Carrying cash from United States to Singapore
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 United States, U.S. Customs and Border Protection requires a declaration above USD 10,000. Entering Singapore, Immigration & Checkpoints Authority requires a declaration above SGD 20,000. The two rules are independent: satisfying one does not satisfy the other.
Travelling as a family or group?
The threshold applies to your combined total, not per person. A family of four each carrying a little under the limit is still over it, and splitting cash between travellers to stay under does not make it legal.
The two legs
| Leg | Limit | Form | Authority |
|---|---|---|---|
| Leaving United States | USD 10,000 | FinCEN Form 105 (CMIR) | U.S. Customs and Border Protection |
| Entering Singapore | SGD 20,000 | CBNI declaration (via the Singapore Arrival Card or the official app) | Immigration & Checkpoints Authority |
The same reporting duty applies when leaving the United States.
Required when the total value EXCEEDS S$20,000, exactly S$20,000 does not trigger it. The duty applies whether the cash is yours or carried for someone else.
If you do not declare
United States: Seizure of the currency and possible civil and criminal penalties.
Singapore: An offence under the Corruption, Drug Trafficking and Other Serious Crimes (Confiscation of Benefits) Act 1992.
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
United States uses USD; Singapore uses SGD.
Sources: rules as of 22 September 2026. This is general information, not legal advice; always check the official authority before travelling.