Firms and investment funds that wish to benefit from the 12-month transitional regime of Luxembourg's Brexit laws are required to notify the Commission de Surveillance du Secteur Financier no later than 15 September 2019. This applies to Luxembourgeois UCITS firms and firms licensed in the UK under the aegis of CRD IV, MiFID II, PSD2 and/or the E-money Directive.

Dedicated “Brexit notification forms” are now available for all firms and investment funds through the eDesk portal, which is to be found at https://www.cssf.lu/edesk. Any date indicated on the forms  is based on the assumption of a no-deal Brexit occurring on 31 October. Any entity that has not submitted a notification through the eDesk portal by 15 September will not be entitled to benefit from the transitional regime and will have to cease all business as of the date of a no-deal Brexit.