Carrying cash from Thailand to South Korea
Two separate rules apply to any cash journey: one where you leave, one where you arrive.
Do you need to declare?
Part of this route is a hard limit, not paperwork. Leaving Thailand, Bank of Thailand (exchange control) caps what you may carry at THB 50,000, a prohibition, not a form. Entering South Korea, Korea Customs Service requires a declaration above USD 10,000. The two rules are independent: satisfying one does not satisfy the other.
The two legs
| Leg | Limit | Form | Authority |
|---|---|---|---|
| Leaving Thailand | max THB 50,000 | no form | Bank of Thailand (exchange control) |
| Entering South Korea | USD 10,000 | Traveler Declaration Form | Korea Customs Service |
Thai baht banknotes may be taken out up to THB 50,000 per person, rising to THB 2,000,000 for travel to Cambodia, Laos, Malaysia, Myanmar, Vietnam and the Yunnan province of China. Foreign currency banknotes may be taken out only up to the amount bought from an authorised bank or money changer. A customs declaration is required above THB 450,000 or USD 15,000 equivalent.
Below USD 10,000 in total means of payment, no permission or declaration is needed. Above it, report the amount on the Traveler Declaration Form and keep the Certificate of Foreign Currency Declaration you are given, it is what lets you take the money out again.
If you do not declare
South Korea: Failure to report is subject to fines or penalties.
There is no limit on how much you may legally carry in either direction, the duty is to report it, not to keep under it. Failing to report is the offence.
Currencies
Thailand uses THB; South Korea uses KRW.
Sources: rules as of 22 September 2026. This is general information, not legal advice; always check the official authority before travelling.