The most common and most likely answer to this crossword clue is the 5 plus 5 letter word PENNY PINCH
I've seen this crossword clue in The Daily Telegraph
P
E
N
N
Y
P
I
N
C
H
More clues leading to the result PENNY PINCH
Buddy explains!

The straight part
We know that "to be miserly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to be miserly = penny pinch.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.