Atty. Joseph M. Callahan

Atty. Joseph M. Callahan

Joe has an impressive background and extensive experience in representing clients with serious tax disputes and handling multi-state matters involving the IRS. Here is a summary of Joe's education and experience: Education: Joe earned a B.S. in Public Relations from Syracuse University in 1981.He furthered his education at Syracuse University and obtained both a M.S. in Accounting and a Juris Doctor in 1986.

New York New York 40 yrs experience 40 year
Call (332) 222-7270 Book Appointment

Profile Summary

About Joseph M. Callahan at a glance

Joseph M. Callahan is a Member based in New York, New York, practicing at Mackay, Caswell & Callahan, P.C. (focused on IRS, NYS & Connecticut taxation). They have 40+ years of legal experience, licensed to practice since 1986. Their practice focuses on irs, criminal defense, tax, and creditor rights. Admitted to practice in Connecticut (1986) and New York (1987). Educated at Syracuse University College of Law (J.D., 1986) and Syracuse University (B.S. Syracuse, 1981). Recognitions include AV Preeminent. Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Joe has an impressive background and extensive experience in representing clients with serious tax disputes and handling multi-state matters involving the IRS
  • Here is a summary of Joe's education and experience: Education: Joe earned a B.S. in Public Relations from Syracuse University in 1981.He furthered his education at Syracuse University and obtained both a M.S. in Accounting and a Juris Doctor in 1986

Law School Involvement

  • During his time in law school, Joe was an active member of the Moot Court Board and served as its Chair from 1984 to 1985.He received recognition for his exceptional performance and was awarded the prestigious Order of the Barristers.Joe also served as the Moot Court Advisor to the University's Vice Chancellor, where he worked extensively with the undergraduate Constitutional Law program.Additionally, he gained research experience as a Research Assistant for the Law and Public Policy Department of the business school
  • Teaching and Lecturing: Joe has a passion for sharing his legal knowledge and has taught law at Syracuse University.He has also been involved in numerous continuing legal education programs, where he delivers lectures on various legal matters
  • Professional Experience:Joe has a diverse background, having worked in both the accounting and legal fields.He gained valuable experience during his employment at Deloitte, one of the "Big 6" accounting firms

Practice Areas Explained

Joseph M. Callahan's Areas of Practice

Each practice area below reflects the types of cases Joseph M. Callahan handles, with a brief overview of what that area of law covers.

IRS Disputes & Audits

Joseph M. Callahan is one of 2,917 irs attorneys indexed nationally. Browse irs attorneys in New York →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

Joseph M. Callahan is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in New York →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Joseph M. Callahan is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in New York →

Creditor Rights & Collections

Joseph M. Callahan is one of 42,948 creditor rights attorneys indexed nationally. Browse creditor rights attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New York courts without local counsel or pro hac vice admission.

Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

Frequently Asked

Common questions about Joseph M. Callahan

Where is Joseph M. Callahan's law office located?
Joseph M. Callahan's law practice is located in New York, New York. The firm is Mackay, Caswell & Callahan, P.C. (focused on IRS, NYS & Connecticut taxation). You can contact the office directly through this profile page.
What practice areas does Joseph M. Callahan handle?
Joseph M. Callahan focuses on irs, criminal defense, tax, creditor rights. Each practice area listed reflects experience handling cases of that type in New York.
How long has Joseph M. Callahan practiced law?
Joseph M. Callahan has 40+ years of legal experience and has been licensed since 1986.
Where did Joseph M. Callahan go to law school?
Joseph M. Callahan earned their education at (J.D., 1986); (B.S. Syracuse, 1981).
How can I contact Joseph M. Callahan for a consultation?
You can contact Joseph M. Callahan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Joseph M. Callahan received?
Joseph M. Callahan's notable recognition includes: AV Preeminent.

Education

J.D.
Syracuse University College of Law
- 1986
B.S. Syracuse
Syracuse University
- 1981

Awards

AV Preeminent

Bar Admissions

Connecticut
Admitted: 1986
New York
Admitted: 1987

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