The Department of Labor is adopting a final rule that expands the definition of a fiduciary under ERISA and the Internal Revenue Code as a result of giving investment advice. The final rule treats those who provide investment advice or recommendations for a fee as fiduciaries in a wider array of advice relationships. The rule aims to require advisers and their firms to give advice that is in the best interest of their customers without prohibiting common compensation arrangements by allowing such arrangements under conditions designed to ensure the adviser is acting in accordance with fiduciary norms and basic standards of fair dealing. The rule is effective on April 10, 2017, with the Department providing compliance assistance to help affected parties transition to the new regulatory regime.