
THE DUE DILIGENCE DEFENCE & DIRECTORS’ LIABILITY
PROVING DUE DILIGENCE TO AVOID DIRECTORS’ GST/HST LIABILITY NO EASY FEAT!
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The GST/HST framework under the Excise Tax Act (“ETA”), as with other indirect tax regimes (like federal and provincial alcohol, tobacco and vaping taxes) includes “directors’ liability” provisions that are triggered when the corporation does not have the money to pay an assessed amount. Most of these systems have “due diligence defences” and “statutory limitation rules” which may limit a director’s liability, but these rules are tricky to apply in practice.
We review these rules in a two-part series, with reference to the recent case Stevens v. The King, 2026 TCC 76 (“Stevens”), which revolves around this directors’ liability framework.


