Carrying cash from Japan to Thailand
Two separate rules apply to any cash journey: one where you leave, one where you arrive.
Do you need to declare?
Yes: and on both legs of the journey. Leaving Japan, Japan Customs requires a declaration above JPY 1,000,000. Entering Thailand, Bank of Thailand (exchange control) requires a declaration above THB 450,000. The two rules are independent: satisfying one does not satisfy the other.
The two legs
| Leg | Limit | Form | Authority |
|---|---|---|---|
| Leaving Japan | JPY 1,000,000 | Declaration of Carrying of Means of Payment | Japan Customs |
| Entering Thailand | THB 450,000 | no form | Bank of Thailand (exchange control) |
The same declaration is required on departure. It can be filed on paper at the airport or online through NACCS.
No limit applies to bringing baht or foreign currency into Thailand. A customs declaration is required above THB 450,000, or above USD 15,000 in foreign currency banknotes.
If you do not declare
Japan: Penalties under the Foreign Exchange and Foreign Trade Act.
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
Japan uses JPY; Thailand uses THB.
Sources: rules as of 22 September 2026. This is general information, not legal advice; always check the official authority before travelling.