Atty. Sherwin Hayes Leff

Atty. Sherwin Hayes Leff

Sherwin Hayes Leff is a lawyer practicing closely held business law, closely held business taxation, real estate tax assessment and 4 other areas of law. Sherwin received a B.S. degree from University of Wisconsin-Madison in 1962, and has been licensed for 59 years.

Chicago Chicago 59 yrs experience 59 year
Call (312) 748-0717 Book Appointment

Profile Summary

About Sherwin Hayes Leff at a glance

Sherwin Hayes Leff is a Member based in Chicago, Illinois, practicing at Leff & Cohen, Ltd.. They have 59+ years of legal experience, licensed to practice since 1967. Their practice focuses on estate planning, business, real estate, tax, and m&a. Admitted to practice in Illinois (1967). Educated at John Marshall Law School (J.D., 1967) and University of Wisconsin-Madison (B.S., 1962). Recognitions include AV Preeminent. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Sherwin Hayes Leff is a lawyer practicing closely held business law, closely held business taxation, real estate tax assessment and 4 other areas of law
  • Sherwin received a B.S. degree from University of Wisconsin-Madison in 1962, and has been licensed for 59 years
  • Sherwin practices at Leff & Cohen, Ltd. in Chicago, IL

Practice Areas Explained

Sherwin Hayes Leff's Areas of Practice

Each practice area below reflects the types of cases Sherwin Hayes Leff handles, with a brief overview of what that area of law covers.

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Sherwin Hayes Leff is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in Illinois →

Business & Corporate Law

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

Sherwin Hayes Leff is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Sherwin Hayes Leff is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Illinois →

Tax Law

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

Sherwin Hayes Leff is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Illinois →

Mergers & Acquisitions

Sherwin Hayes Leff is one of 49,731 m&a attorneys indexed nationally. Browse m&a 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 Sherwin Hayes Leff

Where is Sherwin Hayes Leff's law office located?
Sherwin Hayes Leff's law practice is located in Chicago, Illinois. The firm is Leff & Cohen, Ltd.. You can contact the office directly through this profile page.
What practice areas does Sherwin Hayes Leff handle?
Sherwin Hayes Leff focuses on estate planning, business, real estate, tax, m&a. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Sherwin Hayes Leff practiced law?
Sherwin Hayes Leff has 59+ years of legal experience and has been licensed since 1967.
Where did Sherwin Hayes Leff go to law school?
Sherwin Hayes Leff earned their education at (J.D., 1967); (B.S., 1962).
How can I contact Sherwin Hayes Leff for a consultation?
You can contact Sherwin Hayes Leff 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 Sherwin Hayes Leff received?
Sherwin Hayes Leff's notable recognition includes: AV Preeminent.

Education

J.D.
John Marshall Law School
- 1967
B.S.
University of Wisconsin-Madison
- 1962

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1967

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