Credit Quality Step
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Bank supervision.
(CQS).
A CQS is a simplified and standardised scale of credit quality, mapped to the credit ratings of the largest credit rating agencies.
The Credit Quality Steps are whole numbers from 1 to 6.
1 is the highest quality, corresponding to ratings of AA- and better in Fitch's and Standard & Poor's (S&P's) ratings.
6 is the lowest quality, corresponding to CCC+ and worse in Fitch's and S&P's ratings.
CQS 1, 2 and 3 correspond to investment grade.
CQS 4, 5 and 6 are non-investment grade.
