CBP customs hold durations — what data shows

Compiled notes from my own experience and from posts across forums to get a rough picture of how long CBP customs holds actually last. The variance is wide enough that any single experience is hard to generalize from.

Normal processing times

Standard customs clearance for small international packages delivered through the USPS mail stream typically takes one to three business days. This is the processing time for packages that are not flagged for additional inspection — they flow through automated sorting and scanning and receive routine handling.

Standard holds (5-15 days)

Packages held for routine inspection typically resolve within five to fifteen days. These holds happen when a package is flagged by automated systems for manual examination — either due to contents description, origin, weight profile, or random sampling. The vast majority of held packages in this category are released without any action beyond the physical inspection.

In aggregate, packages that clear within this window represent the largest category of delays. The typical pattern is: "In Customs" status for 7 to 12 days, then "Released from Customs" followed by rapid domestic transit to delivery.

Extended holds (15-30+ days)

Extended holds usually mean the package is under more thorough examination or that a determination about legality is taking time. Packages in this category either eventually clear (most do, even after extended holds) or are seized. The distinction between a long hold and a seizure is not visible in tracking data — both show as "In Customs" without updates until either a "Released" event or a seizure notice arrives.

What the data suggests

The 30-day threshold that most vendors use for reshipping matches the data reasonably well. Most packages that will clear have done so by 25 days. Waiting 30 days before treating a package as lost is conservative but reasonable. Requesting reshipping at 10 days because tracking has not updated is premature in almost every case.