A shipment release is the authorization a customs agency gives for imported goods to leave its custody so the carrier can deliver them. In the United States that agency is U.S. Customs and Border Protection (CBP), and release happens after the shipment’s entry data is accepted, any exam is finished, and duties are paid or secured.
Until a package is released, it sits in customs custody no matter how fast the service you paid for. That’s why “released by customs” or “clearance complete” is the tracking update international shippers watch most closely.
What does shipment release mean in customs?
Shipment release means customs has finished reviewing a shipment and allows it to move on to final delivery. Every international package goes through the same basic stages: the exporter declares the contents, the carrier sends that data ahead, the destination customs agency reviews it, and duties or taxes are assessed before release.
The term also has a freight meaning. In ocean and air cargo, a “carrier release” or “freight release” is the carrier’s separate permission to hand cargo to the consignee once freight charges are paid and the original bill of lading is surrendered. A container needs both a customs release and a carrier release before it can leave the terminal.
How does the customs release process work?
Customs release works in four steps, and a problem at any one of them stops the package.
- Export declaration. The shipper completes the customs form or commercial invoice with the contents, value and origin. USPS requires a customs form on most international shipments, with a specific value and description for each item.
- Advance data. The carrier transmits the declaration electronically so the destination agency can screen it before the package lands.
- Entry and review. A broker, carrier or importer files the entry. CBP says the importer of record has up to 15 days after arrival to file for cargo release, and customs may hold a package for document review or a physical exam.
- Duties and release. Customs assesses duties and taxes, and the package is released once they’re paid or secured. For U.S. formal entries, the entry summary (CBP Form 7501) and estimated duties are due within 10 days of release.
Parcel carriers usually handle steps two through four for you. UPS clears most imports through its own brokerage, and USPS hands inbound mail to CBP at its international service centers, so most small shipments are released without the sender filing anything beyond the customs form.
Do all international packages need a shipment release?
Yes. Every package crossing a border passes through customs, and since August 29, 2025 every commercial import into the United States also owes duty. CBP suspended duty-free de minimis treatment for all countries on that date under Executive Order 14324, regardless of value, origin or how the goods were shipped.
Shipments outside the postal network now need a formal or informal entry in CBP’s ACE system, filed by a qualified party such as a carrier or customs broker. Postal shipments follow a separate duty-collection process run by carriers and other qualified parties, so the release still depends on duties being collected first.
Other countries set their own rules. USPS notes, for example, that new import duties and requirements may apply from July 1, 2026 to packages up to €150 sent to countries that follow EU customs rules, so check the destination before you ship. Our USPS international shipping guide explains the services and transit times for each USPS option.
What tracking updates show a shipment release?
Tracking shows the release stage with customs-specific scans. Wording varies by carrier, but the sequence is consistent.
| Tracking stage | What it means | What to do |
|---|---|---|
| Arrived at customs or import scan | The destination agency has the package | Nothing yet; review usually starts automatically |
| Clearance in progress | Customs is reviewing the entry data | Watch for a request for documents or payment |
| Held in customs | Customs needs documents, an exam or duty payment | Respond to the carrier or broker quickly |
| Released or clearance complete | Customs has authorized delivery | Normal domestic delivery resumes |
UPS tracking often sits at “Clearance in progress” while its brokers work the entry, and our guide to Clearance in Progress UPS explains how long that stage usually lasts. If a package moves past release and then stalls, the UPS delivery exception steps cover the most common fixes.
What delays a shipment release?
Most release delays trace back to the paperwork rather than to customs workload. The usual causes are:
- Vague descriptions. “Gift,” “parts” or “samples” force a manual review. USPS asks for what each item is, what it’s made of and what it’s for.
- Missing or mismatched values. Each item needs its own value, and the total must match the invoice.
- Unpaid duties or taxes. Release waits until whoever owes the duty pays it or authorizes payment.
- Restricted goods. Food, plants, medicine, batteries and other regulated items may need permits or certificates from another agency.
- Bad recipient details. Customs and the carrier need a full name, address and contact number to reach the importer.
USPS warns that packages failing the destination country’s customs requirements can be returned, discarded or destroyed. A missing international package that never clears should be traced right away, and the steps in USPS tracking for a lost package show how to start that search.
How can you speed up shipment release?
Complete, consistent paperwork and a clear plan for duties are the two things that speed up release most.
- Describe every item precisely, including material and use, and let USPS assign the HS code when you ship through its online tools.
- Declare the real transaction value. Customs agencies compare declared values against market data.
- Decide who pays duties before you ship. Prepaying duties for the recipient, as with DDP shipping, removes the most common reason a package waits at customs.
- Use the same descriptions everywhere, so the commercial invoice, customs form and packing list match.
- Choose a service with built-in brokerage for time-sensitive goods, and compare carriers in our roundup of shipping services and solutions.
Service choice also affects cost. Our guides to the cheapest international shipping options, cheapest international shipping rates, USPS international shipping rates by country and the cost to ship to Canada compare the main options, and the delivery services hub covers domestic alternatives. ParcelPath offers up to 89% off USPS and up to 85% off UPS international labels with no subscription or per-label fee; compare live rates in the ParcelPath rate calculator, or start from our USPS shipping overview.
Frequently Asked Questions
What does shipment release mean on tracking?
A shipment release on tracking means customs has authorized the package to leave its custody for delivery. It follows the customs review, any inspection, and payment of duties or taxes. After a “released” or “clearance complete” scan, the package moves into the destination carrier’s normal domestic network and delivery timing resumes.
How long does shipment release take?
There’s no fixed time. Packages with complete, accurate data and prepaid duties often clear quickly, while vague descriptions, unpaid duties or restricted items can hold a package for days or longer. For U.S. imports, CBP gives the importer of record up to 15 days after arrival to file for cargo release.
Why is my shipment not released by customs?
Customs usually holds a shipment because it needs more information, a duty payment or an inspection. Common triggers are vague item descriptions, missing values, unpaid duties, and goods that need permits from another agency. Contact the carrier or broker named in tracking, supply what they ask for, and pay any duties owed to get the release.
Does every package to the U.S. need customs release after de minimis ended?
Yes. CBP suspended duty-free de minimis treatment for all countries on August 29, 2025, so commercial imports into the United States now owe applicable duties regardless of value. Non-postal shipments need an entry filed in ACE, and postal shipments have duties collected through carriers or other qualified parties before release.
Sources
- U.S. Customs and Border Protection: Entry Summary and Cargo Release
- U.S. Customs and Border Protection, CSMS #66065494: Guidance on Executive Order 14324, suspension of duty-free de minimis treatment (August 2025)
- USPS: International Customs Forms
Part of our FOB meaning guide. Related: DDP shipping.
