IR Silver Member

Karl Horsburgh

B.A., F.C.A., Réviseur d’Entreprises Agrées, CCC International Audit Services S.àr.l. (IAS)

Member Details

  • Luxembourg

Exclusive IR Member for:

  • Offshore Services
15 rue Edward Steichen, 4th Floor
Luxembourg L-2540 Luxembourg

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After receiving a BA Honours Degree in Economics and Accounting in 1979, Karl trained as a Chartered Accountant in the United Kingdom and qualified in 1983. The same year he moved to Luxembourg to work for a Fiduciaire before joining Deloitte, Haskins & Sells in 1985. In 1989 Deloitte merged with KPMG and Karl was appointed as a tax partner. He specialised in international tax planning and financial engineering for multinational clients.

In 1993 Karl created Horsburgh & Co. The firm expanded to 20 people and two partners and in 2008 was restructured into HT Group which consisted of Company and Accounting Services, to provide company formation, administration, corporate and VAT tax compliance and accounting services and Tax an Salary Services providing personal tax and salary administration services both supervised by the Ordre des Expert Comptables (OECL) . Also part of the group was International Audit Services (IAS) which provided company audit services as a Réviseur d’Entreprises Agrées as a member of the Institute des Réviseur d’Entreprises (IRE) and supervised by the Luxembourg Financial Supervisory Authority (CSSF).

In 2012, HT Group was taken over by the OIL/Vistra Group. Karl, as Managing director of IAS continues as a Réviseur d’Entreprises Agrées to provide company audits and international tax planning and financial engineering for corporations and HNWI which leads to the creation of corporate structures and investment vehicles based in Luxembourg and other European and other interesting jurisdictions. 

30 years of experience in Luxembourg have taught him to “Think outside the box and cross border”. 

Karl is also the honotrary chairman of the Luxembourg Business Angel Network, an honorary member of the council of the British Chamber of Commerce for Luxembourg and has been made a "Chevalier de la Couronne de Chaines" by the Luxembourg Government for services to the accounting profession in Luxembourg.

Firm Description

International Audit Services S.àr.l. (IAS) offers clients a Luxembourg authorised qualified auditing and assurance service. 

AUDIT means for us that we are:

Authorised and approved by the Commission de Surveillance du Secteur Financiére (CSSF) as a Cabinet de Révision Agrées (CRA), the Institut des Réviseurs d’Entreprises (IRE) in Luxembourg and the Institute of Chartered Accountants in England and Wales (ICAEW). IAS is managed by Karl Horsburgh who himself is a Fellow of the Institute of Chartered Accountants in England and Wales (FCA) and a Réviseur d’Entreprises Agrées (REA) with over 30 years’ experience in auditing, taxation and accounting.

As such, IAS prides itself at providing an;

Uncomplicated audit service performed by staff who can converse with clients in their language of choice to plan and perform our audit, discuss with the client, issue a management letter and advise our clients in such languages as English, French, German, Luxembourgish, Italian and Spanish.

We are;

Dedicated to our profession to provide the highest quality service with added value and advice to our international and multinational clientele in whatever sector of the economy that they are active in.

We use;

International Standards on Audting (ISAs) as our guiding principles for the audit of those entities that are required by law to have an audit or for companies who optionally decides to do so. The keystone of our audit approach is to obtain a thorough understanding of the operations and activities of your companies, the internal control system and the accounting system. The aim is to identify and to assess of potential risks of misstatement in the financial statements. In order to be efficient with our audit procedures, we use the world-renowned audit software CaseWare. This tool facilitates the management of the risks that the accounts contain anomalies, the development of the appropriate audit procedures and the documentation of the conclusions reached for the issuance of our audit report.

We undertake to be;

Timely in providing our service. We use experienced staff to work together with the client’s financial staff and management to be as efficient with the clients’ as with our time and therefore to be able to offer the most value-for-money fee possible. 

Other Services: In addition to audit we also offer:

  • Assurance on legal requirements related to specific transactions (contributions in kind, mergers, splits, interim dividend distribution, liquidations…)
  • Limited reviews
  • Agreed upon procedures
  • Bookkeeping services for non-audit clients
  • Preparation of statutory and consolidated annual accounts in Luxembourg GAAP for non-audit clients
  • Preparation of tax returns
  • VAT registrations and VAT returns
  • Liaising with Luxembourg tax inspectors
  • Financial due diligence
  • Data compilation