The most common and most likely answer to this crossword clue is the 4 plus 4 letter word BASE RATE
I've seen this crossword clue in The Daily Telegraph
B
A
S
E
R
A
T
E
More clues leading to the result BASE RATE
- Level of interest bishop’s shown over a frightful teaser
- Level of interest when dons dress down
- Fundamental level of interest in the banking world
- How much interest, so far, in censure?
- Level of interest when in lecture
- Meaner goddess engenders a measure of interest
- Bank fixes this — a rebate’s organised
- Graduates are changing by midterm, maybe related to interest
Buddy explains!
The straight part
We know that "Bank fixes this" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bank fixes this = base rate.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.