Travel money
Travel money in Thailand: cash or card?
What to expect when you actually pay for things in Thailand — the currency, how far a card gets you, and the money mechanics that quietly cost travellers more than they realise.
The currency
Thailand uses the Thai baht (THB), written ฿. Baht is easy to obtain and exchange. Thai ATMs charge a fixed fee per foreign-card withdrawal on top of whatever your own bank takes, so fewer, larger withdrawals cost less than topping up daily.
Cash or card?
Hotels, malls, chain restaurants and tourist-facing businesses take cards without trouble. Street food, markets, songthaews, small guesthouses and anything outside a city centre are cash. Domestic QR payment is near-universal among Thais but generally needs a Thai bank account, so as a visitor you are back to cash or card.
Getting Thai baht
However you get hold of THB — an ATM, an exchange desk, cash you brought — you will not receive the mid-market rate you see on a converter app. The fee, the spread and your own bank's charges are all folded in somewhere.
The only figure worth recording is your effective rate: the Thai baht you actually received, divided by what your account was actually debited. Value everything you buy from that pile of cash at that rate and the fees are automatically accounted for, spread across your spending instead of sitting in a line item you have to remember. The full method is here.
Always pay in THB, never your home currency
When a card terminal, hotel desk or ATM in Thailand offers to charge you in your home currency instead of THB, decline. That is dynamic currency conversion, and it hands the exchange rate to the merchant's processor rather than your card network — at a rate that is essentially always worse.
It is offered as a convenience, and a familiar currency does feel safer, which is exactly why it works. Choosing THB is the easiest money you will save on the entire trip.
Your card charge will not match the price you paid
A card payment in Thailand is authorised in THB on the day, then settled one to three business days later at the rate in force when it clears — plus any foreign transaction fee your bank adds. The number on your statement is decided on a day you may no longer be in the country.
This matters for a budget more than people expect: if you record spending by statement date, purchases drift days forward and can land under the wrong country entirely. Why this happens, and what to do about it.