Amex is widely accepted in Canada, including at most major retailers (Indigo Chapters, Walmart, Homesense, etc.), grocery stores (Sobey’s Longo’s, Metro, etc.), and nearly all fast food chains and gas stations. Amex is hard on smaller businesses with its comparatively higher merchant fees than other credit cards. However, since launching OptBlue, Amex has allowed small business providers to set their own rates, which equalizes a previously uneven playing field.