The most common and most likely answer to this crossword clue is the 5 letter word BONUS
I've seen this crossword clue in The Times
B
O
N
U
S
More clues leading to the result BONUS
- Having bosun at sea is a plus
- Primarily bear responsibility for extra dividend
- Bishop having responsibility for extra payment
- British working with American commission
- Extra payment in end for job with responsibility
- What follows a burden or a blessing
- Premium book about the country
- Reward bishop with responsibility
- Reward bishop on openings for unrecognised Samaritans
- Reward from bishop — our treat
Buddy explains!

The straight part
We know that "extra dividend" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case extra dividend = bonus.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 BONUS mean?
BONUS noun- Something extra that is good; an added benefit.
- An extra sum given as a premium, e.g. to an employee or to a shareholder.
- An addition to the player's score based on performance, e.g. for time remaining.
- One or more free throws awarded to a team when the opposing team has accumulated enough fouls.
- To pay a bonus, premium