Tax Controversy

Concepcion Global’s tax controversy team helps US and cross-border companies, tax-exempt organizations, and individuals resolve complex contentious tax matters.  We represent clients in complex tax issues at every stage of a US federal or cross-border tax controversy matter.

We represent clients in IRS examinations, including responding to Information Document Requests and confer with taxpayer representatives to develop strategies to obtain optimal results for our clients. We often provide this representation in complex cases where cross-border tax issues require extensive consideration and analysis.  

For multi-jurisdictional criminal tax investigations, we advise clients on treaty interpretation, tax information exchange agreements (TIEAs), Competent Authority proceedings, summons and subpoena enforcement, and other U.S. and intra-governmental investigatory procedures.