Koh Samui: changing money
What the published counter on Koh Samui pays today, against the mid-market rate and the mainland best.
Counters on Koh Samui that publish a rate
| Shop | THB per 1 USD | Notes |
|---|---|---|
| Government Savings Bank — Samui Airport exchange counters | 33.10 | 50-100 |
The airport operator names GSB as the only authorised exchange in the terminal. GSB publishes one nationwide banknote board, which is the rate shown here.
| Today's reference rate | 33.44 THB per 1 USD |
|---|---|
| Best published rate in Bangkok today | 33.50 · Grand Superrich (Soi Ratchadamri 1, Pratunam) |
What you would get in Bangkok
🕑 Rates checked: Nov 6, 15:25 (Thailand time)
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Buying and selling: the two columns explained
Brand
THB per 1 USD · Best rate applies to these banknote denominations
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- 13,350 THB33.50Notes: 100 vs mid-market +0.17%
- 23,350 THB33.50Notes: 100-50 vs mid-market +0.17%
- 33,349 THB33.49Notes: 100-50 vs mid-market +0.14%
- 43,349 THB33.49Notes: 100-50 vs mid-market +0.14%
- 53,349 THB33.49Notes: 100-50 vs mid-market +0.14%
- 63,348 THB33.48Notes: 100 vs mid-market +0.11%
- 73,348 THB33.48Notes: 100 vs mid-market +0.11%
- 83,348 THB33.48Notes: 100 vs mid-market +0.11%
- 93,348 THB33.48Notes: 100 vs mid-market +0.11%
- 103,348 THB33.48Notes: 100 vs mid-market +0.11%
- 113,348 THB33.48Notes: 100 vs mid-market +0.11%
- 123,348 THB33.48Notes: 100 vs mid-market +0.11%
All rates are for cash, collected from each shop's public rate board. Rates change during the day; the shop's board is final.
🔔 Get this rate every morning (email or push)
💡 Bring large notes: most shops pay less for small denominations.
Why island rates are worse
An island booth has no competitor fifty metres away, has to move banknotes by ferry, and knows you cannot easily walk out. Expect to lose several percent against a city rate, on top of a wider spread on anything other than dollars and euros.
Change before you go
Most visitors fly into Samui airport or take the ferry from Donsak. The last counters with published rates are in Bangkok, so change there or at Suvarnabhumi before the connecting flight.
Listed for guidance only — we track no shop on this island.
Today's USD market in Bangkok, in numbers
86 money changers in Bangkok quote US Dollar (USD) today. The best buying rate is 33.50 THB per 1 USD at Grand Superrich (Soi Ratchadamri 1, Pratunam); the lowest is 33.10 at K81 Exchange (Ram Inthra 81, K79 group). The gap between them is 1.19%, which comes to about 40 THB on 100 USD. 25 of the 86 shops are within 0.1% of the best rate, so for most readers the nearest counter in that group is the right choice.
The top rate today comes from Grand Superrich; 9 chains quote USD in Bangkok. The best-paying counters are in Ratchadamri / Pratunam, Silom / Surawong, Ratchadamri Soi 1.
Grand Superrich (Soi Ratchadamri 1, Pratunam) pays 33.50 for 100 notes but 33.24 for 1, a difference of 0.78%, which is more than the gap between most shops in town.
35 of the 63 shops with published hours stay open until 20:00 or later; the latest closes at 24:00. 58 of them open on Sunday.
In practice: change at any shop in the top group near you, bring the largest notes you have, and check the board before handing over cash, because the shop's own board is final.
Figures as read at Nov 6, 15:25 (Thailand time); they move during the day.
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