Rethinking the Use of Credit Ratings in Capital Regulations: Evidence From the Insurance Industry

Causes of the financial crisis

Kathleen Weiss Hanley and Stanislava (Stas) Nikolova

The Review of Corporate Finance Studies, 2021, vol. 10, issue 2, 347-401

Abstract: We analyze an initiative by insurance regulators to reform capital regulations for mortgage-backed securities (MBS) by replacing credit ratings with third-party estimates of expected credit losses and by considering an insurer’s exposure to future losses when determining regulatory capital. After implementation, insurers are less likely to sell distressed MBS, gains trade corporate bonds, and/or raise external financing. However, the new regime allows insurers to purchase more low-rated MBS at significant capital savings and insurers with greater capital savings are more likely to do so. Our analysis highlights the potential costs and benefits of an alternative methodology for determining regulatory capital. JEL (G11, G18, G22, G28, G32, G38).Received May 6, 2019; editorial decision April 4, 2020 by Editor Andrew Ellul.

Date: 2021
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