Atty. John A. Sikora
John Sikora is a Shareholder representing clients in tax planning, tax controversies and the buying and selling of businesses and real estate with a particular focus on corporate, partnership and other business matters. John is an adjunct professor of law at Marquette University Law School, where he has taught the tax practice and procedure and corporate income tax courses.
Profile Summary
About John A. Sikora at a glance
John A. Sikora is a business and tax attorney based in Milwaukee, Wisconsin, practicing at von Briesen & Roper SC. Admitted to practice in Wisconsin, State Bar of Wisconsin. Educated at University of Wisconsin–Madison (J.D.) and University of Wisconsin–Madison (B.B.A.). Recognitions include Best Lawyers in America — Corporate Law (2026), Best Lawyers in America — Tax Law (2026), and Best Lawyers in America — Special Focus: (2026). Serands clients in Milwaukee, WI and the surrounding metropolitan area.
Want to Get Service From This Attorney?
Sign up free and choose one of the two methods below.
Have a legal question? Sign up free, submit it through the Ask the Attorney module and receive a focused answer from a specialist.
- Free to ask a question
- Answers from specialist attorneys
- Optional private / anonymous question
Request an online video meeting or an in-person consultation at the attorney's office. Pick a time that works for you and share the details securely.
- Online video meeting
- In-person at the attorney's office
- Secure messaging and payment
About
- John Sikora is a Shareholder representing clients in tax planning, tax controversies and the buying and selling of businesses and real estate with a particular focus on corporate, partnership and other business matters
- John is an adjunct professor of law at Marquette University Law School, where he has taught the tax practice and procedure and corporate income tax courses
- John has also taught the taxation of partnerships and S corporations course to graduate accounting degree candidates at the University of Wisconsin-Milwaukee
- In addition he has served as the instructor for numerous continuing education programs, including courses offered by the State Bar of Wisconsin and the Wisconsin Institute of Certified Public Accountants (WICPA)
- John has served as the chair of the Taxation Section of the Milwaukee Bar Association, was the chair of the Board of Directors of the State Bar of Wisconsin Taxation Section, and the editor of the Wisconsin State Bar Tax News
Practice Areas Explained
John A. Sikora's Areas of Practice
Each practice area below reflects the types of cases John A. Sikora handles, with a brief overview of what that area of law covers.
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
John A. Sikora is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Wisconsin →
Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.
John A. Sikora is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Wisconsin →
Jurisdictional Context
Why local counsel matters in Wisconsin
Practicing law in Wisconsin. Legal matters in Wisconsin are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Milwaukee are typically filed in the local municipal court or the appropriate Wisconsin state district court, depending on subject matter and amount in controversy. An attorney licensed in Wisconsin 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 Wisconsin courts without local counsel or pro hac vice admission.
Looking for additional Wisconsin attorneys? Browse all attorneys in Milwaukee or all attorneys in Wisconsin.
Frequently Asked
Common questions about John A. Sikora
Where is John A. Sikora's law office located?
What practice areas does John A. Sikora handle?
Where did John A. Sikora go to law school?
How can I contact John A. Sikora for a consultation?
What awards or recognition has John A. Sikora received?
Practice Areas
Education
Awards
Bar Admissions
Reviews
No reviews yet.