if u carry more than 10000 CAD in cash, u
must inform the CBSA officer, otherwise if they find out later, u might/ will be in trouble.
I've seen a story, where the man didn't disclose his funds at the POE, later when he went to deposit a handsome amount of money in the bank, the bank refuses to take money and asked him about the source of the money, as the bank did not see having that much money brought by the man at the POE.
another thing is, they advice immigrants to take as much money as possible and the money is COMPLETELY TAX free!!
8)