Money in a Disaster in Japan 2026 — Power Cuts Kill Cards and ATMs. How Much Cash to Carry

⚡ 30-second answer: When an earthquake or typhoon causes a power cut in Japan, registers and networks stop — so card payments, QR payments and ATMs all fail at once. That's why, even in an increasingly cashless country, cash is treated as emergency equipment here. Japan's Fire and Disaster Management Agency lists "cash" and "¥10 coins" among valuables in its official emergency-kit checklist. For a visitor, plan on ¥20,000–30,000 per person in cash plus a few ¥100 and ¥10 coins. For safety information itself, use the Japan Tourism Agency's Safety Tips app (English, Korean, Traditional and Simplified Chinese).

Quick reference	Value
Cards and ATMs in a power cut	Essentially unusable
Official prep list	FDMA specifies cash and ¥10 coins
Cash to carry as a visitor	¥20,000–30,000 per person + coins
Where coins matter	Payphones (171), vending machines
Where to get safety alerts	Safety Tips (Japan Tourism Agency)
Last verified	July 2026

This article covers the money side only. For how to protect yourself and evacuate during an earthquake, see our disaster and earthquake guide for visitors and the official sources listed below.

Why cash, specifically

Japan has gone a long way cashless — but a disaster removes the foundation that rests on. The reason is simple.

When the power goes out, the shop's equipment doesn't work. Register terminals, card readers, network lines: all of it runs on electricity. If the whole area loses power, cards and QR payments are dead. ATMs are no different — a bank or convenience-store ATM without power simply stops.

So in a disaster, the cash in your pocket is the entirety of the money you can actually spend. It doesn't matter what your card balance says if you can't withdraw it.

For visitors this bites harder. A traveller with no base in Japan has fewer fallbacks than a resident once the cash runs out.

Cash is on Japan's official prep list

This isn't our opinion. The Fire and Disaster Management Agency (FDMA) emergency-kit checklist lists, under valuables, "cash" alongside "¥10 coins."

The ¥10 coins are specified for a reason: Japan's disaster message dial "171" can be used from a payphone. The Prime Minister's Office notes that 171 "can be used from ordinary subscriber phones, payphones, and some IP phones."

When mobile networks are congested or down, payphones sometimes still work — and that takes coins.

How much to carry as a visitor

We normally suggest ¥20,000–30,000 per person in cash for a trip to Japan (see how much cash you actually need).

That level holds up from a preparedness angle too — it covers food, drink and transport even if an outage runs for a few days.

Favour ¥1,000 notes. If a shop falls back to hand-calculating totals during an outage, a ¥10,000 note may be impossible to give change for.

Where coins earn their place

Payphones aren't the only reason to carry coins in an emergency.

• Payphones (¥10 coins) — a way to make contact when mobile networks fail; 171 messages work from them too
• Vending machines (¥100 coins) — where power is still on, these can be a way to secure drinks
• Coin lockers and laundromats (¥100 coins) — useful when your movement is restricted

Even in normal times, Japan still has places where only cash works. In a disaster, assume that set expands sharply.

If a card fails or goes missing

Not every card problem is a power cut, and the fix depends on the situation.

• Card blocked or declined → what to do when your card is declined
• Wallet lost or stolen → the complete lost-wallet manual
• Topping up cash in normal conditions → withdrawing with an overseas card at a Seven Bank ATM

Don't keep your cash and your cards in the same wallet. Lose one and you still have the other.

Get safety information from official sources

We're a money publication. For decisions about evacuation and your physical safety, follow the instructions of the official agencies.

The official sources available to you in Japan:

• Safety Tips (disaster app from the Japan Tourism Agency) — pushes earthquake early warnings, tsunami warnings, weather warnings and volcanic warnings. Available in English, Korean, Traditional Chinese and Simplified Chinese
• Japan Meteorological Agency (JMA) — the official source for earthquake, tsunami and weather warnings; multilingual pages available
• NHK WORLD-JAPAN — multilingual broadcasting during disasters
• Disaster message dial 171 — usable from payphones

Installing Safety Tips when you land is enough to start receiving multilingual alerts automatically.

FAQ

Q: Do cards really stop working in a power cut? A: Yes — the shop's register and network go down, so payments fail. ATMs stop too. Treat cash as the only reliably spendable money in that situation.

Q: How much cash should I carry in Japan? A: The same ¥20,000–30,000 per person we suggest for ordinary travel, which also holds up as disaster preparation. Add a few ¥100 and ¥10 coins.

Q: Why ¥10 coins specifically? A: They're named on the FDMA's emergency-kit list because payphones take them — and the 171 disaster message dial works from a payphone.

Q: ¥1,000 notes or ¥10,000 notes? A: Weight it toward ¥1,000 notes. Shops calculating by hand during an outage may not be able to break a ¥10,000 note.

Q: What should I do when an earthquake hits? A: This article is about money. For protecting yourself and evacuating, see our disaster and earthquake guide plus Safety Tips and JMA.

Sources: Fire and Disaster Management Agency (emergency-kit checklist), Prime Minister's Office (guidance on disaster message dial 171), Japan Tourism Agency (Safety Tips). This article covers financial preparation for a disaster; follow the instructions of official agencies for evacuation and safety decisions.