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.

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.


Tabatha Clayburn
Office Manager









JohnJohn Boselli
Tax Resolution Associate  joined Advanced Tax Solutions in 2009. He serves as an assistant to the CPA’s and works on Tax Preparation & IRS Resolution Services. John has a Bachelor’s Degree in Liberal Arts from Bucknell University and a Master’ Degree in Business from Syracuse University. John is an avid fly-fisherman so you may see him on one of the many rivers he fishes in Colorado, Yellowstone Park, Montana, & Idaho.



Aleksandr Petrosyan
Enrolled Agent and Certified Tax Resolution Specialist









CharlesCharles Forsyth
Enrolled Agent graduated from Colorado State University with a Bachelors in Accountancy. He is an Enrolled Agent, and is admitted to practice before the IRS. He enjoys all aspects of accounting, but tax is his favorite. Charles joined Advanced Tax Solutions to be able to help out individuals and businesses with IRS resolution. When not at the office, he enjoys the great Colorado outdoors and spending time with friends and family.





SallySally Shafer
Enrolled Agent









ZanaZana Darwish
Tax Resolution Associate









TylerTyler Thorne
Tax Resolution Associate









TeresaTeresa Petroski
Tax Resolution Associate