You can deduct expenses for advertising, including ads in Canadian newspapers and on Canadian television and radio stations. You can also include any amount you paid as a finder's fee.
However, certain restrictions apply to the amount of the expense you can deduct for advertising in a periodical. If your advertising is directed to a Canadian market and the original editorial content in the issue is:
You cannot deduct expenses for advertising directed mainly to a Canadian market when you advertise with a foreign broadcaster.
Enter the amount on line 8521 of Form T2125, Statement of Business or Professional Activities.