According to the official website, there is nothing proves that Wife's fund could be accepted as POF for the main applicant.
I also called the CIC three times (Just to get the options from different customer service agent), and all of them said:
If the account is Joint, and I can proof that main applicant has access to the fund, it will be accepted.
I asked one of them If i have a delegation on the account, could you accept that, she said if the bank can provide you a letter shouwing your delegation and proves full access of the fund, the officer might accept it.
According to CIC website, there is important part in the POF letter requirements which is "include your name".
So if you just send the wife's bank account, there is high probability it could be rejected.
Letter(s) must:
- be printed on the financial institution’s letterhead
- include their contact information (address, telephone number and email address)
- include your name
- list outstanding debts such as credit card debts and loans
- include, for each current bank and investment account:
- account numbers
- the date each account was opened
- the current balance of each account
- the average balance for the past six months