Bangkok Suvarnabhumi (BKK) · Currency Exchange Guide · Last checked 17 October 2026

The BKK Suvarnabhumi Basement Secret

You have cleared immigration at Suvarnabhumi, your bag is on your back, and the first exchange booth you see is right there in the baggage reclaim. Almost all guides we read say the same about it: skip it, or change very little. The booths people rate more highly are one level down, in the basement beside the Airport Rail Link station.

This guide sets out what those sources say, how well they agree with each other, and what we could not confirm. When a detail rests on a single source, we say so. All were last checked on 17 October 2026.

The short version

• Best reported spot: the basement level (Level B), next to the Airport Rail Link station, where SuperRich and other independent money changers operate.
• Weakest reported spot: the bank-run kiosks in the baggage reclaim hall and just outside customs.
• If you need a visa on arrival: the fee is 2,000 baht, in cash, in Thai currency only.
• If you would rather use an ATM: two 2026 guides put the fee at 220 baht per foreign card withdrawal, before whatever your own bank adds.

Why the basement is the one people recommend

Backpacklife and Thailand Guide both steer you to the basement booths and away from the bank kiosks in the baggage reclaim hall and just outside customs, which they describe as the weakest rates in the airport. Between them, the guides name SuperRich and HappyRich as the independent changers worth looking for.

Why would a basement booth beat one in the arrivals hall? Our own reading, which no source proves, is that several changers sit side by side down there, so they are easy to compare, and the station draws commuters and airport staff as well as people who just landed. A booth in the arrivals hall mostly sees travellers who need cash right now, and a booth that expects hurried customers has little reason to sharpen its prices.

The rate difference is real, but you should not treat any single percentage as fixed. We have not found a published, dated rate comparison for BKK that we trust, so we are not quoting one. The sensible habit is the same as anywhere else: look up the mid-market rate on your phone, then compare it with the number on the board. Our mid-market rate guide shows how.

Finding the SuperRich booth

The most specific directions come from a June 2024 guide. It says the SuperRich orange booth is on the basement floor at the Airport Rail Link station: take the escalator down towards the station, and the booth is just past the long escalator. The same guide lists its hours as 05:30 to 23:30.

Treat those hours as a lead rather than a fact. They come from one source, and that source is two years old. If you land close to the end of the evening, a sensible move is to change only the small amount you need to get into the city, and do the rest when you can compare properly.

Signs inside the airport change, and guides describe the same place in slightly different words, so allow a few minutes. Follow the signs for the train, go down to the lowest level, and look for the booths before you reach the ticket machines.

How to compare two booths in thirty seconds

You do not need a calculator to find the better booth, but a worked example shows why the board matters more than a sign saying "no commission". The numbers below are made up to show the method, not real BKK rates.

Say the mid-market rate on your phone shows that one unit of your home currency equals 30 baht. Booth A offers 28.8 baht per unit. Booth B offers 29.4. Booth A is 4 per cent below the mid-market rate, because 28.8 divided by 30 is 0.96. Booth B is 2 per cent below it, because 29.4 divided by 30 is 0.98.

On 200 units of your currency, Booth A hands you 5,760 baht and Booth B hands you 5,880. That is a difference of 120 baht, for the same banknotes and the same minute of your time. The booth that looks friendlier or has the shorter queue is not necessarily the cheaper one.

Three habits make the comparison reliable:

• Compare the buying rate for your currency, not the selling rate. Boards usually show both, so read the right column.
• Ask the clerk to confirm the total in baht before you hand over anything.
• Check whether a fee is added at the end. A rate that looks good can be undone by a separate charge, so ask what you will receive after everything.

If you need cash before immigration: visa on arrival

If you are applying for a visa on arrival, the fee is 2,000 baht. A visa guide updated in September 2026 says it must be paid in cash and in Thai currency only. The same page says there are exchange booths in the hall just before the visa on arrival counters, so you do not have to go downstairs before joining the queue.

That booth detail comes from one source, so confirm it when you get there. The practical approach is to change just enough for the fee and a small buffer in that hall, then do your main exchange afterwards at the basement booths, where you can compare. Whether you need a visa on arrival at all depends on your nationality, so read our visa on arrival guide and check the official Thai government source before you fly.

The same guide says your passport should be valid for at least 30 days and lists the eligible countries at the airport information stand. Neither point replaces the official rules, so check them before you travel.

ATMs: a flat fee that hurts on small amounts

Backpacklife (June 2026) and Thailand Guide (reviewed September 2026) both put the fee at around 220 baht for each withdrawal on a foreign card. That is charged on top of any fee from your own bank. One of them also says machines typically allow 20,000 to 30,000 baht per withdrawal; that limit comes from a single source, so treat it as a rough guide.

A flat fee means the size of the withdrawal matters. This is our arithmetic, not a quoted figure: a 220 baht fee on a 5,000 baht withdrawal is 4.4 per cent, while the same fee on 10,000 baht is 2.2 per cent and on 20,000 baht is 1.1 per cent. If you are going to use an ATM, take out one larger amount instead of several small ones.

If the machine asks whether to charge you in your home currency or in baht, choose baht. That prompt is Dynamic Currency Conversion, and our DCC guide explains why it usually costs more.

Before you travel, check what your own bank or card charges for foreign withdrawals. We cannot see your card terms, and the 220 baht is only the machine operator's side of the cost.

How much to change at the airport

There is no single right amount, but the logic is simple. Change enough to cover the first day: transport into the city, a meal, a tip or two, and anything that only takes cash. Then use the better options once you are settled.

A few things to weigh:

• The train ride and a first meal need only a small amount, so there is little to gain by changing a large sum under time pressure.
• If you have a travel card or a bank card with low foreign charges, you may use cash less than you expect. Our guide on forex cards and our credit card versus cash article cover that decision.
• Carrying a very large amount of cash is its own risk. Changing only what you need keeps the rest safe in an account.

Getting into the city

Three sources place the Airport Rail Link station on the basement floor, which is why the basement exchange booths are so convenient: you can change money and walk straight to the train. We are not quoting the fare or journey time. The only figures we found were from a 2017 article, and fares change. Check the operator's own notices at the station.

If you take a taxi instead, an official Thai government tourism page (updated July 2023) says the airport adds a 50 baht surcharge above the fare shown on the meter. That is the newest official figure we could find, so ask the driver or the queue attendant whether it has changed. Have some baht in your pocket either way.

Carrying cash into and out of Thailand

The same government portal sets out the cash rules, as of 2023. There is no limit on bringing baht into the country. Foreign currency can be brought in, but amounts above USD 20,000 (or the equivalent) must be declared to customs. Tourists can take up to 50,000 baht per person out of the country, and amounts above 450,000 baht must be declared. These figures are three years old, so check the current rule if you are carrying a large sum.

Common mistakes at the booth

• Changing a large amount at the first booth you see. Walking one level down is usually worth the extra few minutes.
• Trusting a "zero commission" sign. A rate that is far from the mid-market rate is the real fee.
• Not counting the cash before leaving the counter. Count it in front of the clerk and ask for a receipt if one is offered.
• Accepting the home-currency option at an ATM. Choose baht.
• Waiting until the last moment. If you need the visa fee in cash, plan for it before the queue starts.

Leftover baht before you fly home

Many travellers end up with a pocket of baht on the last day. We could not verify which exchange booths operate on the departure side at Suvarnabhumi, so we are not naming any. Spend small notes on food and souvenirs before you reach the airport, and keep larger notes for a currency exchange at home, where you can compare rates properly. If you plan to leave with more than 50,000 baht per person, remember the limit in the cash rules above.

Cash or card: how to split your money

Most trips work best with a mix. Cash covers the things that only take notes and coins, and a card covers hotels, bigger meals and shopping where it is accepted. A common mistake is to change too much cash at the airport because it feels safe, then carry it around for a week.

A practical split is to keep a modest cash float for the first two or three days, then top it up from an ATM or a counter in the city once you know what you actually spend. This guide cannot tell you how much that is, because it depends on your hotel, your plans and how many meals you eat at street stalls. What it can tell you is that every rate you accept at the airport is a rate you could have compared with others later.

Keep your receipts and notes

Keep the receipt from any exchange until you are home. If the amount on the receipt does not match the cash you were given, raise it before you leave the counter, not after. Keep your notes in two places, one in your wallet for daily use and one in a bag or hotel safe, so a lost wallet does not take your whole budget with it.

If something looks wrong on the board, such as a rate that is far from what your phone shows, trust that instinct. You can always try the next booth before you hand over any cash.

What we could not confirm

• A Kasikorn counter at the airport. An earlier version of this guide compared SuperRich with Kasikorn. None of the sources we checked this time place a Kasikorn exchange counter at BKK, so we have removed the comparison.
• Other SuperRich locations inside the airport. Older guides mention some. We found no consistent, recent evidence, so we are not sending you to any.
• How many booths there are in the basement. The guides name only SuperRich and HappyRich, and none gives a full list.
• Anything from the airport's own website. It blocked our automated check, so every airport-specific detail above comes from travel guides, which are not official sources and can be commercial. We will update this page when we can verify against the airport directly.

A simple plan

1. Check the mid-market rate on your phone before you land.
2. If you need a visa on arrival, change only the fee plus a small buffer in the hall before the counters.
3. After immigration, go down to Level B and compare the boards before you hand over cash.
4. If you prefer an ATM, make one larger withdrawal and choose baht when asked.
5. Keep a little baht for the train or the taxi surcharge.

FAQ

Is it worth changing money at Suvarnabhumi at all?
For a small amount to get you started, yes. For a large amount, the guides we checked suggest comparing the basement booths first, and using the mid-market rate on your phone as the yardstick.

Can I pay the visa on arrival fee by card?
The guide we checked says no: cash in Thai baht only. Confirm with the official Thai government source before you travel.

Is SuperRich better than a bank counter?
The sources we read say SuperRich's airport booth beats the bank kiosks in the arrivals area, but they give no dated numbers. Look at the board and compare it with the mid-market rate on the day.

Sources and how we checked them

Checked on 17 October 2026. Where we call something confirmed, at least two of these sources agree. All are travel guides or government portals; none are the airport’s own pages.

• Backpacklife, travel guide, published June 2026.
• Thailand Guide, arrivals guide, reviewed September 2026.
• TLDRLSS, travel blog, June 2024 (SuperRich booth directions and hours).
• Thaiest, visa on arrival guide, updated September 2026.
• Thailand.go.th, government portal, currency rules, 2023.
• Thailand.go.th, government portal, taxi rates, 2023.

Editorial note: The counter, rate and airport information in this guide is editorial and is not paid for. Rates and fees change, so confirm the final rate at the counter before exchanging. Visa and cash-carrying rules are general guidance and may change; check official Thai government sources before you travel.