Marlies De Ruiter

Marlies is an EY Netherlands Partner and EY Global International Tax Services Policy Leader. She advises corporates and governments on the latest tax policy developments, BEPS, dispute resolution mechanisms, transfer pricing, tax treaty issues and Mandatory Disclosure Regime.

With broad experience in international tax policy, specifically BEPS; Marlies was previously the Head of the Tax Treaty, Transfer Pricing and Financial Transactions Division of the OECD’s Centre for Tax Policy and Administration. Under her leadership, the OECD developed 7 of the 15 BEPS actions, including the actions on tax treaties and transfer pricing.

Before joining the OECD, Marlies gained 20 years of experience in direct taxation and international tax issues at the Dutch Ministry of Finance. In her role as Deputy Director of the International Tax Policy and Legislation Directorate, she led the competent authority function in the Netherlands in relation to mutual agreement and EU arbitration procedures.

How Marlies is building a better working world

Tax policy developments feed into the tax world of the future. By contributing to the policy debate and bringing policy developments to businesses and the Global EY network, Marlies helps build a tax world that takes account of the needs and wishes of business. Moreover, she helps businesses understand, anticipate and help implement these new policy measures. In addition, by actively assisting clients with controversy and potential misapplication or misunderstanding of the internationally agreed tax rules by tax administrations, Marlies contributes to a predictable and principled corporate tax environment.