Donald L. Sadowski

Donald L. Sadowski brings over 30 years of experience providing trusted legal counsel to businesses, entrepreneurs, and individuals. His practice at Kelleher + Holland, LLC focuses on business law, estate planning, taxation, asset protection, and commercial transactions.

Throughout his career, Don has advised closely held businesses and individuals across industries such as technology, healthcare, construction, and retail. He assists clients with entity formation, mergers and acquisitions, executive compensation, and business succession planning. His estate planning work is equally comprehensive, helping families create wills, trusts, and sophisticated tax strategies designed to preserve wealth and secure peace of mind across generations.

In addition to private practice, Don has contributed to the field as a legal author, having worked for a nationally recognized publisher of taxation materials. In that role, he regularly wrote about federal court decisions, IRS rulings, and pending legislation related to federal estate and gift tax law—further enhancing his ability to guide clients through complex financial and legal landscapes.

Clients appreciate Don’s holistic approach, which integrates legal, business, financial, and tax considerations to provide strategic, long-term solutions tailored to their unique goals. His commitment to client success and his depth of knowledge make him a valued resource for those seeking practical, forward-thinking advice.

• DePaul University College of Law, Chicago, Illinois
  • J.D., LL.M. | 1984
    
• Loyola University, Chicago, Illinois
  • BBA | 1980
  • Major: Finance

• Illinois State Bar Association | Member
• Trusts and Estates and Elder Law | Member

• Expertise.com’s Best Probate Lawyers in Schaumburg | 2022