The most common and most likely answer to this crossword clue is the 2 plus 4 letter word ON TICK
I've seen this crossword clue in Financial Times
O
N
T
I
C
K
More clues leading to the result ON TICK
- Working, get correct mark, attaining credit
- Part of season ticket to be paid for at a later date
- By instalments, fine assumes trust, I see
- Working, getting correct mark, attaining credit
- Allowed to purchase bookswith payment deferred
- Time behind bars, maybe, following round to be paid for later
- Some season tickets include deferred payments
Buddy explains!
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.