US law requires banks in a non DCCC transaction to show the amount in the foreign currency, the rate of exchange and any added on fees. If your billing statement does not show this info, it's a DCC transaction. Check your statement for that info.
Also download FX app to your phone and easily see what the US rate should be instantly at the merchant if you have any sort of reasonable data plan in foreign lands.
Last edited by JEFFJAGUAR; Oct 29, 2019 at 10:01 am