Certified Reinsurers

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Last Updated: December 23, 2025

Effective January 1, 2018, reinsurers may apply for certified status. This allows a domestic ceding company to reduce collateral requirements and still take full credit for reinsurance recoverables from a certified reinsurer under ch. Ins 52, Wis. Adm. Code, for those contracts entered into or renewed after the reinsurer has obtained certified status. This rule does not prohibit parties to a reinsurance agreement from agreeing to provisions establishing collateral requirements which exceed the minimum requirements.

This page documents the certification process, lists pending applications, and approved certified reinsurers.


Certification Proc​​edure

The Applicant shall submit the Application Checklist for Certified Reinsurers (initial and renewal applications) and any other reasonable requirements deemed necessary for certification by the Commissioner. Upon notice and approval of the application, the effective date will be as of the beginning of the quarter in which the application notice has been posted for 30 days. The status will run through the end of the calendar year unless otherwise determined by the Commissioner. Please see s. Ins 5​2.02 (4m), Wis. Adm. Code  - opens in new window, for the applicable law and regulation on certified reinsurers. Renewal applications are required to be submitted to be considered for certified status in the subsequent calendar year by October 1.

Questions concerning the initial or renewal application process for Certified Reinsurers may be directed to ocireinsurance@wisconsin.gov.


Forms


Qualified Jurisdictions*

Qualified JurisdictionsEffective Date
Bermuda1/1/2018
France1/1/2018
Germany1/1/2018
Ireland1/1/2018
Japan1/1/2018
Switzerland1/1/2018
United Kingdom1/1/2018

* Any accredited US jurisdiction is considered a qualified jurisdiction.


Secure Levels

A Certified Reinsurer will be allowed to post less than 100% collateral and still enable an authorized insurer to qualify for full credit for reinsurance recoverables with respect to reinsurance contracts entered into or renewed on or after the date the reinsurer becomes certified. Secure level conversion is based on the lower of two approved NRSRO ratings (conversion chart - opens in new window).

Secure RatingCollateral Required
Secure - 10%
Secure - 210%
Secure - 320%
Secure - 450%
Secure - 575%
Vulnerable - 6100%

Pending Applications

Pursuant to s. Ins 52.02 (4m) (a) 3., Wis. Adm. Code, this notice is given to request that any person who objects to an applicant listed below being licensed as a Certified Reinsurer in Wisconsin should address written comments, specifying with reasonable detail the nature of the objection, to ocireinsurance@wisconsin.gov. Objections are to be received by the response deadline date mentioned below. The Commissioner may not take final action on the application until at least 30 days after posting the notice required by this paragraph.

Applicant Name

Alien Insurer Identification Number

Certified Reinsurer Identification Number

Response Deadline

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Listing of Certified Reinsurers

Certified Reinsurer

Alien Insurer Identification Number

Certified ​​​Reinsurer Identification Number

Effective Date
of Initial Certification

Current Certification Period

​​

Secure Level

Effective Date of Secure Level

Collateral Required

Arch Group Reinsurance Ltd.

AA-3191531

CR-3191531

01/01/2025

12/31/2026

Secure - 2

01/01/2025

10%

Arch Reinsurance Ltd.AA-3194126CR-319412601/01/201812/31/2026Secure - 301/01/201820%

Chubb Tempest Reinsurance Ltd.

AA-3190770

CR-3190770

01/01/2018

12/31/2026

Secure - 2

01/01/2018

10%

Convex Insurance UK Limited

AA-1120191

CR-1120191

01/01/2022

12/31/2026

Secure - 3


Secure - 4

01/01/2026 - 12/31/2026

01/01/2022 - 12/31/2025

20%


50%

Convex Re Limited

AA-3191400

CR-3191400

01/01/2022

12/31/2026

Secure - 3


Secure - 4

01/01/2026 - 12/31/26

01/01/2022 - 12/31/2025

20%


50%

Endurance Specialty Insurance Ltd.

AA-3194130

CR-3194130

01/01/2020

12/31/2026

Secure - 3

01/01/2020

20%

Fidelis Insurance Bermuda Limited

AA-3191289

CR-3191289

01/01/2022

12/31/2026

Secure - 4

01/01/2022

50%

Fidelis Underwriting Limited

AA-1120175

CR-1120175

01/01/2022

12/31/2026

Secure - 4

01/01/2022

50%

Hannover Rück SE

AA-1340125

CR-1340125

01/01/2018

12/31/2026

Secure - 2

01/01/2018

10%

Somers Re Ltd (formerly Watford Re Ltd.)

AA-3191250

CR-3191250

01/01/2020

12/31/2026

Secure - 4

01/01/2020

50%

Somerset Reinsurance Ltd.

AA-3191332

CR-3191332

04/01/2022

12/31/2026

Secure - 5

04/01/2022

75%

Swiss Reinsurance Company Ltd

AA-1460146

CR-1460146

07/01/2020

12/31/2026

Secure - 2

07/01/2020

10%

TransRe London Limited

AA-1120159

CR-1120159

01/01/2020

12/31/2026

Secure - 2


Secure - 3

01/01/2024 - 12/31/2026

01/01/2020 - 12/31/2023

10%

 20%

XL Bermuda Ltd

AA-3191315

CR-3191315

01/01/2019

12/31/2026

Secure - 2


Secure - 3

01/01/2021 - 12/31/2026

01/01/2019 - 12/31/2020

10%

20%

XL Re Europe SE

AA-1780072

CR-1780072

01/01/2023

12/31/2026

Secure - 2

01/01/2023

10%


Listing of Withdrawn Certified Reinsurers

​ ​
Certified ReinsurerAlien Insurer Identification NumberCertified Reinsurer Identification NumberEffective Date of Initial CertificationExpiration of Certification Period​​

Secure Level

Effective
Date of
Secure Level 
Collateral
Required

Chubb European Group SE

AA-1320152

CR-1320152

01/01/2021

12/31/2023

Secure - 2

01/01/2021

10%
Wilton Reinsurance Bermuda LimitedAA-3190878CR-319087804/01/201912/31/2023Secure - 304/01/201920%
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