John J. Callahan, CPA

John provides tax consulting and compliance services to businesses and individuals, drawing on a broad range of experience to address both ongoing tax needs and longer-term planning. His work includes cost segregation studies, multistate compliance, state and local tax consulting, mergers and acquisitions tax planning, personal financial and estate planning, and tax examination representation. He serves domestic and international clients across industries including automotive dealerships, manufacturing, distribution, and real estate. 

Cost segregation is a particular area of John’s practice, where he helps clients identify potential tax benefits through cost segregation studies and assignment of lives analyses. He also assists clients in identifying state compliance issues and navigating voluntary disclosure procedures. John began his accounting career in 1992 and joined Tronconi Segarra & Associates in 2001, progressing through Manager, Senior Manager, and Principal before becoming Partner. 

Having spent most of his life in upstate New York, John enjoys golf, fly fishing, hiking, boating, gardening, and cooking, along with following the Buffalo Bills and Sabres. He has been married since 1998 and has three children. 

Professional Experience 

• Tronconi Segarra & Associates 
  Partner, 2001 to present 

• DeJoy, Knauf & Blood 
  1997 to 2001 

• Sciarabba Walker & Co. 
  1992 to 1997 

Areas of Expertise 

• Cost segregation studies 
• State and local tax consulting 
• Multistate tax compliance 
• Mergers and acquisitions tax planning 
• Personal and estate tax planning 

Education 

• State University of New York at Albany 
  Bachelor of Science in Accounting, 1992 

Licenses & Professional Affiliations 

• Certified Public Accountant, New York 
• American Institute of Certified Public Accountants