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Accounting and tax expertise in Luxembourg


  • NA chartered accountant at the service of entrepreneurs
  • NEffective support from our experts
  • NA digital trust company to help you manage your business
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A tailor-made fiduciary at your side

Our accounting, tax and other services are tailored to your needs. 

WAT Fiduciary, a chartered accountancy firm based in Luxembourg, has over 15 years' experience.

At WAT Fiduciary, we help businesses realise their full potential. We offer management, accounting and tax advisory services tailored to businesses of all sizes in Luxembourg. Whether you're a small or large business, we have the skills and expertise to help you succeed. We are your trusted partner for accounting, management, tax and social secretarial services in Luxembourg.

WAT Fiduciarythe trust company that makes your life easier!

Our accountancy services in Luxembourg

Management consulting

At WAT Fiduciary, Chartered Accountants in Luxembourg, we offer a full range of management consultancy services to help businesses reach their full potential. Our management consultancy services include

    • Setting up a company in Luxembourg
    • Project management
    • Managing administrative formalities
    • Business process optimisation
    • Drawing up a business plan
    • Real-time accounting

We can provide tailor-made management consultancy services to meet the specific needs of your business or company in Luxembourg.


Our team offers a complete accounting service to help you manage your financial situation effectively. Our accountancy services include

    • Bookkeeping in accordance with the rules applicable in Luxembourg
    • Establishment of annual accounts
    • Accounting advice
    • Digital accounting

We have a team of accountancy experts with in-depth knowledge of the laws and regulations in force in Luxembourg. Our accountants are regularly trained in the new accounting rules applicable in Luxembourg. We can provide tailor-made accounting solutions to meet the specific needs of your sole proprietorship or company.


We put all our tax and VAT knowledge at your company's service to manage your tax situation in Luxembourg efficiently. Our tax services include :

    • Tax returns for companies and individuals
    • VAT return
    • Tax advice
    • Tax optimisation

We understand the importance of tax compliance and are committed to providing efficient and personalised tax solutions for your business, while respecting the tax rules in force in Luxembourg. That's why our team of tax specialists has in-depth expertise in the regulations and laws currently in force in Luxembourg for companies and individuals.

Why choose WAT Fiduciary - your fiduciary

At WAT FiduciaryWe are Chartered Accountants and we are committed to providing the highest quality management, accounting and tax advisory services to help businesses grow in Luxembourg and around the world. We offer in-depth accounting expertise, tailor-made solutions and exceptional client service to ensure that our clients are satisfied with our services. We are your trusted partner to help you succeed.

Our trustee is also a member of the Ordre des Experts Comptables.

If you are a company in Luxembourg and are looking for a reliable solution for your accounting and chartered accountancy needs, then WAT Fiduciary is the solution.

Our values


We are committed to keeping our expertise in management, accounting, taxation and setting up a business in Luxembourg up to date. We receive regular training in the latest legal and tax developments, and draw on a network of recognised Luxembourg specialists to offer you high-quality services tailored to your needs. You can count on our expertise to support you at every stage of your business project.


We value a long-term relationship, applying the principles of honesty and integrity on a daily basis.

We are transparent and honest in our communications with our customers, in order to build mutual trust.


A tailor-made fiduciary, offering the highest quality services and accounting expertise for your company, using our know-how and experience to meet the specific needs of each client.


Our human-sized team offers you real support. Please do not hesitate to visit us or call us for any questions.

Do you have a question?

Please fill in your details and our team will contact you as soon as possible.

They trust us

Self-employed, SMEs, financial companies, regulated companies or private individuals: by working with WAT Fiduciary, our clients benefit from expert advice and optimal solutions in accounting, taxation, legal secretariat and more. You too can choose to be well looked after.


Bertrand G.

I am extremely impressed with the level of knowledge and skill of WAT Fiduciary. They have provided me with sound advice on managing my finances and have enabled me to make informed decisions for the future.



Christine W.

I highly recommend WAT Fiduciary for their expertise and personal attention to my financial needs. They have helped me optimize my tax returns and maximize my savings.



Ronald D.

I have worked with WAT Fiduciary for my tax returns and I am very satisfied with their service. They are professional, efficient and always available to answer my questions.