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Advisor Overview


Terence Avella, a senior principal in the State and Local Tax Group of Berdon LLP, brings more than 15 years of combined experience in the accounting profession and private sector.  Mr. Avella has advised client management teams on a wide array of federal, state, and local tax matters including all phases of planning, compliance, and provision.  He has also performed extensive legal research and written draft memoranda of law on various matters. 

Mr. Avella's experience encompasses areas that include:

  • Income and franchise tax consulting
  • Sales and use tax advisory
  • Tax recovery services
  • Mergers and acquisitions and other transactions tax advice
  • Tax accrual and provision compliance
  • Tax modeling
  • Nexus issues including sourcing of income and apportionment
  • Credits and incentives consulting
  • Audit defense
  • Voluntary disclosure consulting


American Bar Association
Council of State Taxation
Institute for Professionals in Taxation
New York State Bar Association

Mr. Avella has written on tax incentives for Lower Manhattan for the Journal of Multistate Taxation and Incentives and been interviewed on New York State property audits in Bisnow and economic nexus issues in Crain's New York Business.


Terence Avella graduated from the University of Scranton with a Bachelor of Arts in Accounting.  He received a Juris Doctor degree and a Master of Business Administration degree in Finance from Hofstra University. Mr. Avella earned his Master of Laws in Taxation from New York University School of Law. He has been admitted to the bar in New York State and can practice before the US Tax Court and the US District Court, Eastern and Southern Districts.