
Buddy explains!

The straight part
We know that "yields" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case yields = repays.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does REPAYS mean?
REPAYS verb- To pay back.