Atty. Mark E. Sims
Mark Sims practices in the business representation & transactions practice group and works primarily in the federal income tax, business planning and healthcare areas. Mark's federal tax practice involves individual, corporate, S corporation and partnership tax planning, including executive compensation and like kind exchanges.
Tax Law Attorney · Serving Cincinnati, OH
Profile Summary
About Mark E. Sims at a Glance
Mark E. Sims is a tax attorney based in Cincinnati, Ohio, practicing at Keating Muething & Klekamp PLL. Admitted to practice in Ohio, Ohio State Bar Association and Florida, The Florida Bar. Educated at University of Florida (—, 1981) and University of Florida (LL.M Taxation, 1981). Recognitions include Best Lawyers in America — Tax Law (2026), Best Lawyers in America — Special Focus: (2026), and Best Lawyers in America — Corporate (2026). Serves clients in Cincinnati, OH and the surrounding metropolitan area.
Get Legal Help from Mark E. Sims in Cincinnati
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 Mark E. Sims
- Mark Sims practices in the business representation & transactions practice group and works primarily in the federal income tax, business planning and healthcare areas
- Mark's federal tax practice involves individual, corporate, S corporation and partnership tax planning, including executive compensation and like kind exchanges
- He advises clients regarding the tax aspects of mergers and acquisitions
- Mark also represents clients on matters before the IRS and state tax agencies
- Additionally, he has significant experience focusing on tax issues related to the formation and operation of tax exempt organizations
- Mark serves in a general counsel role for a number of closely held businesses and represents purchasers and sellers of businesses and business interests
- His healthcare practice concentrates on business and tax issues facing healthcare providers, including representing physician groups in structuring and selling medical practices
- Mark also has extensive experience drafting, reviewing and negotiating physician employment agreements
- Mark has been an adjunct professor at the University of Cincinnati College of Law and speaks frequently on tax and healthcare related issues
Practice Areas Explained
Mark E. Sims's Areas of Legal Practice
Each practice area below reflects the types of cases Mark E. Sims handles, with a practical overview of what that area of law involves and how it may apply to your situation in Cincinnati.
Tax Law in Cincinnati
Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.
Mark E. Sims is one of 84,606 tax attorneys indexed nationally. Browse tax attorneys in Ohio →
Jurisdictional Context
Why Local Counsel Matters in Cincinnati
Practicing law in Ohio. Legal matters in Ohio are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Cincinnati are typically filed in the local municipal court or the appropriate Ohio state district court, depending on subject matter and amount in controversy. An attorney licensed in Ohio brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Ohio courts without local counsel or pro hac vice admission.
Cincinnati Courts and Legal Process
Choosing a Cincinnati-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Ohio attorneys? Browse all attorneys in Cincinnati or all attorneys in Ohio.
Frequently Asked
Common Questions About Mark E. Sims
Where is Mark E. Sims's law office located?
What practice areas does Mark E. Sims handle?
Where did Mark E. Sims go to law school?
How can I contact Mark E. Sims for a consultation?
What awards or recognition has Mark E. Sims received?
Professional Profile
Why Clients in Cincinnati Choose Mark E. Sims
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark E. Sims's practice in the field of tax.
Multi-State Bar Admission
Licensed in Ohio, Ohio State Bar Association and Florida, The Florida Bar, Mark E. Sims can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Focused Tax Practice
Concentrating on tax means Mark E. Sims's knowledge of relevant statutes, case law, and procedural nuances stays current — unlike generalist practices that spread attention across unrelated fields.
Local Presence in Cincinnati
A Cincinnati-based practice means Mark E. Sims attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Mark E. Sims Handles in Cincinnati
Below is a representative sample of the types of matters Mark E. Sims has experience with under Ohio law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Mark E. Sims directly to discuss the specifics of your situation.
Search Reference
How People Find Mark E. Sims Online
Prospective clients searching for legal help in Cincinnati commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Mark E. Sims.
If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Mark E. Sims directly.
Mark E. Sims's Practice Areas & Specializations
Education & Law School Background
Awards & Professional Honors
Bar Admissions & Licensed Jurisdictions
Client Reviews & Ratings — Mark E. Sims
No reviews yet.