3 Colo. Code Regs. § 702-5-1-10-2
The purpose of this regulation is to ensure that property and casualty insurance rates are not excessive, inadequate or unfairly discriminatory by establishing the requirements for rate and rule filings. This regulation contains annual rate filing requirements for homeowners and private passenger automobile insurance. These lines of business are specifically included in this regulation because these products are widely purchased by consumers. Annual rate filings, rather than other methods the Division of Insurance (Division) may use, are preferred because of the prospective nature of the information contained in rate filings. Since a company's rates filed with the Division must be used until replaced by another rate filing, the Commissioner of Insurance cannot determine if rates included in prior rate filings continue to be appropriate for current or future economic conditions, or adequately reflect recent Colorado loss experience. Rate filings are reasonable and necessary means to ensure that current rates are appropriate and compliant with Colorado statutes and regulations.
3 CCR 702-5-1-10-2