Didier Simon

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Audit & Assurance
Business Advisory
Financial Services
Tax & Accounting

Our Grant Thornton Luxembourg team can provide you with a full range of audit and assurance services including audit of stand-alone annual accounts, audit of...

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Audit of stand-alone annual accounts
At Grant Thornton Luxembourg, our team of experts is specialised in audits of stand-alone annual accounts.
Audit of consolidated annual accounts
Grant Thornton Luxembourg team of experts is specialised in providing audit services to a lot of multinational which have their administrative center located in Luxembourg for whom the consolidated annual accounts have to be audited.
Agreed-Upon Procedures Engagements
In the case of agreed-upon procedures engagement, Grant Thornton Luxembourg performs procedures particularly requested by the client/bank and reports on the findings.
GDPR-CARPA Certification
Grant Thornton Audit and Assurance is accredited by the Commission Nationale pour la Protection des Données (CNPD) to provide GDPR-CARPA certifications for organisations.
Forensic Audit
Grant Thornton Luxembourg has the forensic and business skills to deal with the most complex situations. A multi-disciplinary team of dedicated accountants in consultation with lawyers, IT consultants, insurance experts, valuation specialists and actuaries may be engaged when necessary.
Supervisory Auditor (Commissaire)
Grant Thornton Luxembourg has a dedicated team of experts committed to deliver services to reserved to Supervisory Auditor or "Commissaire aux Comptes".
Liquidation Audit
Grant Thornton Luxembourg has a dedicated team of experts committed to deliver services to reserved to liquidation audit "Commissariat à la liquidation".
Assurance Engagements
Grant Thornton Luxembourg have a dedicated team of experts committed to work on audit and assurance special engagements.
IFRS Services
At Grant Thornton Luxembourg, our experts can help you navigate the complexity of International Financial Reporting Standards (IFRS).
Valuation
Grant Thornton Luxembourg helps clients evaluate and implement various strategic alternatives through our comprehensive suite of corporate value consulting services. From opinions, board solutions and services, to valuation and modeling, we can assist you with value added services throughout the transaction lifecycle.

Business Advisory

As your business grows, our business advisory services are designed to help you achieve your goals. Successful growth often means navigating a complex array of...

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Governance & Business Risk Services
Directors nowadays have increasing responsibilities. Grant Thornton Luxembourg understands that business needs guidance to improve its governance and to establish robust internal controls, by means of effective use of information technology. We offer the personal touch and global reach, ensuring that you get the attention that you deserve.
Structuring & Modeling
Grant Thornton Luxembourg offers workable solutions to maximise your value and deliver sustainable growth. Transactions or reorganisations are significant events in the life of a business, so the stakes are high for both buyers and sellers.
Data Protection and Privacy
EU General Data Protection Regulation (GDPR) - The real challenge consists of remaining compliant with GDPR and in being able to prove this compliance (accountability principle). Grant Thornton Luxembourg can help you with a tailored phase approach.
Regulatory Compliance
At Grant Thornton Luxembourg, we set up a whole team of experts around our “Compliance Compass” approach. No matter if your company is a UCITS, a Management Company, an AIFM, a PFS or an Insurance company, the Compliance Compass shows you an insight of what has to be performed on a monthly basis, whether to prepare work on due time or report to authorities.
Sustainability services and impact reporting
At Grant Thornton, we recognise the need of our clients to operate responsibly and to meet the high standards posed by the sector they operate. We offer pragmatic, tailor-made solutions to our clients and we assist them to make the required transitions towards the implementation of sustainable business practices.
Information Security
Grant Thornton Luxembourg offers Information Security services with a strong security expertise to avoid data breaches. We also have dedicated resources for all your cybersecurity challenges.
Whistleblowing services
Since May 2023, the Whistleblower Law has become effective in Luxembourg. What does this mean for your business? Our experts can advise and help you to set-up internal reporting channels and to comply with the new law.

Financial Services

In an industry that is constantly facing challenges both from the operational, legal, financial and regulatory perspectives, Grant Thornton Luxembourg is...

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Alternative Investment Services
Grant Thornton Luxembourg is a bespoke business partner to established Alternative Investment Fund (“AIF”) Managers (“AIFM”) as well as independent Managers launching start-up Funds and seeking for a single entry point in Luxembourg in order to set-up and manage their Luxembourg domiciled Funds.
Fund Administration
Fund Administration - Grant Thornton Luxembourg offers a full range of tailored solutions to our clients.
Registrar & Transfer Agency Services, Client Reporting
Grant Thornton Luxembourg provides investors with confirmations, final Contract Notes and regular statements upon finalisation of the Fund’s Net Asset Value, We handle all wire payments and transfers, including the processing of distribution dividend payments, and perform in-depth Anti-Money Laundering Counter Terrorism Financing and Know-Your Client due diligence checks on investors.
Fund set-up, Launch & Corporate life
High-quality product structuring and legal services have become a crucial tool enabling industry players to get through the major changes impacting their business development, strategy and organisation as a whole. Our Investment Management practice at Grant Thornton Luxembourg is your one-stop place for expert advice combining pragmatism and a unique in-depth knowledge of the Luxembourg market.
AML Compliance Services
Grant Thornton Luxembourg helps its Clients to keep compliant with AML-CTF laws and regulations and provide an expert skilled team.
Regulatory Reporting Delivery
Grant Thornton Luxembourg has set up a Business Process Outsourcing Solution that manages and mutualises regulatory expertise, reporting solutions and skilled human resources
Legal Support & Corporate Services
Grant Thornton Luxembourg delivers Legal Support & Corporate services.

Tax & Accounting

Grant Thornton Luxembourg has been delivering local and international direct and indirect (VAT) tax, payroll, transfer pricing, corporate finance, reporting,...

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Accounting & Reporting Services
Grant Thornton Luxembourg may explore the specific characteristics of your company in order to provide a personalised assistance in the fields of Accounting & Reporting services.
Direct Corporate Tax Compliance
Grant Thornton Luxembourg may explore the specific characteristics of your company in order to provide a personalised assistance in the fields of corporate tax compliance.
Direct Corporate Tax Advice
Grant Thornton Luxembourg understand the complexity of national and international tax laws. We can unlock your potential for local and international growth.
VAT and Other Indirect Tax Compliance
Handling the day-to-day VAT compliance obligations requires being close to your business. Our VAT compliance business line assists you to ensure that long term reporting processes are implemented and respected with the aim of safeguarding a proper and timely VAT filing. This is important for achieving a VAT compliant environment and mitigating local VAT risks.
VAT and Other Indirect Tax Advice
Our VAT advisory business line is dedicated to keeping you up to date with amended VAT legislation and changes in the administrative practice in Luxembourg and worldwide with our Grant Thornton global VAT network. Specialists review and comment on new EU directives and the latest case law by the Court of Justice of the European Union in order to provide you with advice tailored to your specific needs.
Transaction & Reorganisation
Reorganisations - Transaction Planning - Tax Structuring - M&A. Companies strive to improve their market position with take-overs, mergers and demergers. Strategy and financial tactics are important elements in this respect. Grant Thornton tax specialists may intervene in all stages of the transaction.
Transfer Pricing
The laws surrounding transfer pricing are becoming ever more complex, as tax affairs of multinational companies are facing scrutiny from media, regulators and the public. Grant Thornton Luxembourg can help you manage your transfer pricing risks and find opportunities.
Personal Tax
Our experienced multilingual Personal Tax Team is keen to give you tailored solutions, optimise your situation and help you make decisions. We could assist you with: income tax returns, vat returns, tax assessments, contacts with the tax authorities and assistance by tax audit or tax litigation, tax matters advices, inheritance tax matters, international assignments and trainings.
Cross-Border Tax
Tax policies are constantly evolving and there are a number of complex changes on the horizon that could significantly affect your business. We can help you with practical advice such as VAT and direct tax.
Corporate Finance
Exploring the strategic options available to you as a business or shareholder, advising and project managing the chosen solution, Grant Thornton Luxembourg provide a truly integrated corporate finance offering. Merger & acquisition, buying a business, selling a business, transaction piloting,raising finance to support your business plans.Vendor due diligence, acquisition due diligence, reporting accountant work,operational due diligence, management assessment.
Expatriate Tax
Although international employment has become a standard practice in business life, employers and their assignees are still faced with numerous questions in this area. Grant Thornton Luxembourg can help you to be one step ahead.
Set-up, Restructuring & Business Planning
Grant Thornton Luxembourg is delighted to add value during the implementation of your businesses and to be given the opportunity to grow together with you. Relying on our professionals’ financial expertise will allow you to take dynamic but sustainable decisions.
Corporate Secretarial Services
Grant Thornton Luxembourg provides corporate secretarial services to enable our clients to comply with their legal and administrative obligations in Luxembourg.
Liquidation & Insolvency
Grant Thornton Luxembourg can draw on years of experience in the areas of liquidation and insolvency and then make sensible recommendations on how best to deal with your financial crisis.
Human Resources Management & Payroll
Grant Thornton Luxembourg has been delivering since 1987 Payroll and Human Resources services to private and institutional clients. A team of highly qualified collaborators manages around 5 000 payslips per month and offers related consulting services.

Asset management

At Grant Thornton Luxembourg we provide the expertise and support that the asset management industry needs to thrive in today’s evolving market.

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Banking

Grant Thornton Luxembourg offers dedicated services to banks in Luxembourg including: lifecycle of legal entities, governance improvement and transformation...

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Consumer products

Grant Thornton Luxembourg is dedicated to provide services to consumer products companies.

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Energy & natural resources

Grant Thornton Luxembourg is committed to becoming an eco-friendly participant by supporting companies investing in the use of natural resources and in the...

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European Institutions Desk

The Grant Thornton EU Institutions Desk’s knowledge of public sector combined with Grant Thornton local and global network reach is helping to develop the...

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Expatriates

International mobility - Expatriates' desk from Grant Thornton Luxembourg can provide organisations, HR departments and individuals with a follow-up to help...

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Healthcare

We can help all types of healthcare clients, including hospitals, nurseries, pharmaceutical laboratories, foundations and personal assistance organisations to...

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Information & communications technology

Grant Thornton Technology Hub stems from the ambition to complement the current consulting offering for financial institutions with dedicated technology...

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Liberal professions

Grant Thornton Luxembourg is dedicated to providing a full range of services to liberal professions and freelancers.

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Not for profit

Grant Thornton Luxembourg is dedicated to provide a full range of services to not for profit organisations and charities.

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PFS

Grant Thornton Luxembourg is dedicated to support Professionals of the Financial Sector (investment companies, investment firm, specialised PFS) and create...

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Real estate & construction

Grant Thornton Luxembourg is dedicated to providing a full range of services to Real Estate Investors in Luxembourg, valuations, structuring business,...

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SME

Grant Thornton Luxembourg is dedicated to providing a full range of services to SME and private-owned enterprises.

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MySmartOffice
Grant Thornton Luxembourg offers a new complete online accounting and consulting solution for SMEs named MySmartOffice to access financial and operational information instantly online.

Experience

Didier has over 25 years audit and assurance experience on a wide range of companies from public and private sectors, including commercial companies, industrial companies, public and government-regulated entities.

Didier has an extensive international experience in statutory audit of annual accounts of companies from various sectors (healthcare, research and development, construction and communication sectors). He is also specialised in audit services for state owned companies, financing companies, holding companies and special purpose vehicles (from international groups settled in Luxembourg).

Didier is specialist in Audit and Accounting Practice.

Didier started as Auditor in 1996 and joined Grant Thornton in 2007.

Memberships

Institut des Réviseurs d’Entreprises (Luxembourg)
Public Sector Commission at the Institut des Réviseurs d’Entreprises (Luxembourg)
Member of the Ordre des Experts-Comptables (Luxembourg)

Qualifications

Réviseur d’Entreprises Agréé
Certified Accountant (Expert-comptable)

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Didier Simon

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