AMS Declaration is a mandatory core customs filing for all ocean shipments from China to the USA. It directly affects loading, clearance and pickup, and is one of the most error-prone procedures for exporters and freight forwarders.

1. What is AMS Declaration?

AMS stands for Automated Manifest System.

It is the U.S. Customs mandatory electronic manifest filing, commonly known as 24-Hour Rule Manifest Declaration.

All cargo destined to the USA, including transshipments via the USA, must be filed to CBP at least 24 hours before loading. Failure to file on time will result in refusal of loading and heavy fines.

AMS is submitted by carriers or licensed NVOCCs to enable CBP to conduct security screening in advance.

2. Difference Between AMS and ISF Declaration

AMS: Manifest filing by shipping line — focuses on cargo and transport details.

ISF: Importer Security Filing (10+2) by importer/forwarder — focuses on supplier, buyer and cargo chain.

Both are required; they are separate and equally important.

3. AMS Filing Deadline (Strict Rule)

Must be submitted and accepted by CBP at least 24 hours before loading

Late filing: not allowed to load

Missing filing: fine from USD 5,000 to 10,000 per container

AMS cutoff is earlier than closing cutoff

4. Required Information for AMS Filing

All information must be true, accurate and fully consistent with the Bill of Lading.

Required details include:

Carrier SCAC Code

Master Bill of Lading Number

Vessel Name & Voyage Number

Container Number & Seal Number

Cargo Description (specific English description)

Quantity, Gross Weight, Measurement

Shipper full name, address, phone

Consignee full name, address, phone (real and valid)

Notify Party information

Port of Loading, Port of Discharge

Place of Receipt, Place of Delivery

HS Code (required on most routes)

Actual Country of Origin

5. Who Submits AMS?

FCL: submitted by shipping line

LCL: submitted by LCL operator / freight consolidator

Licensed NVOCC may submit on their own

Forwarders provide information but do not send AMS directly. However, any inaccuracy caused by wrong information will be charged to the shipper/forwarder.

6. Consequences of AMS Errors

Cannot load on board

Port storage, detention and rerouting charges

CBP fines starting at USD 5,000

Marked as high-risk cargo, inspection rate increases sharply

B/L must be corrected with amendment fees

Damage to importer’s customs credit

7. Top 10 Most Common AMS Mistakes

Incomplete, fake or incorrectly formatted shipper/consignee address

Vague or mismatched cargo description

Quantity, weight, measurement inconsistent with B/L

Wrong container or seal number

Incorrect destination port code

Wrong or missing Country of Origin

Information mismatch between AMS and ISF

Submitted after 24-hour deadline

Invalid consignee or non-operational address

Failure to update AMS after vessel change

8. AMS Amendment & Re-filing Rules

Amendments allowed before loading only

Frequent amendments may trigger CBP review

Amendments after loading: extremely high risk of fines

Vessel change, port change, container change: must update AMS

9. Standard AMS Fees (Industry Common)

AMS filing fee: USD 25–35 per shipment

Amendment fee: USD 40–80 each time

Re-filing fee: USD 30–50 each time

These are transparent, legal and standard logistics charges.

10. Summary for China to USA Shipping

AMS is mandatory, strict and zero-tolerance.

Three key rules:

File ≥24 hours before loading

100% accurate and consistent with B/L

Late, wrong or missing filing = heavy penalties

With correct preparation and timely submission, AMS will be smoothly approved.