Late ISFs
For Late ISFs, process is Importer Security Filing (ISF); jurisdiction is United States (CBP); deadline is at least 24 hours prior to the vessel departure, recorded from its source on 2026-08-11.
- Step
- Late ISFs verified
- Process
- Importer Security Filing (ISF) our reading
- Jurisdiction
- United States (CBP) our reading
- Deadline
- at least 24 hours prior to the vessel departure verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
H. Late ISFs 1. If an ISF is filed the day of the vessel sail date, will there be a fine or enforcement of some kind? Because the ISF is required at least 24 hours prior to the vessel departure, a filing that is completed the same day the vessel sails will be considered a violation and it can be expected that CBP will issue a claim for an untimely filing. CBP uses the vessel departure date minus 24 hours to measure timeliness.
— cbp.gov, retrieved 2026-08-11
Source
- cbp.govhttps://www.cbp.gov/sites/default/files/assets/documents/2018-Nov/Updated%20ISF%20FAQ%20FINAL%2011282018.pdf