INTERNATIONAL TRADE LAW
Customs Seized Your Cash? CBP Currency Rules Explained
If you carry more than $10,000 in cash or monetary instruments across a U.S. border and fail to report it, Customs and Border Protection can seize every dollar — not just the amount above $10,000. There is no limit on how much money you may legally bring into or take out of the United States. The violation is not carrying the cash; it is failing to declare it. Travelers lose money at airports and land crossings every week for that single paperwork mistake, and recovering it is a formal legal process with hard deadlines.
The $10,000 Reporting Rule
Anyone transporting more than $10,000 into or out of the United States must file a report with CBP at the time of crossing. This requirement comes from the Bank Secrecy Act (31 U.S.C. § 5316), and the report is filed on FinCEN Form 105, the Report of International Transportation of Currency or Monetary Instruments — also called a CMIR.
The rule applies to U.S. citizens and foreign visitors alike, on the way in and on the way out. It also covers far more than paper bills.
| What counts toward the $10,000 | What it does NOT change |
|---|---|
| Cash (U.S. and foreign currency) | The amount you may legally carry — there is no cap |
| Traveler’s checks | Your right to carry it, if you report it |
| Money orders | The penalty for an honest, reported sum — none |
| Negotiable instruments (e.g., endorsed checks) | — |
The threshold is “more than $10,000,” and it is aggregated. A family or group traveling together cannot split $30,000 into three $10,000 bundles to slip under the line — the total moving together is what counts.
Why CBP Seizes the Entire Amount
When a traveler fails to file the CMIR, CBP has authority under 31 U.S.C. § 5317 to seize the full sum, not merely the portion exceeding $10,000. A passenger carrying $15,000 who does not declare it can have all $15,000 taken.
Two points routinely surprise travelers:
- The source of the money does not matter at the seizure stage. Even cash from a legitimate business sale or a lifetime of savings can be seized if it was not declared. The burden then falls on you to prove the lawful source and intended use to get it back.
- Splitting the money up is its own crime. Structuring a movement of cash to avoid triggering the report — handing some to a spouse, breaking it into smaller envelopes — is a separate violation under 31 U.S.C. § 5324, and it strengthens the government’s forfeiture case.
Willful violations carry criminal exposure on top of forfeiture: under 31 U.S.C. § 5322, penalties can reach a fine of up to $500,000 and up to ten years in prison, and bulk cash smuggling is separately criminalized under 31 U.S.C. § 5332. Most traveler cases proceed as civil forfeitures, but the criminal statutes are why you should never make statements to officers without understanding your rights.
What Happens After the Seizure
CBP gives the traveler a receipt or seizure notice at the port, but the formal process begins later. The agency’s Fines, Penalties, and Forfeitures (FP&F) office reviews the case and mails a Notice of Seizure together with an Election of Proceedings form and the “Notice of Seizure and Information to Claimants” letter required by the Civil Asset Forfeiture Reform Act (CAFRA). This is the document that starts your clock.
The Election of Proceedings form asks you to choose how to respond. The deadlines printed on your notice control, but the standard choices are:
| Option | What it means | Where it goes |
|---|---|---|
| Petition for remission or mitigation | Ask CBP to return the money administratively, with proof of lawful source | Stays inside CBP (FP&F) |
| Offer in compromise | Propose a settlement to resolve the case | Stays inside CBP |
| File a CAFRA claim | Demand the case go to federal court, shifting the burden to the government | Referred to the U.S. Attorney |
| Take no action / abandon | Do nothing and the money is forfeited administratively | Money is lost |
Filing a CAFRA claim is the option that forces the government to prove its case: once you file a valid claim, the matter must be referred for judicial forfeiture, and the government generally has 90 days to file a complaint in federal court under 18 U.S.C. § 983 or return the funds. A petition, by contrast, keeps the decision inside CBP and asks the agency for discretion. Each path has trade-offs, and the right choice depends on the facts and on how much you are willing to litigate.
The single worst move is to do nothing. Missing the deadline on the notice is treated as abandonment, and the money is forfeited with no further recourse.
How to Avoid a Seizure
The rule is easy to comply with: if you are moving more than $10,000, declare it. File FinCEN Form 105 with a CBP officer, report the full and accurate amount, and keep documentation of where the money came from. A truthful report costs nothing — there is no tax or fee for carrying reported cash. The only thing the law punishes is the failure to tell CBP.
If your cash has already been seized, preserve every document the officers gave you, write down what was said, and act before the deadline on your notice.
Frequently Asked Questions
Is it illegal to carry more than $10,000 into the U.S.? No. There is no limit on how much you can legally carry. You simply must report any amount over $10,000 on FinCEN Form 105 at the time you cross the border.
Can CBP really take all of it, even if the money is legitimate? Yes. Under 31 U.S.C. § 5317, undeclared currency is subject to seizure in full regardless of its source. Proving a lawful source helps you recover it later but does not prevent the seizure.
What if my family was traveling together? The $10,000 threshold applies to the total amount moving together, not per person. Dividing the money among travelers to stay under the limit is “structuring” and is itself a violation under 31 U.S.C. § 5324.
How long do I have to respond after a seizure? Your deadline is stated on the Notice of Seizure from CBP’s Fines, Penalties, and Forfeitures office. Do not let it pass — missing it generally results in automatic forfeiture. Read the notice carefully and respond in time.
For a deeper look at how CBP handles confiscated property generally, see our guide to CBP seizures, fines, penalties, and forfeitures and what a customs notice of seizure means.
Had cash seized at a U.S. airport or border crossing? Reidel Law Firm represents travelers in CBP currency seizure and forfeiture cases, with direct attorney access and a clear plan for your deadline. Speak with an international trade attorney →
