Where to change money in Bangkok: SuperRich, banks, the airport or an ATM?

The exchange rate you get in Bangkok can quietly swing by a few percent depending on where you hand over your cash — and on a serious sum that is real money left on the table. The good news is that the ranking is stable and easy to learn: the city’s dedicated money changers beat the banks, the banks beat the airport, and the airport beats your hotel. The more interesting question is when to skip cash exchange altogether and just use an ATM. Here is how the options actually compare in 2026, and the one trap — on both ATMs and card machines — that costs people the most.

The pecking order, and why it exists

Every method converts your money at some rate, and the gap between the best and the worst is really a gap in overheads. A dedicated money changer deals in huge volume at low margin, so it can post a rate close to the wholesale “mid-market” number you see on a currency app — often within a fraction of a percent. A bank builds in a wider spread; an airport counter pays sky-high rent for a captive audience and prices accordingly; a hotel desk is pure convenience and charges for it. Across those extremes the difference can be several percent of the amount — trivial on a few thousand baht of holiday spending, but meaningful once you are changing the equivalent of a month’s rent. That single fact drives the whole decision: the more cash you are changing, the more it is worth a short trip to a city changer; the less you are changing, the more convenience deserves to win.

City money changers: the best rate, if you go to them

The rate winners are the independent exchange chains, and they cluster where the competition is thickest. Pratunam (around the Ratchaprarop and Chit Lom area) has shops almost next door to one another — SuperRich green, SuperRich orange and Vasu trading side by side keeps everyone honest — and you will also find good branches around Nana, Asok, Siam and Silom, most of them a short walk from a BTS, MRT or Airport Rail Link station. A few things worth knowing before you go: you must show your physical passport to change cash, even a small amount, and a phone photo usually will not do; the best rates are reserved for large, clean, unmarked high-denomination notes (a crisp US$100 bill gets more baht per dollar than a worn small note, which may even be refused); and rates move all day, so it is worth checking a shop’s live online rate board before you travel across town. Flagship branches can build a 30-to-60-minute queue in peak season, and the first opening hour is the quietest.

The airport and the hotel: change little, or nothing

The counters in the arrivals hall exist because you have just landed and need baht for a taxi or the train, and they price that urgency — generic airport rates run noticeably worse than the city. There is one useful exception: the SuperRich booth inside the airport (near the Airport Rail Link level) posts rates only a little below its city branches, so if you spot it, it beats the generic desks. The sensible play either way is to change just 1,000 to 2,000 baht at the airport to get yourself into town, and do the real exchange at a city changer later. Your hotel front desk sits at the very bottom of the table — convenient, open late, and the worst rate you will be offered anywhere. Treat it as an emergency-only option.

The ATM: convenience with a flat fee attached

Withdrawing baht from an ATM with a foreign card is the most convenient option of all, and the underlying exchange is a good interbank rate. The catch is a flat fee the Thai machine charges on top of anything your home bank adds. That fee was for years a near-universal 220 baht, but in 2026 it is no longer fixed: many machines now show around 250 baht, and some up to 350, so read the fee on the screen before you confirm and cancel if it looks steep. Because the fee is charged per withdrawal, the way to soften it is to take out a large amount in one go rather than small sums repeatedly — most machines cap a single withdrawal somewhere around 20,000 to 30,000 baht. Stack on top of that whatever your own bank charges in foreign-transaction fees or currency markup, which varies wildly: some travel and challenger-bank cards charge nothing, which changes the maths entirely. If you have a no-fee card, the ATM becomes very competitive; if your card is expensive abroad, cash from a city changer usually wins.

The trap that costs the most: DCC

Whatever you do, watch for Dynamic Currency Conversion. At the ATM, and again on card machines in shops, hotels and restaurants, you will be asked whether you want to be charged in Thai baht or in your home currency. Being charged “in your own currency” feels reassuring, which is exactly why it is offered — it lets the machine set its own poor conversion rate and add a markup of a few percent on top of everything else. Always choose Thai baht, every time, at every terminal, and let your own bank handle the conversion at its normal rate. It is the single easiest habit that saves money, and it costs nothing to get right. And remember that outside malls, hotels and mid-range restaurants, Thailand is still largely a cash economy — street stalls, markets and many taxis take notes only — so having baht in hand is not optional.

So what should you actually do?

For most visitors the answer is a simple mix. Land, change a small amount at the airport (or draw a first sum from an ATM), and get into town. For anything substantial, carry clean high-denomination notes and change them at a city changer in Pratunam, Nana or wherever is convenient to your day. Top up from ATMs in larger, less frequent withdrawals, ideally on a card with no foreign fees, reading the on-screen charge each time. Pay by card for big-ticket and hotel spending, keep cash for everything small — and at every machine and every terminal, choose baht, not your home currency. Do that and you will hold on to nearly all of your money without ever chasing a rate across the city.

Quick answers

Where’s the best rate in Bangkok?

The city money-changer chains — SuperRich (green and orange), Vasu, Value Plus — around Pratunam, Chit Lom, Nana, Siam and Silom. Banks trail them; airports and hotels are worst.

Cash or ATM?

Cash at a city changer wins on larger sums; an ATM is more convenient but adds a flat fee (~220–350 baht) plus your bank’s charges — so withdraw more, less often, ideally on a no-fee card.

Do I need my passport?

Yes — a physical passport is required to change cash, even small amounts. A phone photo usually isn’t accepted.

Is SuperRich the best?

It’s among the best, but there are two SuperRich companies (green and orange) and Vasu and Value Plus are usually within a fraction. Use whichever is nearest with a good rate and short queue.

What’s DCC?

The “pay in your home currency” offer at ATMs and card machines. It adds a markup — always choose Thai baht instead.