Since the introduction of the European Central Bank (ECB) supervisory expectations for Climate-related & Environmental Risks, now Climate and Nature (C&N), formalised in the ECB Guide of November 2020 and the 2025 press release, the materiality assessment has served as a foundational requirement for integrating C&N risks into institutions’ enterprise-wide risk management frameworks. Over the past years, this early regulatory push ensured that the methodology for assessing climate risk materiality became both familiar and widely embedded across institutions.
Published on 20 January 2026, CSSF Circular 26/905 introduces a major shift in how Less Significant Institutions (LSIs) in Luxembourg must organise, govern, and operationalise their approach to environmental, social and governance (ESG) risks. Yet despite its significance, the circular has so far received surprisingly little attention, an oversight that could leave institutions unprepared for a complex regulatory transition. This article highlights what the circular requires, why it matters, and why institutions should act now.
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The European Central Bank ("ECB"), on July 24th, announced a public consultation on Guide on effective Risk Data Aggregation and Risk Reporting (“RDARR”). The consultation is opened until October 6th and the ECB invites comments from Banks and other stakeholders on effective Risk Data Aggregation and Risk Reporting.
As stated in the March tripartite agreement, a new tax credit, the “Crédit d'Impôt Conjoncture” (economic tax credit) will increase salaries retroactively from January 2023.
On 13 July 2023, the Luxembourg Government presented the draft law no. 8276 to the Luxembourg Parliament. The Draft Law proposes changes to the current investment tax credit regime by increasing the rates of the global ITC and introducing a new ITC for investments and expenses related to the digital transformation and the ecological and energy transition. The proposed measures are planned to apply as from tax year 2024.
On 30 June 2023, the Luxembourg tax authority issued the updated guidance in form of an FAQ (the “Guidance”) on the law implementing the EU Directive on the mandatory disclosure rules and exchange of cross-border tax arrangements (“DAC 6”). The Guidance contains welcome clarifications concerning hallmarks C1 and E3, as well as an explanation regarding the notification obligations of persons covered by the legal professional privilege.
On 30 March 2023, Luxembourg Administrative Tribunal (the “Tribunal”) rendered a decision denying the use of carried forward tax losses to a Luxembourg company (“LuxCo”) based on the abuse of law provision (the “Decision”). The case concerned tax losses dating from a period during which LuxCo was a holding company, and which it intended to use after a number of years of being a dormant company in order to offset capital gain realised from the disposal of immovable property.
On 9 June 2023, the Luxembourg tax authorities (“LTA”) issued a circular L.I.R. n°168quater/1 (the “Circular”) clarifying the application of the reverse hybrid rules, as provided for in article 168quater of the Luxembourg Income Tax Law (“LITL”). Additionally, a FAQ on the related tax form 205 was published, detailing the tax compliance obligations of reverse hybrid entities.
Advocate General Juliane Kokott challenged the European Commission’s claim that Luxembourg provided unauthorized state aid to Amazon through tax advantages. In her Opinion on Amazon case (C-457/21), the AG highlights the critical flaws in the Commission’s approach, as well as supports the annulment of the Commission’s decision by the General Court. Nevertheless, the final judgment rests with the Court of Justice of the European Union.
The European Union finance ministers have reached a political agreement on the updated compromise text for the draft Council Directive amending Directive 2011/16/EU on administrative cooperation in the field of taxation. The DAC8 Directive, among other, introduces tax transparency rules for crypto-assets and extends the automatic exchange of advance cross-border rulings, under certain conditions. It is expected to be formally adopted in early June 2023.
Further to the decision of the General Court in the Engie Cases, Engie and Luxembourg appealed before the CJEU. In her Opinion delivered on 4 May, AG Kokott suggests that the CJEU should uphold the appeals, set aside the judgment of the General Court and annul the decision of the EC.
As the world grapples with the impacts of climate change, financial institutions and regulatory bodies increasingly recognise the importance of integrating sustainability into their operations. In response to this growing need, Luxembourg's Commission de Surveillance du Secteur Financier (CSSF) has recently outlined its supervisory priorities in sustainable finance, demonstrating its commitment to shaping a more environmentally and socially responsible financial sector.
On 28 March 2023, Luxembourg government introduced bill no. 8186 which proposes new procedures for concluding bilateral and multilateral advance pricing agreements, clarifies the conditions for contesting tax assessments, and outlines specific transfer pricing documentation requirements. The Draft Bill also introduces new bookkeeping requirements, and enhances administrative cooperation between the Luxembourg tax authority and other public authorities.
Following the monthly meeting of the Index Commission, the STATEC has confirmed the triggering of a new salary indexation as of 1 April 2023.
On 27 January 2023, the Luxembourg Administrative Tribunal (the “Tribunal”) pronounced its judgment in case n° 42432 relating to the tax treatment of redemption of a share class. In this landmark decision, the Tribunal dealt with the issue of whether the repurchase of such a class of shares, followed by their cancellation and a reduction in the share capital, triggers Luxembourg withholding tax (“WHT”). Based on the decision of the Tribunal, the redemption should qualify as a capital gain at the level of the shareholder up to the amount corresponding to the fair market value of the redeemed shares.
This year’s Grant Thornton IBR research into Women in Business looks at why diverse workforces must be at the core of every sustainable business, why it’s the responsible thing to do, as well as the right thing commercially. For the last 19 years, we’ve tracked the rate of progress in the proportion of women in senior positions within mid-market businesses globally.
The 2022 tax forms are here! Discover our payroll newsflash and learn more about new rules in 2023 at a glance.
On 14 February 2023, the European Union adopted the revised list of non-cooperative jurisdictions for tax purposes, whereby British Virgin Islands, Costa Rica, Marshall Islands and Russia were added to the list. The Blacklist entered into force on 21 February 2023, upon its publication in the Official Journal of the EU. It is now composed of 16 jurisdictions, with the next revision due in October 2023.