The most common and most likely answer to this crossword clue is the 10 letter word EXAGGERATE
I've seen this crossword clue in The Daily Telegraph
E
X
A
G
G
E
R
A
T
E
Buddy explains!
The straight part
We know that "Put too much into an account" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case put too much into an account = exaggerate.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 EXAGGERATE mean?
EXAGGERATE verb- To overstate, to describe more than is fact.