European interchange fees are capped at 0.3%, so unless you are making money hand over fist from other means, giving back more than 0.5% cashback rarely makes f

European interchange fees are capped at 0.3%, so unless you are making money hand over fist from other means, giving back more than 0.5% cashback rarely makes financial sense. Amex own-branded cards are excluded from this as they avoid the three-party relationship that falls under these rules, but some (e.g. airline amex cards) are capped at 0.3% interchange fees. See this article for more info https://www.headforpoints.com/2018/02/08/american-express-european-court-of-justice-interchange-fees/ https://www.headforpoints.com/2018/02/08/american-express-eu...