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Ladonna Trapp Kienitz

Tax Attorney at Tustin, CA

5.0   14 reviews
  • Licensed for 24 years
    State CA
    Acquired 1999
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Ladonna

Learn Ladonna’s areas of practice.

Practice area
  1. Tax
    Tax controversies and tax disputes. With Internal Revenue Service, California Franchise Tax Board, California Board of Equalization, California Employment Development Department. Representation in the United States Tax Court

    18 years

It is wonderful to help clients overcome the great handicap of historic tax liabilities and liens on their credit records.  It is so satisfying to see them get a fresh start without the old problems hindering them from going forward.

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The Law Offices of LaDonna T. Kienitz
17581 Irvine Blvd Ste 111
Tustin, CA, 92780


5.0 / 5.0
  14 customer reviews
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1 Star
Posted by anonymous | September 15, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Exceptional Attorney
LaDonna Kienitz is an exceptional attorney! She put me at ease at our first meeting, and she plotted several coursesCanduy of action. It was necessary that we accomplish several things, over several years. Each step LaDonna suggested and helped me with was successful! Her expertise was invaluable. I highly recommend LaDonna Kienitz!
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Posted by Wendy | September 1, 2015
This review is from a person who hired this attorney.
| Hired Attorney
LaDonna goes beyond the call of duty. She is an excellent attorney. Highly recommended!!
When presented with the task of finding an attorney, it can be extremely overwhelming and intimidating. To compound matters, my circumstances have been extremely unusual, complicated and convoluted. I am so grateful to have found LaDonna Kienitz. She has been a godsend. Despite the complicated nature of my case, LaDonna took on my case without flinching. Her experience, competence, and calm demeanor instilled in me a great sense of security and confidence. She is also extremely compassionate, and takes a sincere personal interest. I met LaDonna through the Chapman Law Clinic. I had been newly separated after a long-term marriage that ended badly. As a result, I was destitute. I had no knowledge regarding my finances or taxes. My situation was dire. With LaDonna’s help, I was granted Innocent Spouse Relief. However, that was just the beginning. Since then, my case has had many twists and turns (issues of fraud, double filing, tax liens, outstanding tax bills etc…). LaDonna has been my great counsel and advocate. It has been an ongoing journey. Yet, LaDonna has not relented. She continues to exhaust all options on my behalf. I am so grateful for her tenacity and perseverance. Despite the many unusual road blocks and challenges, LaDonna has never given up on representing my best interests. I am extremely grateful for her expertise, counsel and support. I highly recommend her. She is an excellent attorney: with experience, integrity, and sincerity.
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Posted by JOANNE | July 24, 2015
Posted by diana | July 24, 2015
LaDonna Kieniitz
LaDonna Kienitz acted for me in attempting to solve my late brother's financial difficulties with the IRS and the California Franchise Tax Board. She tried to get both agencies to lessen my brother's indebtedness as he had not been mentally or physically competent to take care of his financial problems. Though unsuccessful, she tried very hard and covered all the bases. She always kept me informed as to what was going on. She was always available either by phone or in person and did the best she or anyone could do. I needed her help and support at a trying time and found her advice helpful.
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Posted by Joanne | July 23, 2015
Wonderful Experience
Ladonna Kienitz worked diligently with me to present an Offer in Compromise to the IRS and California State Franchise Tax Board. Ladonna was professional, honest, and informed about the procedure and likelihood of negotiating a settlement prior to my signing an agreement for her to represent me, and prior to my paying for her services. I highly recommend Ladonna to anyone who needs legal assistance dealing with tax related issues.
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Posted by Joan | July 23, 2015
Smart, professional and with a heart
How often do you find that combination?After a lifetime of hard work and planning, my husband and I found ourselves in debt to the taxing agencies in staggering amounts. We had no idea what to do. A friend recommended Ladonna Kienitz. We met her and were reassured that we were in professional hands but not only that, here was someone who cared. She wanted to achieve a good outcome for us. And she did. A combination of good communication skills and firm knowledge of tax law and process led to complete success. During the whole time, Ladonna was available, helpful and reassuring. My husband and I are once again in good standing with the taxing agencies and can get on with our future. Thanks, Ladonna for your expertise and help.
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Posted by Anabelle A. | July 15, 2015
IRS Tax Resolution
I was referred to LaDonna by the Legal Aid as my case too complicated for their workload. I met with her discussed my case which had been going on for almost a decade with no end in sight and she advised me on how it could be solved. She submitted all the paperwork to the IRS on my behalf and kept me informed of any new development in my case. We eventually got my offer in compromise approved and now my case is closed. I could have not done it without LaDonna's help and expertise in this area of law. I am finally able to sleep knowing I got a fresh start.
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Posted by anonymous | April 19, 2015
Ladonna Kienitz was recommended to me as the best in her field, and I quickly concurred with that estimation of both her and her work. Ms Kienitz was thorough and superb in her legal work, and she was kind and encouraging to me. She thoroughly explained several legal routes that were open to me, explaining the possibilities and ramifications of each. She achieved for me a fair and nearly impossible outcome in my situation with the IRS and with the CA tax board.
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Posted by Jacque and Scott | April 4, 2015
Hands On Tax Attorney - 100% Professional
We found Ladonna through an online referral service recommended by our CPA. From the time of our consultation to the conclusion of our tax case, she was 100% professional and hands on in every aspect. She informed us from the start there would be periods of waiting on IRS decisions followed with "get it done, now" submission of documents (lots and lots of documents). Ladonna always confirmed our after hour delivery of documents to her office and she, not an assistant, managed the entire case. Equally, she is aware tax problems can be stressful so her calm nature and knowledge of current IRS laws eased our anxiety. We told our CPA about our experience with her and he’s given her contact information to other clients of his. In the end, our OIC was accepted and Ladonna sent us a refund from over payment of billable hours!
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Posted by dan | March 4, 2015
Great service
I contacted Ladonna from a referral I received from a case worker at the LB VA medical center. My cases dealt with prior years federal income taxes I owed to the IRS. Based on my current income there was no way possible I could pay off the tax amount. Ladonna went to work for me and prepared and file an OIC with the IRS which was accepted by the IRS. I was sure the IRS would say however Ladonna was always positive and well inform with the IRS process. Now, I am debt free to the IRS.
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Posted by Jose | March 3, 2015
Excellence in legal services
Professor Kienitz provided services of the highest quality ,displaying expertise and academic knowledge that make her the kind of professional anybody can rely on. My personal case involved an immense amount of work and skill with tax related matters. The,intelligence,wisdom and hard work of Professor Kienitz brought relief and resolution to all my legal needs. If you need an honest ,reputable advocate,someone you can trust ,you will be glad she is handling all your legal needs.
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Posted by Patricia | February 26, 2015
One of the good ones!
LaDonna was very professional easy to talk to and had a total understanding of our problems. She got back to us right away and took care of our problems in a timely manner.
Posted by Rosa | February 25, 2015
Super Lawyer
Mere words cannot express how grateful I am for LaDonna's guidance throughout my case. She has gone above and beyond for me. Her expertise made my difficult situation bearable. She was professional throughout and I ultimately won my case.
Posted by Kathryn | February 25, 2015
Attorney Kienitz helps in IRS Settlement
After several years of trying to settle what I believed to be an Innocent Spouse case after the death of my husband I retained Ms. Kienitz to represent me with the Internal Revenue Service. She successfully ended the case with an Offer in Compromise that I felt was fair in my situation. I appreciated her keeping me informed on a regular basis.
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AVVO RATING 7.7 (Very Good)

Work Experience

  • Adjunct Professor
  • Fowler School of Law at Chapman University
  • 2007 - Present
  • Tax Attorney
  • Law Offices of LaDonna T. Kienitz
  • 2004 - Present
  • Community Services Director/City Librarian
  • City of Newport Beach, California
  • 1986 - 2002


  • Dominican University
  • MLS
  • 1970
  • University of San Diego
  • LL.M - Master of Laws
  • N/A
  • Western State University
  • JD - Juris Doctor
  • N/A
  • Northwestern University, Kellogg Graduate School of Management
  • Business Administration
  • N/A
View all education

Legal Cases

  • IRS Offer in Compromise
  • Total tax liabilities $98,000. Total payments made $4200.
  • K. ... v. Commissioner
  • DEcision - Balance due of $769
  • E... v. Commissioner.
  • No liability; and refund of $4550 to client


  • Women in Leadership
  • Board Member
  • 2006 - Present
  • William P. Gray Legion Lex Inn of Court
  • Member
  • 2005 - Present
  • Chapman University - School of Law
  • Visiting Assistant Clinical Professor Tax Law Clinic (full time)
  • 2009 - 2012
  • American Library Association
  • President, Public Library Association
  • 1994 - 1995
View all associations

Languages Spoken

  • English

Honors and Awards

  • Listed in annual publication
  • Who's Who In American Law
  • 2005
  • Listed annaully
  • Wh's Who in Ameria
  • 1990


Speaking Engagements

  • Fowler School of Law
  • Submitting sucessful Offers in Compromise to the IrS
  • 2015
  • Class lecture
  • Reresenting clients before the IrS
  • 2015
  • Fowler School of Law Chapman University
  • Tax litigation
  • 2014

Attorney endorsements

Received (2)
Given (0)
Endorse Ladonna
Tax Attorney | Jul 28
Relationship: Worked for lawyer
"I enthusiastically endorse this lawyer. I have known her for over 5 years. LaDonna works hard for her clients and is well respected in the legal community. She is professional, amicable, and knowledgeable."
Tax Attorney | Feb 24
Relationship: Worked together on matter
"I have worked with Ms. Kienitz on various tax matters for over 10 years. She is competent, timely and professional. I highly endorse this lawyer."
This attorney hasn't created any attorney endorsements recently on Avvo.