This made me go "hmmm..." for two reasons:
1. My understanding is that under Canadian tax law, the value of any advantage to the donor must be subtracted from the value of the charitable receipt.
Unless the ordinary market value of the activity can be deemed to be of minimal value with respect to the gift amount, I'm not 100% sure that this organization should be issuing a receipt for the full contribution! I also question whether they should be providing tax information in a radio ad?
2. This is the third or fourth time in the past month that I've seen the wording "tax-deductible donation" used in fundraising marketing.
It's a fine hair to split, but for Canadian individuals, charitable donations trigger a "tax-creditable donation receipt." The difference may seem small, but it is important!
A tax credit means that regardless of your income, you will receive a standardized percentage of your gift back as a credit on your income tax return.
If it were a "charitable deduction," the rate of reimbursement would be tied to a tax-payers marginal rate for income tax, which in many cases, is lower than the marginal rates for charitable tax credits.
CRA offers this nifty calculator that provides a great illustration of how it all works.
Recognizing this seemly minute technical difference is also a recognition of Canada's generous and unique encouragement of charitable donations from members of the public.
A great term that I learned at one of the universities I worked with was "tax-smart giving." It gets to the point in your fundraising marketing materials without getting into sticky details.
(Caveat: I speak as a lay-woman and not a financial or legal professional. Please remember to consult with your own professional advisors.)