Advice
(2) Advice defined. Advice is any communication, including the opinion of a professional tax advisor, setting forth the analysis or conclusion of a person, other than the taxpayer, provided to (or for the benefit of) the taxpayer and on which the taxpayer relies, directly or indirectly, with respect to the imposition of the section 6662 accuracy-related penalty. Advice does not have to be in any particular form. (3) Cross-reference. For rules applicable to advisors, see e.g., 1.6694-1 through 1.6694-3 (regarding preparer penalties), 31 CFR 10.22 (regarding diligence as to accuracy), 31 CFR 10.33 (regarding tax shelter opinions), and 31 CFR 10.34 (regarding standards for advising with respect to tax return positions and for preparing or signing returns).