Hey @bf1120 ,
Welcome to the Community!
The overage rate is different depending on each plan, and it's also subject to change.
The $40 4GB plan with province-wide calls overage is $5 per 100 mb .
I'd just like to clarify that this overage rate is specific to this plan, I wouldn't want some of you to think it applies to all the $40 plans .
Hope this helps!