The most common and most likely answer to this crossword clue is the 8 letter word AMOUNTED
A
M
O
U
N
T
E
D
Buddy explains!
The straight part
We know that "It’s added up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’s added up = amounted.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 AMOUNTED mean?
AMOUNTED verb- (followed by to) To total or evaluate.
- (followed by to) To be the same as or equivalent to.
- To go up; to ascend.