(74)Directive 2014/65/EU strengthens investment firms' obligations to disclose information on all costs and charges and extends these obligations to relationships with professional clients and eligible counterparties. In order to ensure that all categories of clients benefit from such increased transparency on costs and charges, investment firms should be allowed, in certain situations, when providing investment services to professional clients or eligible counterparties, to agree with these clients to limit the detailed requirements set out in this Regulation. This however should never lead to disapplying the obligations imposed on investment firms pursuant to Article 24(4) of Directive 2014/65/EU. In this respect, investment firms should inform professional clients about all costs and charges as set out in this Regulation, when the services of investment advice or portfolio management are provided or when, irrespective of the investment service provided, the financial instruments concerned embed a derivative. Investment firms should also inform eligible counterparties about all costs and charges as set out in this Regulation when, irrespective of the investment service provided, the financial instrument concerned embeds a derivative and intends to be distributed to their clients. However, in other cases, when providing investment services to professional clients or eligible counterparties, investment firms may agree, for instance, at the request of the client concerned, not to provide the illustration showing the cumulative effect of costs on return or an indication of the currency involved and the applicable conversion rates and costs where any part of the total costs and charges is expressed in foreign currency.