Colleen O’Neill

EY US National Tax Department Leader, International Tax and Transaction Services

Experienced tax professional focused on international tax policy.

Areas of focus

Colleen serves as leader of the National Tax Department International Tax and Transaction Services practice.

She leads a group of world-class professionals who advise on tax-efficient global structures and US taxation of cross-border transactions, including financing, acquisition, disposition, reorganization, integration, repatriation, supply chain matters and foreign tax credit planning.

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