Atty. Daniel Thomas Hartnett

Atty. Daniel Thomas Hartnett

Daniel Thomas Hartnett is a lawyer practicing federal tax litigation, federal tax administrative practice, federal criminal defense law and 5 other areas of law. Daniel received a B.A. degree from University of Notre Dame in 1974, and has been licensed for 49 years.

Chicago Chicago 49 yrs experience 49 year
Call (312) 535-4941 Book Appointment

Profile Summary

About Daniel Thomas Hartnett at a glance

Daniel Thomas Hartnett is a Member based in Chicago, Illinois, practicing at Martin, Brown, Sullivan, Roadman & Hartnett, Ltd.. They have 49+ years of legal experience, licensed to practice since 1977. Their practice focuses on criminal defense, business, tax, tax litigation, and federal crimes. Admitted to practice in Illinois (1977), U.S. District Court, Northern District of Illinois (1977), U.S. Court of Military Appeals (1978), and U.S. Supreme Court and U.S. Tax Court U.S. Court of Appeals, Fifth, Seventh, Eighth and Eleventh Cir (1986). Educated at Loyola University (J.D., 1977) and University of Notre Dame (B.A., 1974). Recognitions include AV Preeminent. Active member of Chicago, Illinois State and American Bar Associations. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Daniel Thomas Hartnett is a lawyer practicing federal tax litigation, federal tax administrative practice, federal criminal defense law and 5 other areas of law
  • Daniel received a B.A. degree from University of Notre Dame in 1974, and has been licensed for 49 years
  • Daniel practices at Martin, Brown, Sullivan, Roadman & Hartnett, Ltd. in Chicago, IL

Practice Areas Explained

Daniel Thomas Hartnett's Areas of Practice

Each practice area below reflects the types of cases Daniel Thomas Hartnett handles, with a brief overview of what that area of law covers.

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.

Daniel Thomas Hartnett is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Illinois →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Daniel Thomas Hartnett is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Tax Law

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

Daniel Thomas Hartnett is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Illinois →

Tax Litigation

Daniel Thomas Hartnett is one of 3,110 tax litigation attorneys indexed nationally. Browse tax litigation attorneys in Illinois →

Federal Crimes

Daniel Thomas Hartnett is one of 6,773 federal crimes attorneys indexed nationally. Browse federal crimes attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois 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 Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Daniel Thomas Hartnett

Where is Daniel Thomas Hartnett's law office located?
Daniel Thomas Hartnett's law practice is located in Chicago, Illinois. The firm is Martin, Brown, Sullivan, Roadman & Hartnett, Ltd.. You can contact the office directly through this profile page.
What practice areas does Daniel Thomas Hartnett handle?
Daniel Thomas Hartnett focuses on criminal defense, business, tax, tax litigation, federal crimes. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Daniel Thomas Hartnett practiced law?
Daniel Thomas Hartnett has 49+ years of legal experience and has been licensed since 1977.
Where did Daniel Thomas Hartnett go to law school?
Daniel Thomas Hartnett earned their education at (J.D., 1977); (B.A., 1974).
How can I contact Daniel Thomas Hartnett for a consultation?
You can contact Daniel Thomas Hartnett 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 Daniel Thomas Hartnett received?
Daniel Thomas Hartnett's notable recognition includes: AV Preeminent.

Education

J.D.
Loyola University
- 1977
B.A.
University of Notre Dame
- 1974

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1977
U.S. District Court, Northern District of Illinois
Admitted: 1977
U.S. Court of Military Appeals
Admitted: 1978
U.S. Supreme Court and U.S. Tax Court U.S. Court of Appeals, Fifth, Seventh, Eighth and Eleventh Cir
Admitted: 1986

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