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📋 '''Use-and-file''' is a [[Definition:Rate regulation | rate regulatory]] approach under which an [[Definition:Insurance carrier | insurer]] may begin using new or revised [[Definition:Insurance rate | rates]], [[Definition:Policy form | policy forms]], or [[Definition:Rating rule | rating rules]] immediately upon or shortly after implementation, provided that the insurer subsequently files the materials with the relevant [[Definition:Insurance regulator | regulatory authority]] within a specified period. This method occupies a middle ground between strict [[Definition:Prior approval | prior approval]] systems — where regulators must approve changes before they take effect — and fully [[Definition:Open rating | open or deregulated rating]] environments where no filing is required at all. Use-and-file systems are predominantly associated with U.S. state insurance regulation, though similar post-implementation notification frameworks exist in certain other jurisdictions.

⚙️ Under a use-and-file framework, an insurer develops its [[Definition:Actuarial analysis | actuarial justification]] for a rate change and implements the new pricing in the market, then submits the filing to the state [[Definition:Department of insurance | department of insurance]] within a deadline that varies by state — commonly 15 to 90 days after the effective date. The regulator retains the authority to review the filing after the fact and may require modifications or order a withdrawal if the rates are found to be inadequate, excessive, or unfairly discriminatory. This differs from [[Definition:File-and-use | file-and-use]] systems, where the insurer must submit materials before use but may proceed without waiting for explicit approval, as well as from prior approval states, where no rate change can take effect until the regulator formally signs off.

💡 The practical advantage for insurers operating under use-and-file rules is speed to market: carriers can respond to shifting [[Definition:Loss experience | loss trends]], competitive dynamics, or emerging risks without the delays that prior approval processes can impose. This is particularly valuable in fast-moving lines such as [[Definition:Cyber insurance | cyber insurance]] or [[Definition:Commercial auto insurance | commercial auto]], where underlying risk profiles may evolve faster than regulatory review timelines allow. However, the post-implementation review power means insurers still bear regulatory risk — a rate found deficient after months of use may need to be rolled back, potentially creating financial exposure. For regulators, use-and-file balances [[Definition:Consumer protection | consumer protection]] with market efficiency, preserving oversight without bottlenecking innovation.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:File-and-use]]
* [[Definition:Prior approval]]
* [[Definition:Rate regulation]]
* [[Definition:Insurance rate]]
* [[Definition:Department of insurance]]
* [[Definition:Open rating]]
{{Div col end}}

Definition:Use-and-file - Revision history

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