Description: Actuarial systems access and change controls are hot topics these days as modeling continues to increase in complexity and as new modeling regulations may begin to crest over the horizon. Many companies are currently in the process of either formalizing their actuarial system access and change control protocols, or are reevaluating and strengthening their existing control processes in response to identified deficiencies or in conjunction with new actuarial system implementations. With these undertakings in mind, this article discusses a number of valuable components commonly incorporated in formal systems access and change control protocols. Also discussed are leading practices identified in the SOA publication “Actuarial Modeling Controls: A Survey of Actuarial Modeling Controls in the Context of a Model-Based Valuation Framework (December 2012)”, and from the Institute and Faculty of Actuaries.