Wis. Stat. § 626.13: Approval of rates and rating plans.

The bureau shall file with the commissioner on behalf of its members every manual of classifications, rules and rates, every rating plan and every modification of any of them proposed for use in this state. Every such filing shall state its proposed effective date. The bureau shall also file the information upon which it supports the filings. All filings must comply with the law and shall not be effective nor used until approved by the commissioner. A filing that has been on file for 30 days is deemed to meet the requirements of ss. 626.11 and 626.12 unless the commissioner earlier disapproves in a written order.