The most common and most likely answer to this crossword clue is the 10 letter word ALLOWANCES
I've seen this crossword clue in Independent
A
L
L
O
W
A
N
C
E
S
More clues leading to the result ALLOWANCES
Buddy explains!

The straight part
We know that "benefits" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case benefits = allowances.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 ALLOWANCES mean?
ALLOWANCES noun- Permission; granting, conceding, or admitting
- Acknowledgment.
- That which is allowed; a share or portion allotted or granted; a sum granted as a reimbursement, a bounty, or as appropriate for any purpose; a stated quantity.
- Abatement; deduction; the taking into account of mitigating circumstances
- A customary deduction from the gross weight of goods, differing by country.
- A permitted reduction in the weight that a racehorse must carry.
- A child's allowance; pocket money.
- (minting) A permissible deviation in the fineness and weight of coins, owing to the difficulty in securing exact conformity to the standard prescribed by law.
- Approval; approbation
- License; indulgence