Atty. Catherine A. Tanck

Atty. Catherine A. Tanck

Catherine A. Tanck is a lawyer practicing tax planning, tax appeals, state tax controversies and 4 other areas of law.

Sioux Falls Sioux Falls 39 yrs experience 39 year
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Profile Summary

About Catherine A. Tanck at a glance

Catherine A. Tanck is a Partner based in Sioux Falls, South Dakota, practicing at Davenport, Evans, Hurwitz & Smith, LLP. They have 39+ years of legal experience, licensed to practice since 1987. Their practice focuses on irs, family law, business, tax, and tax litigation. Admitted to practice in South Dakota (1987), U.S. Court of Appeals, Eighth Circuit (1988), and U.S. Tax Court (1989). Educated at University of South Dakota (J.D. Sterling, 1987) and Augustana College (B.A. Accounting, 1979). Recognitions include AV Preeminent. Active member of American Bar Associations. Serands clients in Sioux Falls, SD and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Catherine A. Tanck is a lawyer practicing tax planning, tax appeals, state tax controversies and 4 other areas of law
  • Catherine A. received a B.A. degree from Augustana College in 1979, and has been licensed for 39 years
  • Catherine A. practices at Davenport, Evans, Hurwitz & Smith, LLP in Sioux Falls, SD

Practice Areas Explained

Catherine A. Tanck's Areas of Practice

Each practice area below reflects the types of cases Catherine A. Tanck handles, with a brief overview of what that area of law covers.

IRS Disputes & Audits

Catherine A. Tanck is one of 2,917 irs attorneys indexed nationally. Browse irs attorneys in South Dakota →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Catherine A. Tanck is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in South Dakota →

Business & Corporate Law

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

Catherine A. Tanck is one of 501,317 business attorneys indexed nationally. Browse business attorneys in South Dakota →

Tax Law

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

Catherine A. Tanck is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in South Dakota →

Tax Litigation

Catherine A. Tanck is one of 3,110 tax litigation attorneys indexed nationally. Browse tax litigation attorneys in South Dakota →

Jurisdictional Context

Why local counsel matters in South Dakota

Practicing law in South Dakota. Legal matters in South Dakota are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Sioux Falls are typically filed in the local municipal court or the appropriate South Dakota state district court, depending on subject matter and amount in controversy. An attorney licensed in South Dakota 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 South Dakota courts without local counsel or pro hac vice admission.

Looking for additional South Dakota attorneys? Browse all attorneys in Sioux Falls or all attorneys in South Dakota.

Frequently Asked

Common questions about Catherine A. Tanck

Where is Catherine A. Tanck's law office located?
Catherine A. Tanck's law practice is located in Sioux Falls, South Dakota. The firm is Davenport, Evans, Hurwitz & Smith, LLP. You can contact the office directly through this profile page.
What practice areas does Catherine A. Tanck handle?
Catherine A. Tanck focuses on irs, family law, business, tax, tax litigation. Each practice area listed reflects experience handling cases of that type in South Dakota.
How long has Catherine A. Tanck practiced law?
Catherine A. Tanck has 39+ years of legal experience and has been licensed since 1987.
Where did Catherine A. Tanck go to law school?
Catherine A. Tanck earned their education at (J.D. Sterling, 1987); (B.A. Accounting, 1979).
How can I contact Catherine A. Tanck for a consultation?
You can contact Catherine A. Tanck 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 Catherine A. Tanck received?
Catherine A. Tanck's notable recognition includes: AV Preeminent.

Education

J.D. Sterling
University of South Dakota
- 1987
B.A. Accounting
Augustana College
- 1979

Awards

AV Preeminent

Bar Admissions

South Dakota
Admitted: 1987
U.S. Court of Appeals, Eighth Circuit
Admitted: 1988
U.S. Tax Court
Admitted: 1989

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