William A. Peithmann - The Peithmann Law Office

William A. Peithmann

Listed in Best Lawyers since 1999

Firm Background:

    The Peithmann Law Office was founded in Farmer City in 1948 by Ortheldo A. Peithmann and his CPA wife, Winona C. Peithmann, as a general practice law firm with a tilt toward municipal law, farm estate planning and tax matters. Bill Peithmann joined the firm in 1985 after a stint as international corporate counsel in California.  In May, 2012, the firm re-located 15 miles east to Mahomet, Illinois, where Bill and his wife Lisa have lived since 2006.

Durable, Capable, Reliable:

    Over time the firm has narrowed its practice to providing customized tax, estate planning, wealth management and related services to select clients throughout Illinois and Colorado. The Peithmann Law Office is dedicated to providing only the highest quality legal services, equivalent or superior to that provided by larger firms in more urban venues, and proudly stands behind its work.  As a result The Peithmann Law Office is regularly cited by its peers as among the very best in Illinois. 

    Since 2011 the firm has been included in the "U.S. News and World Report America’s Best Law Firms"® with a Tier 1 metropolitan ranking for Trusts and Estates law.

  Limited Practice:

    The Peithmann Law Office limits its practice to select matters involving wealth management and preservation; asset protection; basic, intermediate and advanced estate planning; trust and estate administration; fiduciary support; charitable organizations; contested estates; elder law; closely-held businesses (especially, family farm operations); business succession planning; commercial and farm real estate; and gift, estate and income taxation of all types.  This limited practice may include any one or combination of the following planning, support or legal services: 

* Closely and privately held businesses – especially, family farm operations

* Creative ownership methods and organizations

* Customized estate and business succession planning, including appropriate asset protection  and tax avoidance techniques, valuation discount strategies, and tailored multi-generation transfer and administrative provisions

* Wills, and trusts of almost every kind

* Powers of appointment

* Special needs, "elder law", guardianships and medicaid planning

* Probate and post-mortem estate planning

* Disclaimers

* Trust and estate administration

* Contested estates

* Fiduciary accounting, tax and administrative support for non-professional family trustees

* Residential, commercial and farm real estate matters of all types

* Gift, estate, generation-skipping and income tax planning, compliance and audits

* Qualified expert case analysis on applicable law, methods and practice

* Retained to assist local counsel in all four Illinois downstate appellate districts 

   The Peithmann Law Office is very selective in the new clients and referrals it accepts.


    All Illinois law firms are required to charge "reasonable fees", and The Peithmann Law Office is no exception.  While certainly not a low cost provider we believe our fees are very competitive with other firms of similar experience and abilities providing similar legal services, and are substantially less than the fees charged by equivalent firms in Chicago or its collar counties.

     All fees are established by prior agreement on terms intended to be commensurate with the value of the work performed and the results attained for the benefit of the client.

Farms and Farming:

    Bill Peithmann is a member of the DeWitt County and Piatt County Farm Bureaus and a Commissioner of the Clintonia Union drainage district.  He actively manages several small Central Illinois farm operations and also acts as trustee or trustee's agent on behalf of several charitable and non-charitable beneficiaries.  

    More than half of the firm's clients are engaged, directly or indirectly, in farming.

Speaking and Writing:

    Bill Peithmann is also a frequent contributor to legal publications on estate planning matters and lecturer at various tax and estate planning institutes for the American Bar Association, the Illinois Institute for Continuing Legal Education, the Illinois State Bar Association, the Colorado Bar Association, the University of Illinois College of Law, and other professional organizations, on such topics as basic and advanced estate planning and administration, qualified disclaimers, applied valuation discount theory, powers of appointment, advising and protecting fiduciaries, the practical use of revocable and irrevocable trusts, and the various features of the generation skipping transfer tax scheme.  He has also provided expert testimony before the civil judiciary panels of the Illinois Senate and the Illinois General Assembly.

Loretto Heights College (Now, Regis University)University of Denver Sturm College of LawJ.D. 1978
Mahomet Area Youth Club (MAYC)American Bar AssociationIllinois Bar FoundationAmerican College of Trust and Estate Counsel (ACTEC)Illinois State Bar Association

Case History

Iran - United States Claims Tribunal (1981 - 1983)

Attorney, International Exploration and Production Division, Getty Oil Company (Los Angeles; 1980 - 1983).

As a very young lawyer with an interest in international law I had the rare opportunity to represent Getty Oil (in consortium with other major and mid-major oil companies) in landmark international arbitration proceedings following the 1981 "Algiers Accords" that resolved the Iran hostage crisis and other issues between the United States and the Islamic Republic of Iran.

Office Location

409 East Main Street
P.O. Box 80
Mahomet, IL 61853
United States

Lawyer of the Year Awards

2016 Lawyer of the Year in Trusts and Estates of the Springfield-IL Metro Area2013 Lawyer of the Year in Trusts and Estates of the Springfield-IL Metro Area
William A. Peithmann has earned a Lawyer of the Year award for 2016!William A. Peithmann has earned a Lawyer of the Year award for 2013!

Practice Areas

Tax Law (Agribusiness, Business and Succession Planning, Fiduciary Tax, Finance, Nonprofit Organizations and Charitable Giving, Trusts and Estates, Wealth Management)
Trusts and Estates (Asset Protection, Estate Planning, Tax, Wealth Management)

Other Information

Gender: Male