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AMS and ACE Filing Explained: Carrier and Customs Manifest Systems

By ANKPOST Operations Team · 2026-06-12

What are AMS and ACE filings?

The Automated Manifest System (AMS) is the electronic cargo manifest ocean carriers and NVOCCs submit to CBP before a vessel loads US-bound cargo, while the Automated Commercial Environment (ACE) is the broader CBP platform through which importers and brokers file entry, ISF, and other compliance data. Independent dispatch data indicates that AMS manifest mismatches — incorrect container numbers or consignee names — account for a recurring share of "in-bond" hold flags seen at Los Angeles/Long Beach terminals, adding 1-2 days to release timelines. Field-level tracking shows ACE entry summary rejections for HTS code mismatches are most common on the first filing for a new SKU.

In this article

Cost structure / standard tiers

AMS filing itself is typically bundled into carrier or NVOCC documentation fees, while ACE-related filings carry separate broker and bond costs.

Filing/Fee Who Files Typical Cost
AMS manifest Carrier/NVOCC Included in ocean freight (sometimes $25-50 documentation fee)
ACE entry filing Customs broker $75-150 per entry
AMS late/inaccurate manifest penalty Carrier (CBP-assessed) $5,000-10,000 per violation
ACE entry correction (post-summary) Customs broker $50-100 per correction
Manifest discrepancy resolution Broker/importer time cost Variable, 1-3 day delay typical

These figures reflect standard West Coast brokerage practice and vary by entry complexity and broker contract terms.

Risk mitigation / operational guidance

Confirm the NVOCC or carrier has submitted the AMS manifest at least 24 hours before vessel loading, since US-bound cargo cannot load without it under the 24-hour rule. Cross-check container numbers, seal numbers, and consignee details on the AMS filing against the bill of lading before departure — mismatches are far cheaper to fix at origin than after arrival. Work with a broker who files ACE entries electronically and maintains a continuous bond, avoiding single-entry bond delays for routine shipments. Keep HTS classifications validated in advance for repeat SKUs to reduce ACE entry rejections on first-time filings.

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