Your card works fine in Japan — the way it quietly overcharges you is one tap on one screen. Mio doesn't guess at exchange rates in an airport queue; Mio picks yen and moves on. Here's the whole picture: the DCC trap, which ATMs to trust, and when card beats cash.
At many ATMs and card terminals in Japan you'll see a prompt offering to charge you in your home currency (e.g. USD, EUR, GBP) instead of yen. That's Dynamic Currency Conversion (DCC). It looks convenient — "oh, I'll see it in dollars" — but the exchange rate is set by the ATM operator, merchant, or their DCC provider, and it typically bakes in an extra markup on top of the interbank rate. Choose JPY and the conversion is done later by your own bank / the card network (Visa, Mastercard), which is usually the better rate.
Both card networks confirm the choice is yours: under scheme rules the merchant/ATM must let you decline DCC and pay in local currency, and must show the rate and any markup. Visa's own guidance says providers "must not choose on your behalf" and cannot pressure you; if the details are missing or you feel pushed, decline. So the rule is simple and safe: always pick yen.
Ordinary Japanese-bank ATMs often reject overseas-issued cards. The dependable, tourist-friendly ones are:
• Seven Bank — inside almost every 7-Eleven, plus stations/airports. Accepts (per Seven Bank) Visa, PLUS, Mastercard, Maestro, Cirrus, UnionPay, American Express, JCB, Discover, Diners Club. English menu; broad hours (Visa/Mastercard networks listed as 24h, some brands slightly shorter). Note: "some cards with these marks may not be accepted."
• Japan Post Bank (Yūcho) — at post offices nationwide (20,000+ locations). Accepts Visa, PLUS, Mastercard, Maestro, Cirrus, JCB, UnionPay and Discover for withdrawals. Great rural coverage, but ATM hours are limited (often closed overnight and reduced on weekends).
• E-net — ATMs in FamilyMart and other spots; also supports major overseas networks. (AEON and Lawson Bank ATMs may also work for some cards — check the network logos on the machine.)
Rule of thumb: match the logo on your card (Visa/Plus, Mastercard/Maestro/Cirrus, UnionPay, JCB) to a logo on the ATM. No matching logo = try a different machine.
Two separate fees can apply, which is why one bigger withdrawal often beats several tiny ones:
• Your bank's fees — many foreign banks charge a foreign-ATM fee and/or a foreign-transaction / FX fee. This is set by your bank, not Japan. Check before you fly; some travel-focused cards waive it.
• Japan-side ATM handling fee — some machines add a small usage fee. Seven Bank states fees for overseas cards "vary by card brand" (widely reported to be roughly ¥110–¥220 per withdrawal on some networks, and free on others — treat that as indicative, not guaranteed). Japan Post notes a fee of about ¥220 may apply for some overseas cards.
Per-withdrawal limits: Seven Bank lists up to ¥100,000 per transaction (¥30,000 for magnetic-stripe-only cards); Japan Post lists a ¥50,000 single-transaction limit. Your own card's daily limit may be lower — that's usually the binding one.
Japan is far more card-friendly than it used to be, but cash still rules at small restaurants, shrines/temples, some ryokan, markets, and rural buses. General approach: tap your card where accepted (choosing JPY), and carry a modest cash buffer pulled from a 7-Bank/Japan Post ATM.
| Situation | Cheapest / safest choice | Why |
|---|---|---|
| Card terminal asks "home currency or JPY?" | Pay in JPY | Avoids the DCC markup; your bank converts |
| Need cash, card has low/no foreign-ATM fee | 7-Bank / Japan Post ATM | Withdraw yen in one go; skip airport FX desks |
| Need cash, card charges high per-withdrawal fees | Fewer, larger withdrawals | One flat fee spread over more yen |
| Big hotel / department store / chain | Card (choose JPY) | Widely accepted; no ATM fee at all |
| Small eatery, temple, rural bus, market | Cash | Card often not accepted |
| Airport currency-exchange booth | Usually avoid | Rates typically worse than ATM/bank conversion |
Before you go: check your card's foreign-transaction and foreign-ATM fees; tell your bank you'll be in Japan; enable a PIN (some ATMs need it). In Japan: use 7-Bank / Japan Post / E-net; match the logos; withdraw a sensible chunk of yen; and on every "which currency?" screen — ATM or shop — pick ¥ JPY. That single habit is the highest-value move on this page.
Related reading: browse more travel-money guides for Japan →.
Mio