Can supply-managed farm quota be left to my children through my Ontario will?

Generally, yes — supply-managed quota is an asset the person holding it can address in their will, and it forms part of the estate like other property. But quota isn't quite like other estate assets: it's typically held under the rules of the relevant provincial marketing board, and those rules can affect who is eligible to hold quota going forward and what steps are needed to transfer it into a beneficiary's name.

That means a will can direct who is meant to receive the quota, but the actual transfer usually still has to go through the marketing board's own process, and the board's current eligibility and transfer requirements should be checked directly rather than assumed. It's also worth naming the quota specifically in estate planning discussions rather than folding it into a general "farm assets" description, since its value and transferability can move independently of the land it's used on. Anyone planning to leave quota to a child who isn't currently an active farm operator should raise that scenario with a lawyer early, since eligibility to hold quota is usually tied to actively farming, not just to inheriting it.