W. Va. Code § 33-31-7 – Reports and statements.

(a) Captive insurance companies shall not be required to make any annual report except as provided in this article.
(b) On or before March 1 of each year, each captive insurance company shall submit to the commissioner a report of its financial condition, verified by oath of two of its executive officers. Each captive insurance company shall report using generally accepted accounting principles, unless the commissioner approves the use of statutory accounting principles, with any appropriate or necessary modifications or adaptations thereof required or approved or accepted by the commissioner for the type of insurance and kinds of insurers to be reported upon, and as supplemented by additional information required by the commissioner. Except as otherwise provided, each association captive insurance company and each risk retention group shall file its report in the form required by section fourteen, article four of this chapter, and each risk retention group shall comply with the requirements set forth in article thirty-two of this chapter. The commissioner shall by rule propose the forms in which pure captive insurance companies and industrial insured captive insurance companies shall report.
(c) Any pure captive insurance company or an industrial insured captive insurance company may make written application for filing the required report on a fiscal year-end. If an alternative reporting date is granted:
1. (1) The annual report is due sixty days after the fiscal year-end; and
2. (2) In order to provide sufficient detail to support the premium tax return, the pure captive insurance company or industrial insured captive insurance company shall file on or before March 1 of each year for each calendar year-end, pages one, two, three, and five of the "captive annual statement; pure or industrial insured", verified by oath of two of its executive officers.