OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating of “a-” of National Guaranty Insurance Company of Vermont (NGIC) (Burlington, VT). The outlook of these Credit Ratings (ratings) remains stable. The ratings reflect NGIC’s balance sheet strength, which A.M. Best categorizes as very strong, as well as its strong operating performance, limited business profile and appropriate enterprise risk management. The