I'm a bit unclear on how. So you have your ecommerce store charging in EUR, and you pay with your Monzo/Starling/Revolut whatever and get the interbank rate to

I'm a bit unclear on how. So you have your ecommerce store charging in EUR, and you pay with your Monzo/Starling/Revolut whatever and get the interbank rate to GBP. How is the store going to pass costs onto consumers in a way other than shipping costs? You can't use currency because the bank has given you the interbank rate (and cut off the card's conversion fee). Also btw if you let your card processor convert currency for you they're going to be even worse off as an EU store owner - Stripe charges 2% extra to convert your currency for example. So your fees are now going to be over 3.5%.. best to leave it in EUR. You need to run an ecommerce store to understand its very hard to ask a customer their country first. Unless you're Apple.. Also when you run an ecommerce store you want US customers too, so your UK problem is equivalent to your US problem.