According to the financial company, several tax credits have or will soon expire, which means hundreds of thousands of Canadians risk throwing money away. Here are the tax benefits and credits that have expired, or are expiring soon, that you can still claim. It says charitable donations are one of the most commonly missed tax credits in Canada, so Canadians should make sure they have all of their donation receipts ready for tax season. The tax credit is 15 per cent of your costs, up to a maximum of $7,500, for each eligible claim. The HATC non-refundable tax credit is for eligible home renovation or alteration expenses, with an annual expense limit of $20,000.