Do Frequent Japan/Korea Travellers Need a Foreign Currency Account? Breaking Down the 1.5% Card Fee and Real Exchange Costs
The 1.5% overseas card fee is 1% network + 0.5% issuer, and dual-currency cards pay it too. Bank of Taiwan quotes KRW only as cash with a 15.7% round-trip spread, versus 2.45% for JPY spot — so a JPY account is worth it, a KRW one isn't (and mostly can't be opened).