About US

Meet The Owner

Oksana Jess is the president and owner of Advanced Tax Service, LLC who has offices in both the Aurora and Castle Rock areas. Mrs. Jess has a Master’s Degree in Economics and over 20 years of experience in international and national accounting for small to medium size businesses in virtually every category. She is also a renowned Certified IRS Tax Preparer and is a proud member of both the Public Accountants Society of Colorado and National Society off Accountants. As a Registered Tax Preparer (RTRP) who is in the final stages of achieving her Enrolled Agent (EA) status, Mrs. Jess provides her clients with judicious and insightful services which are always in their best interest while remaining in accord with the ever-changing local and national regulations.