One spouse should claim all the family charitable donations for Canadian Income Tax purposes to maximize the overall income tax credits available. You can also carry charitable donations forward since the donation credit is available for donations made within the five preceding years.
"This article provides information of a general nature only. It is only current at the posting date. It is not updated and it may no longer be current. It does not provide legal advice nor can it or should it be relied upon. All tax situations are specific to their facts and will differ from the situations in the articles. If you have specific legal questions you should consult a lawyer."