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I am a Tax Attorney who works with clients across Colorado. I specialize in reducing and resolving tax liabilities with Internal Revenue Service and Colorado. I also prepare back and current tax returns for individuals and businesses and defend clients in IRS examinations and audits. I received my law degree from the University of Colorado in 2000 and have been in private practice for 15 years.
My goal is always to find a permanent solution to your tax problem. I always strive to achieve the best possible results in the shortest amount of time and at the lowest cost. I always try to treat my clients like friends and family.
I was born and raised in Colorado and completed my undergraduate studies at Colorado State University in 1996. I graduated with honors and then attended the University of Colorado School of Law in Boulder, Colorado where I received my Juris Doctorate in 1999. I passed the Colorado Bar Exam in 2000 and have been practicing law ever since.
I currently reside in Boulder, CO. My family and I enjoy all of the outdoor activities that Colorado has to offer, including camping, hiking, biking, skiing, snowboarding and running.
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Practice Areas
25 years | 625 cases
25 years | 15 cases
25 years | 10 cases
25 years | 20 cases
Free Consultation
$0 first 60 minutes
State: Colorado
Acquired: 2000
No misconduct found
Fax
6525 Gunpark Dr, Ste 370 #122, Boulder, CO, 80301
cotaxattorney.com/
Other places you can find John online.
24 Client Reviews
Showing 1 - 5 of 7 reviews | Debt Settlement
Posted by Mark | May 28, 2021 | Hired Attorney | Debt Settlement
If you are in need an OIC, John Claudell is your man!
I had been trapped in an IRS "maze" for years. With P&I constantly increasing, my debt had grown from an initial $15-20K to up over $75K. I finally began researching attorneys who might be able to assist in getting me out of this painful cycle. John's reviews almost seemed too good to be true but in ...
Posted by Daren | March 16, 2019 | Hired Attorney | Debt Settlement
IRS offer and compromise
John was really easy to work with, was very quick to respond to questions and reduced my IRS taxes owed by $190,000. I would highly recommend him to anyone with a tax debt owed to the IRS that you are wanting to try and get reduced.
Posted by Michael | February 26, 2019 | Hired Attorney | Debt Settlement
I Had Lost Hope. John Claudell Freed Me.
After years of a failing marriage and over $250,000 of tax debt, I found myself divorced and solely responsible for this debt. Working with John for the past 5 years, he has guided me through negotiations with the IRS and State of CO, helped me with achievable payment plans, and he gave me the confid...
Posted by Darin | December 30, 2015 | Hired Attorney | Debt Settlement
Great attorney if dealing with IRS and back tax issues
John was amazing in helping us resolve our issues with the IRS. He was professional, knowledgeable, compassionate and treated my wife and I with respect. His price was more than reasonable and he was successful in obtaining a settlement with the IRS that we could manage. His expertise in dealing with...
Posted by tim | August 21, 2015 | Hired Attorney | Debt Settlement
my tax problem
i had been through a divorce had back taxes I was unaware of .john told me what he could do he did not give me any unreasonable expectations. I owed appx 50,000 john got it settled for 800 dollars . better than any of the high dollar adds on the radio and tv I have and will recommend john claudell ...
Tax fraud and tax evasion lawyer | Aug 26
Relationship: Fellow lawyer in community
"Mr. Claudell is an exceptional attorney. I have been an attorney for 24 years and served as a judge, magistrate, prosecutor, law professor, and private attorney. However, even with all of that experience, I learn from his answers on Avvo each and every day. If you have the chance, hire him in an instant."
Bankruptcy and debt lawyer
Real estate lawyer
Bankruptcy and debt lawyer
Bankruptcy and debt lawyer
2012 - Present
Senior Attorney, John D Claudell Esq PC
2004 - 2012
Senior Attorney, Colonial Tax Consultants
2003 - 2004
Senior Associate, Omni Financial
2015 - Present
National Bar AssociationMember
2004 - Present
Colorado Bar AssociationMember
1999
Juris Docor
1996
Bachelor of Arts
N/A
English
Legal Answers
Legal Guides
How do I fill out my W-4 so that the max amount of taxes is being taken out?
18 Apr 2026
Is settlement money for wrongful termination taxable?
02 Apr 2026
A family member owes over $400,000 to irs. They own a 6th of a family home and land I live on.
08 Dec 2025