[imp0cat]

Nowadays banks usually allow you to block DCC (dynamic currency conversion) and it is definitely worth it if you travel.

https://en.wikipedia.org/wiki/Dynamic_currency_conversion

[alister]

Thank you for telling me what it's called!

On the positive side, it seems that Wise must block it because I never see the DCC "choice" when using a Wise card.

As a negative point, I've noticed that AirBnB, which used to use reasonable conversion rates, has just recently started to use exorbitant currency conversion and not allow you to pay in the local currency of the country you're traveling to (so you can let your own credit card do the conversion at a lower rate). I.e., if you try to book a property in Brazil in BRL (literally clicking on the price to pay in BRL), the charge will nevertheless go through in USD (or whatever currency is your own) with AirBnb doing the conversion at the rate they choose.

[londons_explore]

Aliexpress also shows prices in one currency but then refuses to take payment in that currency and does their own conversion with an unfavourable rate... Seems to be allowed with some combinations of delivery country and currency but not others.

[direwolf20]

So they charge you for an amount different to advertised? Tell your bank. You might get a refund and at least they'll have the complaint on file so the next victim might get a refund. If enough people complain and AirBNB don't fix it, AirBNB gets banned from accepting cards.

[odysseus]

Where do you block it? I don’t see an obvious option at any of my banks or that article.

[imp0cat]

It is usually an option in your bank's app. It depends on the bank though, obviously. If it's not there, you have to be vigilant while using your card (always select the local currency when given the option).