Claudio Coello 20 1º. Madrid
Juan Durán Barriga

Of Counsel Tax Law


  • Double Degree in Law (Specialization in Public Law) and Business Administration from Universidad Pontificia de Comillas (1995-2001)
  • He joined the Tax Inspectors Corps (number 1 of the 2004 opposition), being on leave since 2017.


  • Legal Area at JP Morgan Chase (SGIIC) 2000-2001.
  • As a Tax Inspector he has served in the Regional Technical Inspection Office of the Spanish Tax Agency in Catalonia 2005-2007 and has been Administrator of the Customs of Barcelona 2008-2012.
  • Member of the Regional Economic-Administrative Court of Castilla y León 2013-2017.
  • Consultant to the World Bank on the WTO Trade Facilitation Treaty.

In his professional performance he has extensive experience in the conduct of administrative tax procedures (management, inspection, collection, sanctions and review) as well as in economic-administrative claims and administrative litigation.

He has extensive experience in direct and indirect taxation (corporate and high estate tax planning, corporate restructuring) and excise duties (administrative authorisations needed for the manufacture, storage and marketing of products subject to excise duty, including environmental taxes, in particular: Excise Duty on Beer, Excise Duty on Wine and Fermented Beverages, Excise Tax on Intermediate Products and Excise Tax on Alcohol and Derived Beverages. Excise Tax on Hydrocarbons. Special Tax on Electricity. Excise Tax on Fluorinated Greenhouse Gases. Tax on the Production Value of Electric Energy. Excise Tax on Coal)

Due to his time as customs administrator of the Spanish Tax Agency at Barcelona, he is an expert in customs, having advised on tariff classification, origin and value in customs, preparation and presentation of Binding and Origin Tariff Information and consideration of contingencies for suspensions and tariff quotas, countervailing duties, additional duties, customs regimes and VAT on imports, assuming assistance in Customs Inspections in especially complex cases and large companies.


Academic Coordinator of the “Postgraduate Agent and Customs Representative. OAS”, given by COACAB and Ui1.

Academic teacher for students preparing exams for joining the Tax Inspectors Corps and the Technical Treasury Corps.

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