The most common and most likely answer to this crossword clue is the 8 letter word CASHIERS
I've seen this crossword clue in The Guardian
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More clues leading to the result CASHIERS
Buddy explains!

The straight part
We know that "Sacks/those that take money" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sacks/those that take money = cashiers.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 CASHIERS mean?
CASHIERS verb- To dismiss (someone, especially military personnel) from service
- To discard, put away
- To annul
- One who works at a till or receives payments.
- Person in charge of the cash of a business or bank.