Atty. Michael John Hannigan

Atty. Michael John Hannigan

Michael John Hannigan is a lawyer practicing finance, financial markets and services, construction & development and 1 other area of law. Michael received a A.B. degree from Dartmouth College in 1971, and has been licensed for 51 years.

New York New York 51 yrs experience 51 year
Call (917) 997-4810 Book Appointment

Profile Summary

About Michael John Hannigan at a glance

Michael John Hannigan is a Partner based in New York, New York, practicing at King & Spalding LLP. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on tax. Admitted to practice in New York (1975). Educated at Georgetown University (J.D., 1974) and Dartmouth College (A.B., 1971). Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Michael John Hannigan is a lawyer practicing finance, financial markets and services, construction & development and 1 other area of law
  • Michael received a A.B. degree from Dartmouth College in 1971, and has been licensed for 51 years
  • Michael practices at King & Spalding LLP in New York, NY

Practice Areas Explained

Michael John Hannigan's Areas of Practice

Each practice area below reflects the types of cases Michael John Hannigan 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.

Michael John Hannigan 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 Michael John Hannigan

Where is Michael John Hannigan's law office located?
Michael John Hannigan's law practice is located in New York, New York. The firm is King & Spalding LLP. You can contact the office directly through this profile page.
What practice areas does Michael John Hannigan handle?
Michael John Hannigan focuses on tax. Each practice area listed reflects experience handling cases of that type in New York.
How long has Michael John Hannigan practiced law?
Michael John Hannigan has 51+ years of legal experience and has been licensed since 1975.
Where did Michael John Hannigan go to law school?
Michael John Hannigan earned their education at (J.D., 1974); (A.B., 1971).
How can I contact Michael John Hannigan for a consultation?
You can contact Michael John Hannigan 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.
Georgetown University
- 1974
A.B.
Dartmouth College
- 1971

Bar Admissions

New York
Admitted: 1975

Reviews

These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.