Atty. William James Corcoran

Atty. William James Corcoran

William James Corcoran is a lawyer practicing taxation, transactional tax planning. William received a B.A. degree from Brandeis University in 1985, and has been licensed for 38 years.

New York New York 38 yrs experience 38 year
Call (301) 450-0704 Book Appointment

Profile Summary

About William James Corcoran at a glance

William James Corcoran is a Partner based in New York, New York, practicing at Osler, Hoskin & Harcourt LLP. They have 38+ years of legal experience, licensed to practice since 1988. Their practice focuses on tax. Admitted to practice in Massachusetts (1988) and New York (2006). Educated at University of Chicago (J.D., 1988) and Brandeis University (B.A., 1985). Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William James Corcoran is a lawyer practicing taxation, transactional tax planning
  • William received a B.A. degree from Brandeis University in 1985, and has been licensed for 38 years
  • William practices at Osler, Hoskin & Harcourt LLP in New York, NY

Practice Areas Explained

William James Corcoran's Areas of Practice

Each practice area below reflects the types of cases William James Corcoran handles, with a brief overview of what that area of law covers.

Tax Law

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

William James Corcoran is one of 85,302 tax attorneys indexed nationally. Browse tax 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 William James Corcoran

Where is William James Corcoran's law office located?
William James Corcoran's law practice is located in New York, New York. The firm is Osler, Hoskin & Harcourt LLP. You can contact the office directly through this profile page.
What practice areas does William James Corcoran handle?
William James Corcoran focuses on tax. Each practice area listed reflects experience handling cases of that type in New York.
How long has William James Corcoran practiced law?
William James Corcoran has 38+ years of legal experience and has been licensed since 1988.
Where did William James Corcoran go to law school?
William James Corcoran earned their education at (J.D., 1988); (B.A., 1985).
How can I contact William James Corcoran for a consultation?
You can contact William James Corcoran 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.

Education

J.D.
University of Chicago
- 1988
B.A.
Brandeis University
- 1985

Bar Admissions

Massachusetts
Admitted: 1988
New York
Admitted: 2006

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