Shannon Christensen, JD, MBT is a Tax & Accounting Specialist Editor with Thomson Reuters Checkpoint. She holds a J.D. from Mitchell Hamline School of Law and a Master of Business Taxation from Carlson School of Management, University of Minnesota. Shannon has over 20 years of experience assisting taxpayers to solve complex tax issues including IRS and state audit defense, is admitted to practice law in Minnesota, and is a member of the Minnesota state bar association.

Trenda B. Hackett, CPA, is an executive editor of PPC products for the Tax & Accounting business of Thomson Reuters. Trenda has 30 years of experience in tax and accounting. Prior to joining Thomson Reuters, she spent over 15 years with the IRS as a Revenue Agent. She has significant experience in tax compliance and representing clients before the IRS as well as product development for the GoSystem Tax partnership product. In addition to coauthoring PPC’s Guide to Tax-Related Identity Theft, Trenda is a contributing editor to Checkpoint’s IRS Response Library, PPC's Guide to Dealing with the IRS, PPC’s Tax Planning Guide: Closely Held Corporations, and PPC's 1120 Deskbook.