Contact us and give us details about the donation you made. If the donation was eligible for a tax receipt, we can issue a replacement receipt. Please note that a replacement tax receipt cancels the receipt number of the one it’s replacing, so if the old receipt is located, it will no longer be valid for income tax purposes. We don’t issue duplicate receipts (i.e. receipts that have the same tax receipt number as a previous receipt). If you made your donation online via CanadaHelps, you can request a new receipt on CanadaHelps.org.