Frank Rim – (License Number: CPA.0021632)
President of Advanced Tax Solutions CPA, PC, is a Certified Public Accountant and Certified Tax Resolution Specialist. Frank joined Advanced Tax Solutions in 2001. Frank’s prior experience includes working as a professional with an international Big Six public accounting firm assisting corporations with tax compliance and consulting needs. Frank is a member of the American Society of Certified Public Accountants as well as the American Society of IRS Problem Solvers. Frank enjoys working with the businesses and individuals that Advanced Tax Solutions serves… helping those who are in difficult situations with the IRS get back on track and stay on track. He has worked exclusively for over a decade helping clients resolve their tax problems with a variety of solutions including Offers in Compromise, Installment Agreements, Penalty Abatements, Appeals and assistance with the preparation of un-filed income tax returns. Frank is one of the firm’s owners and plays a key role in the management of the firm. He loves getting outside as much as possible with his wife Annie, and their two  daughters Beatrix and Eleanor.


Todd Whalen – (License Number: CPA.0012009)
Founder of Advanced Tax Solutions, Certified Public Accountant and Certified Tax Resolution Specialist
Did you know that there is a test that if you pass it you can sue the IRS?  You have to fly to Washington to take the test, but if you pass it, you can sue the IRS for abuse of power in collection cases.  But before you run out and buy that plane ticket consider that the test has been around since 1942 and only about 300 people have passed it since its inception.
On May 8, 2011, Todd became the 298th person to pass that test.
Todd is also a member of the National Association of Enrolled Agents (which allows him to practice before the IRS anywhere in the nation) and also of the National Association of IRS Problem Solvers.  He is an alumni of the prestigious international accounting firm of KPMG Peat Marwick.  He has a Masters of Taxation from DU.  His personal hobbies include backpacking fly-fishing and hunting.  In 1998 Todd took a sabbatical and backpacked the full length of the 2000 mile Appalachian Trail.


Dale Erickson – (License Number: CPA.0014380)
Certified Public Accountant and Certified Tax Resolution Specialist.  Dale graduated with a Bachelor’s degree in Accountancy from the University of North Dakota.  Dale continued his education at the University of Denver where he received a Master of Accountancy degree. Upon graduation, he joined Ernst & Young LLP an International Accounting Firm (one of the largest in the world). He completed a Second Master’s Degree in Finance from the University of Colorado. Dale completed a 3rd Master’s degree with a Master of Taxation from the University of Denver. Dale joined Advanced Tax Solutions in February 2002 and is our go to guy for tax preparation.  After we fix a tax problem, Dale is a great resource for the firm to answer the tough questions on ongoing Tax Preparation!  We appreciate Dale’s skills to be able to offer ongoing tax preparation and compliance!


Glenn Robbins – (License Number: CPA.0026504)
Certified Public Accountant and Certified Tax Resolution Specialist graduated from Regis University in 2005 with a Bachelor’s degree in Accounting. He joined Advanced Tax Solutions in 2005. He enjoys representing clients to resolve various tax issues such as unfiled tax returns, audits and penalty abatements, solving many tax problems for clients by setting up payment plans and Offers in Compromise.






Advancedtax15-0065Valerie Brown

Enrolled Agent and Certified Tax Resolution Specialist has been with Advanced Tax Solutions since 2004. She graduated from Metro State College of Denver. Valerie assists in creating the IRS Resolution Staff Manual along with the Financial Analysis Staff Manual and trains all of the administrative staff on IRS Resolution procedures. She also serves as an assistant to the CPA’s and works on IRS Resolution Services, Tax Preparation, Payroll Reports and monthly bookkeeping services that help client’s in resolving their cases. She has assisted in the company’s success by helping to create and implement systems to track important company statistics.



John Boselli joined Advanced Tax Solutions in 2009 and handles tax preparation for the firm. John has a Bachelor’s Degree in Liberal Arts from Bucknell University and a Masters in Business from Syracuse University.









Samantha Larson has been with Advanced Tax Solutions since 2005 and has happily been the voice on the phone and first face you see when you come in. You can bet that there is a good chance when you come in that Samantha will know who you are, before you introduce yourself. She is the cog that keeps the office running smoothly. Samantha has both a Bachelor and Master’s degree from Regis University and she assists with streamlined reports that enable the company to make informed business decisions.






Aleksandr Petrosyan

Enrolled Agent and Certified Tax Resolution Specialist









Advancedtax15-0035Zana Darwish