Import Security Filing (ISF) Deadline: What to Know
Author:
Divya Murugan
Published On:
Apr 10, 2025
1 min read
In global trade, security is everything. The Importer Security Filing (ISF) is a critical safeguard, ensuring U.S. Customs and Border Protection (CBP) screens shipments before they depart. Missing deadlines or errors can lead to delays, hefty fines, and cargo holds. Compliance isn’t just a rule—it’s your key to smooth, risk-free imports. This blog covers ISF deadlines, penalties, and best practices to keep your shipments secure and moving.
Key Takeaways
ISF filing deadlines are critical and must be met to ensure smooth customs clearance for U.S. imports. The ISF-10 and ISF-5 deadlines require submission at least 24 hours before cargo loading at the foreign port.
Missing or inaccurate filing can result in penalties, shipment delays, and compliance issues.
Having a compliance strategy and technology can help streamline the filing process.
What is the ISF Filing Deadline

Importer Security Filing (ISF), also known as the “10+2” rule, is a mandatory requirement established by U.S. Customs and Border Protection (CBP) for importers shipping goods to the United States. It requires importers to submit specific data to CBP before goods are loaded on a vessel bound for the United States. Filing must be done at least 24 hours before the ship departs from the foreign port. Not meeting this deadline can result in severe consequences for both the importer and the shipment.
Required Data Elements for ISF Filing
ISF filing requires a minimum of 10 data elements. These are:
Manufacturer (or supplier) name and address
Seller name and address
Buyer name and address
Ship-to party name and address
Country of origin
Harmonized Tariff Schedule (HTS) code
Container stuffing location
Consolidator (stuffer) name and address
Importer of Record number
Consignee number
Each of these elements must be accurate and filed on time to avoid penalties. Accurate ISF data elements facilitate smooth customs clearance and help avoid penalties, ensuring timely release of cargo.
What Happens if I Miss the ISF Deadline

Missing the ISF filing deadline, known as late ISF filing, can result in significant penalties and operational challenges such as:
Shipment delays at the port.
Denied entry into the U.S.
Disruption in the supply chain, especially for time-sensitive shipments.
Hefty fines from CBP, along with potential cargo inspections and delivery delays.
Penalties for Inaccurate or Late ISF Filings
CBP can fine for untimely filing or inaccurate ISF filing with penalties ranging from $5,000 to $10,000 per violation. Penalties can add up fast especially if multiple violations occur in the same shipment or if the filing is not corrected in time.
Late Filing: $5,000
Incorrect or Missing Data: $5,000 to $10,000 per violation
Common Filing Errors to Avoid
When filing ISF, common errors, particularly ISF filing errors, can delay the process and result in penalties. Avoiding these errors is crucial to ensure compliance with CBP requirements. Some of the most frequent mistakes are:
Missing required data elements
Incorrect Harmonized Tariff Schedule (HTS) codes
Typographical errors in names and addresses
Failure to update shipping details after changes in plans
Being accurate in these areas can save you time, money, and frustration.
Who is Responsible for ISF Filing

The responsibility to file ISF falls on the Importer of Record (IOR), usually the entity or individual responsible for the shipment’s entry into the U.S. A customs broker often handles the ISF submission on behalf of the importer, making it crucial to have a formal agreement to define responsibilities for compliance and submission. This cannot be delegated and the IOR must ensure accurate and timely filing to avoid issues with U.S. Customs.
A well-organized freight management system can help streamline ISF filing, ensuring timely compliance and reducing delays in the shipping process.
How to Mitigate ISF Filing Penalties

If you got penalized due to ISF violation, here are ways to mitigate:
Voluntary Disclosure: If you made a mistake, voluntarily disclosing the error to CBP can reduce fines.
Immediate Correction: Correct the mistake as soon as possible to show compliance and minimize penalties.
Payment of Fines: Paying fines promptly can sometimes reduce the total penalty amount depending on the case.
What to Do After a Violation
If you missed the ISF deadline or submitted inaccurate information, do the following:
Notify CBP: Contact Customs immediately and inform them of the error or delay.
File the Corrected ISF: Submit the missing or corrected information as soon as possible.
Review Your Process: Identify and address gaps in your filing process to prevent future violations.
Best Practices for ISF Compliance

To avoid violations and ensure smooth shipments, consider these best practices:
File ISF early: Always file ISF well before the 24-hour deadline to leave room for corrections if needed.
Use reliable data: Ensure all required elements are accurate and up-to-date.
Review your procedures regularly: Stay up-to-date with ISF regulations and adjust your process accordingly.
Integrate ISF filing with your freight management strategy: A well-structured freight management system helps maintain efficiency, avoid delays, and ensure compliance.
Smart ISF Filing with Technology

Many companies use ISF Filing software to streamline their ISF filing process. Software can automate data entry, track submission deadlines, and ensure compliance with ISF regulations. Investing in the right customs compliance software helps reduce human error and speeds up your filings.
Platforms like CargoEZ assist importers, NVOCCs, and freight forwarders by providing automated reminders for filing deadlines and a structured workflow to manage ISF submissions efficiently. By integrating ISF filing with your existing freight management process, you can minimize errors and ensure timely compliance.
Exemptions and Special Cases
There are certain exemptions to the ISF rule, including shipments that:
Do not involve a sea vessel.
Are transiting the U.S. under bond.
Are goods arriving via air cargo or rail.
There are also special cases where more data elements may be required, such as high-risk shipments or those under investigation by CBP.
Foreign Trade Zone Applicants

Companies using Foreign Trade Zones (FTZs) for imports may have different filing requirements or deadlines. While the ISF filing deadline remains the same, FTZ applicants should be aware of additional CBP regulations that may affect their filings.
Preparation for CBP Audits
Tracking your ISF filings through customs compliance software ensures you stay on top of deadlines. A system like CargoEZ helps businesses monitor their filing history, flag potential errors before submission, and generate reports for internal audits. By proactively reviewing ISF status, you can identify delays early and take corrective action before they impact your supply chain.
ISF Progress Reports
Tracking your ISF filings through progress reports ensures you’re on top of deadlines. You can identify delays or issues before they become problems and take corrective action early.
Conclusion
Be on time and accurate with ISF to stay compliant with CBP. Know the deadline, avoid mistakes and use technology to automate. With the right process, you can have smooth imports and a good relationship with CBP. Choose CargoEZ to make ISF filing easy.
FAQ
How do I find an agent who will file ISFs on my behalf?
To find an agent that will file the ISF on your behalf, please search either the Sea AMS list of service providers OR the ABI listing of software vendors
Does the ISF filer need to be located in the U.S.?
No, unless the filing is a Unified Entry filing.
How long does it take to receive the ISF Filing confirmation from CBP?
After the submission of your ISF Filing, you should receive the filing confirmation within 4-6 hours.
Is the Bill of Lading required for the ISF?
The Bill of Lading is not required to file the ISF as long as you have the ISF info sheet and Invoice. If you have the Bill of Lading please this would be useful to us to verify any info that is not clear on the ISF info sheet.
After my ISF is filed, how do I pick up my goods?
Once your ISF is filed, our customs clearing agent will work with you personally to clear customs and to advise you where the pick up location is. Trucking services is also available which the clearing agent can provide you a quote for this service.
Don't forget to share this blog!