I would like to share a portion of an email that I received and according to the way it is worded I still think that it is the banks that do this by choice and not because of any law that requires them to do it
This is in response to your email inquiry asking if a Financial Institutions can put back into circulation a $1000 bank note that was received from a previous deposit.
Financial institutions are no longer able to obtain the $1000 note from the Bank of Canada. This withdrawal process is carried out entirely through the financial institutions.
This decision was recommended by the Department of Finance in consultation with the Bank of Canada, the federal Solicitor General, the Royal Canadian Mounted Police, and other Canadian law enforcement agencies.
The $1000 notes that are still in circulation can be redeemed (that is, exchanged or deposited) at Canadian financial institutions. These notes remain legal tender and retain their full face value, as do all Bank of Canada notes that are no longer issued, such as one- and two-dollar notes.
I hope this information is helpful and thank you for your interest in Canadian currency.
Regards,
Carol Ann Levett
Client Service Representative
Bank Note Communication Team
Bank of Canada
1-888-513-8212