AM Best rating scale

AM Best

Rating scale of AM Best

AM Best is specialized in the rating of insurance and reinsurance companies. Its scale includes 7 categories that range from A to C.

Ratings can be supplemented with the signs (+) or (-) to specify the exact level or “Rating Notches”.

Categories	Rating symbols	Rating notches	Comments
Superior	A+	A++	Assigned to insurance companies that have a superior ability to meet their ongoing insurance obligations
Excellent	A	A-	Assigned to insurance companies that have an excellent ability to meet their ongoing insurance obligations
Good	B+	B++	Assigned to insurance companies that have a good ability to meet their ongoing insurance obligations
Fair	B	B-	Assigned to insurance companies that have a fair ability to meet their ongoing insurance obligations Financial strength is vulnerable to adverse changes in underwriting and economic conditions
Marginal	C+	C++	Assigned to insurance companies that have a marginal ability to meet their ongoing insurance obligations Financial strength is vulnerable to adverse changes in underwriting and economic conditions
Weak	C	C-	Assigned to insurance companies that have a weak ability to meet their ongoing insurance obligations Financial strength is very vulnerable to adverse changes in underwriting and economic conditions
Poor	D	-	Assigned to insurance companies that have a poor ability to meet their ongoing insurance obligations Financial strength is extremely vulnerable to adverse changes in underwriting and economic conditions