Dennis Sweeney

Managing Director, State and Local Taxes

BDO New York - Park Avenue Office



Executive Summary

Dennis Sweeney is a Managing Director in BDO’s Northeast State and Local Tax practice located in New York, New York specializing in sales and use tax consulting. 

Sweeney has over 30 years of experience in Indirect Taxes.  He has worked with clients in a wide range of industries, including pharmaceutical, communications, technology, retail, transportation, and financial services companies.

Examples of expertise in the state and local tax area include:
  • Identifying and obtaining refunds of overpaid sales and use tax for various types of clients with multistate activities.
  • Assisting clients with identifying multistate nexus issues and quantifying any tax liabilities.
  • Performing multistate sales and use tax research to determine application to clients’ products and services.
  • Assisting clients with resolving tax liabilities through voluntary registration with state tax officials.
Prior to joining BDO, Sweeney worked for the states of Illinois and Minnesota Departments of Revenue as a sales and use tax auditor and two of the Big Four accounting firms as a sales and use tax manager. 

Professional Affiliations

Institute of Professionals in Taxation


St. Thomas Aquinas College, Sparkill, NY
B.S. in Accounting