1. What is "misrepresentation"?
There is no requirement that the person providing the information intended to deceive the CRA ... . ... [T]he information simply has to be incorrect at the time it is supplied to the CRA.
2. May only related issues be reassessed?
S. 152(4.01) makes it clear that, barring a waiver, CRA can "only reassess ... issues issues arising from a misrepresentation."
3. Would a tax avoidance arrangement generally be considered a misrepresentation?
There is no [such] general presumption... .
[A]lthough statute-barred years were assessed in project files like "Ontario Fincos", "Quebec Truffles" [sic, Shuffles?] and "Broken Amalgamations", in general the reassessment of statute-barred years where GAAR is the assessing authority should be rare. The GAAR Committee ... will not authorize an assessment of an otherwise statute-barred year unless there are compelling reasons provided which meet the negligence threshold.