Koreans pay for almost everything by phone. Cash has quietly dropped to just 15.9% of in-person spending (Bank of Korea’s 2025 payment survey), while apps like KakaoBank, Toss, Samsung Pay and Naver Pay handle the rest — a subway ride, a convenience-store coffee, splitting dinner four ways. I genuinely haven’t held a paper bill in weeks.
I noticed it the way you notice you’ve stopped wearing a watch. Last month I went to lend my dad 50,000 won and physically opened my wallet — and there was nothing in it but a gym card and a faded receipt. I work in IT at a Korean financial company, so I should have seen this coming. But living inside it, the change is invisible until a visiting friend stares at me tapping my phone against a subway gate and asks, “Wait, that’s it?”
Do Koreans still use cash at all?
Barely, and that’s the honest answer. In-person cash spending fell to about 324,000 won a month per person in 2025 — roughly a 36% drop since 2021 (Korea Bizwire, on the Bank of Korea survey). For most of my daily life, cash simply isn’t part of the transaction. I buy a subway ticket, an iced americano, lunch, and groceries without it ever coming up.
Here’s the twist a foreigner never sees, though: even as we spend less cash, Koreans are hoarding more of it. Precautionary cash holdings climbed to an average ~541,000 won per person, up more than 50% since 2021, with everyday walking-around cash around 103,000 won. So we’ve stopped spending paper money but started stashing it — a stack of 50,000-won notes in a drawer “just in case.” My mother keeps hers folded inside a rice container. The daily reality is cashless; the psychology is not.
Which apps are banks, and which are wallets?
This is where visitors get lost, because we mix two different things all day without labeling them. The quick distinction: some are actual banks that hold your money, and some are wallets that just move it. Once you separate those, the whole screen makes sense.
On the bank side you have the internet-only banks with no branches at all. KakaoBank (카카오뱅크, kakaobaengkeu, Korea’s largest branchless internet bank) passed 26.7 million customers by the end of 2025 and is chasing 30 million (Seoul Economic Daily). Its rivals K Bank (15.5 million) and Toss Bank (around 14 million as of late 2025) round out the field. I opened my KakaoBank account from my couch in about seven minutes, no signature, no branch visit.
On the wallet side sit KakaoPay (카카오페이, kakaopei, the wallet baked into KakaoTalk), Naver Pay (네이버페이, neibeopei, the wallet inside the Naver ecosystem), Toss (토스, toseu, the all-in-one finance super-app by Viva Republica), and Samsung Pay (삼성페이, samseongpei, tap-to-pay built into Galaxy phones). Together the three big wallets serve roughly 81.5 million monthly active users — more than Korea’s entire population of about 51.7 million — because almost everyone, me included, keeps several installed (TransFi; Statista). I use Samsung Pay to tap card terminals, KakaoPay to send money to friends, and Naver Pay when I shop online. None of it feels redundant; each just fits a different moment.
| App | What it actually is | I mainly use it for |
|---|---|---|
| KakaoBank | Internet-only bank (holds money) | My main salary account |
| Toss | Super-app + Toss Bank | Transfers, checking everything at once |
| KakaoPay | Wallet inside KakaoTalk | Paying friends, splitting bills |
| Samsung Pay | Tap-to-pay on the phone | Physical stores, old card terminals |
| Naver Pay | Wallet in Naver | Online shopping |
How do Koreans split the bill after dinner?
We do it on the walk to the door, before anyone’s coat is on. The custom is Dutch pay (더치페이, deochipei, splitting the bill evenly), more casually called N빵 (N-bbang, literally “divide by N”). One person taps their card for the whole table, and by the time we’re outside everyone has already sent their share back by account transfer (계좌이체, gyejwa-ichae, a direct bank-to-bank transfer) — often just by typing in a phone number or tapping a name inside KakaoTalk.
That last part is what stuns foreign friends the most. I don’t need your bank details to pay you; I need your phone number, and the money lands in seconds, any hour, any day, no fee. The rails for real-name instant transfers have been here so long that we treat “I’ll send it to you now” as literally now, not tomorrow. After a team dinner last week, the 148,000-won bill was settled among five of us before the elevator reached the lobby. Nobody counted coins; nobody felt awkward. It’s just the texture of eating out here.
Where do you still need cash or a physical card?
Enough places that a visitor shouldn’t arrive with an empty wallet. Some corners of a traditional market (시장, sijang, an open-air local market) still prefer cash, especially older produce and snack stalls. A few veteran taxi drivers, small rural eateries, temple donation boxes, and certain government or hospital counters can still nudge you toward paper money or a chip card. My rule of thumb: keep about 50,000 won and one physical card on you, and you’ll never be stranded.
Foreign cards are their own small adventure — some Korean apps won’t accept an overseas card or a non-Korean phone number for verification, which is the real friction tourists hit. But for transit you can sidestep most of it with T-money (티머니, timeoni, a rechargeable transit card now often built into a phone). Buy a T-money card at any convenience store, top it up with cash, and tap it on every bus and subway in the country. It’s the one piece of the system that welcomes you without a Korean bank account.
Why did it happen so fast?
Three things stacked up at once. Smartphone penetration is near-total, so the payment terminal was already in everyone’s pocket. The country built real-name instant-transfer rails early, so moving money became free and immediate rather than a card network’s job. And fintech super-apps rolled banking, payments, and investing onto one screen — Toss is the clearest example, a single app where I can transfer money, check my credit score, and buy stocks before my subway reaches the next station.
Working at a financial company, I watch the back end of this every day, and what strikes me is how boring it feels from the inside. There was no dramatic switch-flip. Cash just kept losing one small errand at a time — the bus, then lunch, then the friend I owed — until one afternoon I opened my wallet for my dad and found nothing there at all. If you’re moving to Korea, don’t overthink it: get a Korean phone number and one local bank account, and the rest of the wallet assembles itself.
FAQ
Can I get by in Korea with just my foreign credit card?
Mostly in cities and chain stores, yes, but not everywhere. Some apps and small vendors reject overseas cards, so carry about 50,000 won in cash and grab a T-money card for transit.
What’s the difference between KakaoBank and KakaoPay?
KakaoBank is a real bank that holds your money with no branches; KakaoPay is a wallet inside KakaoTalk that moves money and pays merchants. Many Koreans use both.
How do Koreans send money to each other so fast?
Through real-name instant bank transfers, usually by phone number or a contact inside KakaoTalk. It’s free, arrives in seconds, and works any time of day.