ISF Filing Penalties CBP: Late Filings, Violations, and 10+2

Key Points

• CBP can assess liquidated damages of up to $5,000 per violation for a late, inaccurate, or missing Importer Security Filing under 19 U.S.C. 1484a.
• The governing regulations are at 19 CFR Part 149, which set the "10+2" data elements and the 24-hour-before-lading deadline for ocean shipments.
• Each data element that is late, missing, or inaccurate can be treated as a separate violation, so a single shipment can generate multiple $5,000 claims.
• CBP can issue a "do not load" (DNL) order at origin and can place a hold on cargo that arrives without a timely ISF, preventing release until the filing is corrected.
• Mitigation is available: importers and brokers who self-identify errors, file promptly, and cooperate with CBP typically secure substantial reductions in the claimed liquidated damages amount.

On this page

1. What the ISF requirement is and where it comes from
2. The 10+2 data elements and filing deadlines
3. How CBP enforces ISF: from holds to liquidated damages
4. How $5,000-per-violation exposure accumulates
5. Mitigation: reducing or eliminating liquidated damages claims
6. What importers should do
7. Key references

CBP's Importer Security Filing program, commonly called "10+2," requires importers to transmit specific cargo data to CBP before a vessel loads at a foreign port. Violations of that requirement expose importers to liquidated damages of up to $5,000 for each violation, plus potential cargo holds at the port of lading or after arrival in the United States. The links in this article go to the primary documents: the statutes, regulations, and official CBP pages themselves. Read the source.

What the ISF Requirement Is and Where It Comes From

Congress authorized the ISF program in the Security and Accountability for Every Port Act (SAFE Port Act) and codified the importer filing obligation at 19 U.S.C. 1484a. CBP then promulgated the detailed implementing rules at 19 CFR Part 149.

The ISF requirement applies to cargo arriving by ocean vessel. Air, truck, and rail shipments are not subject to Part 149, though they carry their own advance-information requirements under separate programs.

The filer of record is the importer of record, not the carrier or freight forwarder. An importer may authorize a licensed customs broker or a third-party filing agent to transmit the ISF on its behalf, but the legal obligation and the liquidated damages exposure rest with the importer.

The 10+2 Data Elements and Filing Deadlines

The importer's 10 elements

Under 19 CFR Part 149, importers must provide ten data elements before the shipment is loaded aboard a vessel at the foreign port:

• Seller name and address
• Buyer name and address
• Importer of record number or FTZ applicant identification number
• Consignee number(s)
• Manufacturer (or supplier) name and address
• Ship-to party name and address
• Country of origin
• Commodity HTS-6 classification
• Container stuffing location
• Consolidator (stuffer) name and address

The last two elements (container stuffing location and consolidator) may be updated up to 24 hours before the vessel's arrival in the United States when the information is not available at time of loading.

The carrier's 2 elements

Vessel carriers separately must provide vessel stow plan and container status messages. Those obligations fall on the carrier under Part 149 and are distinct from the importer's exposure discussed in this article.

The 24-hour deadline

For most containerized ocean cargo, the ISF must be transmitted no later than 24 hours before the cargo is laden aboard the vessel at the foreign port. Late transmission, even by minutes, is technically a violation. CBP's Automated Targeting System (ATS) uses the ISF data to perform risk scoring, so timeliness is operationally significant, not just a paperwork formality.

How CBP Enforces ISF: From Holds to Liquidated Damages

"Do not load" orders

When ATS flags a shipment, CBP can transmit a "do not load" (DNL) message to the carrier and the foreign port authority before the vessel departs. A DNL order prevents the cargo from being placed on the vessel. Resolving a DNL typically requires the importer or broker to correct or complete the ISF and obtain CBP confirmation before loading is permitted, which can cause missed sailings and significant demurrage costs.

Holds after arrival

If cargo arrives at a U.S. port without a timely or accurate ISF, CBP may place a cargo hold in the Automated Commercial Environment (ACE) system. The hold prevents CBP from releasing the cargo even after the entry is filed and duties are paid. The importer must correct the ISF and, in some cases, satisfy a liquidated damages claim or post a bond before release is granted.

Liquidated damages claims

CBP issues liquidated damages claims through its Fines, Penalties, and Forfeitures (FP&F) offices. The claim is assessed against the importer's bond. If the importer does not have a continuous bond on file, CBP may require a single-entry bond or direct payment. Claims are typically issued after the violation is identified, which can be weeks or months after the shipment arrives.

How $5,000-Per-Violation Exposure Accumulates

The statutory ceiling under 19 U.S.C. 1484a is $5,000 per violation. CBP's interpretation of "violation" is broad and can be applied element by element or shipment by shipment, depending on how the FP&F office frames the claim.

Common violation scenarios

• No ISF filed at all: The entire filing is missing. CBP typically treats this as one violation per bill of lading, but it is the most serious category because the cargo received no pre-departure risk screening.
• Late ISF: The filing arrived in ATS after the vessel loaded. Each late filing can be assessed at up to $5,000.
• Inaccurate data elements: An HTS-6 code, country of origin, or manufacturer name that does not match the actual cargo. CBP can assess a separate violation for each inaccurate element.
• Failure to update: When cargo details change (for example, the consolidator changes after filing), the importer must amend the ISF. Failure to update is itself a violation.

A mid-sized importer with recurring ISF errors across dozens of monthly shipments can accumulate six-figure liquidated damages exposure quickly. Continuous bond obligors should be aware that repeated claims erode surety relationships and can affect bond renewal terms.

Mitigation: Reducing or Eliminating Liquidated Damages Claims

Liquidated damages claims are not automatic final assessments. CBP's FP&F offices have structured discretion to reduce or cancel claims based on factors the importer presents in a petition for relief.

Grounds for mitigation

• Prior compliance record: An importer with a clean ISF history and a large volume of compliant filings is more likely to receive a significant reduction on a first or isolated violation.
• Voluntary self-disclosure: Proactively identifying and correcting ISF errors before CBP raises them is among the strongest mitigation factors available.
• Promptness of correction: Filing or amending the ISF as soon as an error is discovered, rather than waiting for CBP to demand action, demonstrates good faith.
• Systemic remediation: Describing and documenting the process changes made to prevent recurrence (new SOPs, broker instruction letters, AMS/AES audits) strengthens a petition.
• Inability to pay: Where a smaller importer can document financial hardship, CBP may apply additional discretion, though financial mitigation is a separate track from compliance-based mitigation.

The petition process

After receiving a liquidated damages claim, the importer (or its broker or attorney) files a written petition with the issuing FP&F office. There are typically two levels: an original petition and a supplemental petition if the original reduction is unsatisfactory. Time limits apply, and missing a deadline can waive the right to further review. Importers facing a liquidated damages claim should treat the petition deadline with the same urgency as a protest deadline. For background on protesting other CBP decisions, see our article on CBP Protest under 19 U.S.C. 1514.

ISF versus 19 U.S.C. 1592

ISF violations under 19 U.S.C. 1484a are a liquidated damages regime, not a fraud-based penalty regime. They are assessed through the bond and FP&F process, not through the penalty track under 19 U.S.C. 1592, which covers entry fraud, negligence, and gross negligence. The two tracks are legally separate and can run concurrently if a single shipment involves both an ISF violation and a material entry discrepancy. For more on the 1592 track, see our companion article on customs recordkeeping penalties and how they differ from 1592.

What Importers Should Do

• Audit your ISF filing rate and accuracy now, before CBP does. Pull your ACE transaction data and verify that every ocean shipment from the past 12 months has a timely ISF with matching HTS-6 codes, country of origin, and manufacturer details. Gaps found internally are far easier to address than gaps found during a CBP inquiry.
• Establish a broker instruction protocol with written confirmation. If a licensed broker files ISFs on your behalf, use written filing instructions with version control and require the broker to send you the ISF transaction number and timestamp for every filing. Retain those records.
• Respond to FP&F claims immediately. If you receive a liquidated damages claim, calendar the petition deadline on receipt. Prepare a factual narrative of the violation, your compliance history, and the corrective actions taken. Submit the petition within the allowed window.
• Document systemic improvements. Written standard operating procedures, training records, and broker performance reviews are the documentary evidence that supports a mitigation petition and that CBP officers look for when deciding how much relief to grant.

Key References

• 19 U.S.C. 1484a - Importer Security Filing statutory authority, $5,000 per violation ceiling
• 19 CFR Part 149 - ISF implementing regulations: the 10+2 elements, deadlines, and amendment rules
• CBP Importer Security Filing (10+2) program page - CBP's overview of ISF requirements, FAQs, and filing guidance
• Federal Register - Search for the ISF final rule and any subsequent amendments to Part 149
• ACE Portal (CBP) - The system through which ISFs are transmitted and through which transaction records can be retrieved