Paying for things in Thailand: what actually works.

The short version

Thailand is one of the better countries in the world for a visitor from China to pay in, and it is still not home. Alipay and WeChat Pay work at a very large number of Thai merchants, but not at all of them, and the acceptance skews heavily toward the places that court Chinese custom. Thai domestic QR payment, PromptPay, is nearly universal and mostly closed to visitors without a Thai bank account. UnionPay cards work at most ATMs and many card terminals. International Visa and Mastercard credit cards work almost everywhere that takes cards at all. And cash still settles a surprising amount of daily life, particularly in markets, with drivers and at small kitchens.

The practical conclusion our desk gives arriving families is to carry three layers and never rely on one: the phone wallets for retail and restaurants, at least one international card for hotels, hospitals and car hire, and a working cash float in baht for everything small. Families who arrive with only a phone spend the first week discovering the exceptions at inconvenient moments.

Alipay and WeChat Pay in practice

Both wallets operate in Thailand through cross border acquiring arrangements, which is why they work at all: the Thai merchant is paid in baht, the payment is settled back through the wallet in the home currency, and the wallet applies its own exchange rate and any applicable fee. The acceptance footprint is genuinely wide in the places our clients spend: department stores and the major malls, airport retail and duty free, hotel front desks, hospital cashiers at the large private hospitals, chain pharmacies, convenience stores, tourist attractions and a very large number of restaurants. In Chinese oriented districts, including Yaowarat, Huai Khwang, Pattaya and parts of Phuket, acceptance is close to total.

Where it thins out is instructive. Small independent kitchens, market stalls, most street vendors, taxis hailed on the street, many hospital departments outside the main cashier, government offices and small landlords generally do not take them. Neither do most professional service firms. The other thing to know is the direction of the scan: at some merchants you scan their static QR code, at others they scan the barcode in your app, and staff at smaller merchants are often only trained in one. If a payment fails once, the second attempt in the other direction frequently succeeds.

Two operational points. Exchange rates and fees applied by the wallet are set by the wallet and its partners, not by the merchant, and they are not always the best rate available to you, so for a large purchase compare against a card before paying. And connectivity is a real dependency: buy a Thai data package or arrange proper roaming at the airport, because a wallet with no signal is a wallet with no money in it.

PromptPay, and why visitors mostly cannot use it

PromptPay is Thailand's domestic instant payment system, and its QR standard is what sits on the counter of essentially every small business in the country, including the ones that take nothing else. A Thai resident pays with it by scanning from a Thai bank app; the money moves instantly and free between Thai accounts. It is the reason Thailand became a low cash society faster than most of its neighbours.

For a visitor, the barrier is upstream: paying via PromptPay generally requires a Thai bank account or a Thai payment app tied to a Thai mobile number and identification. Cross border interoperability between Thai QR and some foreign systems has been developing steadily under central bank linkage arrangements, and coverage differs by home bank and by app, so it is worth checking with your own bank whether your app can pay a Thai QR code before you assume it cannot. The position changes; the Bank of Thailand and your home bank are the authorities on what is live.

UnionPay, and cards generally

UnionPay is well established in Thailand. Most Thai ATMs accept UnionPay cards for cash withdrawal, and card terminals at hotels, hospitals, department stores and larger restaurants generally accept it, although acceptance at small merchants is patchier than for Visa or Mastercard. Two costs to plan for. Thai ATMs charge a fixed foreign card withdrawal fee per transaction on top of anything your home bank charges, which makes many small withdrawals meaningfully more expensive than fewer large ones, subject to your card's per transaction limit.

The second is dynamic currency conversion. Thai terminals and ATMs will frequently offer to charge you in your home currency rather than baht, presented as a helpful convenience. It is almost never the better rate. Decline it and pay in Thai baht, and let your own card issuer do the conversion. This single habit saves more money over a long stay than any other payment decision a visiting family makes. For hotels, hospitals and car hire, expect a card to be required for the pre authorisation hold even where the final bill is settled another way.

When a Thai wallet or account is worth the trouble

For a two week visit, no. For a family spending months here, running a household, paying staff, utilities, school fees and rent, a Thai bank account moves from convenient to necessary, and it is more work than most arrivals expect. Banks apply their own onboarding requirements to non residents and these differ materially between banks and even between branches: expect to be asked for a passport, a long term visa rather than a tourist stamp, proof of a Thai address, and sometimes a reference or an employment or company document. Bring more documentation than you think you need and go in person.

Thai e-wallets sit in between. They are cheap and useful for topping up transport, paying small merchants and settling household bills, and they typically require a Thai mobile number and identification to register at any useful limit. If a family is going to be here for a season, our office arranges the Thai SIM on day one, because it is the key that unlocks almost everything else, including delivery apps, ride hailing accounts and the appointment systems the hospitals use.

Moving larger sums, lawfully

Everything above concerns spending money. Moving capital is a different subject with a different discipline, and our position on it is fixed. Larger sums move through banks, in the name of the person or entity that will hold the asset, with the documentation the receiving institution requires, and in compliance with the currency regulations that apply to the sender in their own jurisdiction. We do not advise on those regulations, we do not comment on how they might be arranged around, and we will not be part of any structure designed to do so. Your own bank and your own adviser decide what is available to you.

What we do handle is the Thailand end. For a property purchase in particular, the funds have to arrive in foreign currency, be converted in Thailand, and generate the foreign exchange transaction documentation the Land Department expects at transfer, which means the remittance is planned in the right name and through the right channel before a deposit is paid. For household costs and school fees, a properly opened Thai account and a scheduled transfer arrangement through your home bank is the ordinary answer, and it is worth setting up early rather than repeatedly wiring ad hoc amounts, which tends to attract questions at both ends.

Payment acceptance, cross border QR linkages, ATM fees and bank onboarding requirements change frequently and vary by merchant, bank and branch. Confirm current acceptance and fees with your own bank or wallet provider before travelling, check the position on Thai QR interoperability with the Bank of Thailand, and confirm account opening requirements with the specific Thai bank branch you intend to use.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.