There are no restrictions on the amount of money you can bring into or take out of Canada, nor is it illegal to do so. However, any time you cross the border, you must declare any currency or monetary instruments you have in your possession that are valued at CAN$10,000 or more.
How much can I declare at Canada Customs?
You can claim goods worth up to CAN$800. You must have tobacco products and alcoholic beverages in your possession when you enter Canada, but other goods may follow you by other means (such as courier or by post). However, all of the goods you are bringing back must be reported to the CBSA when you arrive.
Is $10000 cash limit per person or family?
Please note that the $10,000 limit is not per person. If you are traveling with family members and the total amount of money between you and your family members is more than $10,000, it must be reported to customs.
What happens when you declare over $10000?
If you are caught crossing the border with any amount of undeclared cash in excess of $10,000 USD you will almost certainly have it seized from you. There are other penalties associated with carrying too much cash across the border, as well.