About the Author
Kreig D. Mitchell, LLM, JD

Kreig Mitchell has spent his entire career inside the world of IRS audits — first as the person running them, then as the person defending against them.
He began as an IRS estate and gift tax attorney, conducting estate tax audits of some of the largest and most complex estates in the country. He then transferred to the IRS Office of Appeals, where he worked and settled every type of tax matter — from individual disputes to large-business adjustments — sitting on the other side of the table from taxpayers and their representatives.
After leaving the IRS, he served as Tax Director at two Fortune 500 companies — Starwood Hotels & Resorts and Newmont Mining — where he handled tax controversy for the largest and most complex audit issues, dealing with IRS examination teams and state revenue authorities on a regular basis. He also spent time as a Senior Tax Manager at KPMG LLP.
For the past 10+ years, Mr. Mitchell has run his own tax practice at Mitchell Tax Law, where he focuses on complex audits — including research tax credit audits, cost segregation audits, and medium and large business examinations — plus IRS Appeals and U.S. Tax Court litigation. He is licensed as an attorney in Texas and Colorado.
Credentials & Admissions
Bar Admissions
- Texas, Attorney
- Colorado, Attorney
- U.S. Tax Court
Education
- LLM, Tax Law — University of Houston
- JD — Texas Tech University
- MS, Financial Planning & Finance — Texas Tech University
- MS, Criminal Justice — Sul Ross State University
- BS, Pre-Law — University of Texas (UTPB)
Books
- Win Your IRS Audit: A Step-by-Step Guide (Kindle 2021; Second Edition forthcoming)
- Research Tax Credits (ALI-ABA 2011)
- The California Research Tax Credit (Kindle 2011)
Selected Articles
- What Happens During an IRS Audit? A Step-by-Step Walkthrough
- What Triggers an IRS Audit? 10 Common Reasons Returns Get Picked
- How to Respond to an IRS Audit Letter (The Right Way)
- IRS Notice of Deficiency (90-Day Letter): What It Means and How to Respond
- IRS Audit Timeline: How Long Does an IRS Audit Take?
- IRS Audit Penalties: What They Are and How to Fight Them
- Tax Court vs. Paying and Filing for Refund: Choosing the Right Forum
- The 3 Types of IRS Audits Explained
- How to Appeal an IRS Audit: The 30-Day Letter and Beyond
- IRS Collections Process: From Audit Adjustment to Levy
- IRS Notice CP2000: What It Means and How to Respond
- IRS Statute of Limitations on Audits: 3-Year, 6-Year, and Forever Rules
For the full list of publications, speaking engagements, and representative matters, see Mr. Mitchell’s bio at Mitchell Tax Law.
Working With Mr. Mitchell
For representation in an IRS audit, Appeals matter, or Tax Court case, contact Mitchell Tax Law for an engagement.