INTERNATIONAL TRADE LAW
How to File Imports Through CBP's ACE System
In the United States, “automated import systems” means one thing: the Automated Commercial Environment (ACE), CBP’s single electronic window for filing and processing every import. If you bring goods into the country, your data flows through ACE — whether you file it yourself or your customs broker does. Understanding how ACE works helps you supply the right information, clear cargo faster, and stay out of trouble with the agencies that screen your shipments.
What ACE is
ACE is the system U.S. Customs and Border Protection uses to collect and process trade data for goods entering and leaving the country. It is the official “single window” — a single access point that connects CBP, the trade community, and the many other federal agencies that regulate imports.
That single-window design is the key point. ACE links roughly 49 partner government agencies (PGAs) — including the FDA, USDA, EPA, CPSC, FCC, and DOT — so that data which once went to each agency on separate paper forms is now transmitted electronically in one place. When your product is regulated by one of those agencies, its required data (the “PGA message set”) travels with your customs entry through ACE.
ABI: how entries actually get filed
You do not key entries into ACE through a website for most transactions. Commercial entries are transmitted through the Automated Broker Interface (ABI) — the approved electronic channel for filing entry and entry summary data into ACE. ABI is used by licensed customs brokers and by importers who self-file, running CBP-certified software that formats data to CBP’s technical specifications.
There is also an ACE Secure Data Portal, a web account that importers, brokers, and others use to view entry data, run reports, manage their account, and respond to CBP. Think of it this way: ABI is the pipe that carries your filings into ACE; the portal is the dashboard where you monitor and manage your activity.
| Tool | What it does | Who uses it |
|---|---|---|
| ACE | CBP’s central import/export processing system and single window | CBP, PGAs, the trade |
| ABI | The approved electronic method for filing entry and entry summary data | Brokers and self-filing importers |
| ACE Portal | Web account for viewing data, reports, and account management | Importers, brokers, sureties |
| PGA message set | Partner-agency data filed with the entry | Importers of regulated goods |
How an import moves through ACE
For a typical commercial shipment, the flow is straightforward once the pieces are in place:
- Cargo release. Before or upon arrival, entry data is transmitted through ABI so CBP can decide whether to release the cargo. Any applicable PGA data is filed at the same time.
- Partner-agency review. If the FDA, USDA, or another agency regulates the goods, ACE routes the relevant data to that agency, which may release, review, or hold the shipment.
- Entry summary. After release, you file the entry summary (the data historically captured on CBP Form 7501), declaring classification, value, and the duties owed.
- Payment and post-release. Duties, taxes, and fees are paid (commonly through periodic monthly statements), and the entry later liquidates — CBP’s final calculation of what was owed.
Who files, and what you stay responsible for
Most importers hire a licensed customs broker to file in ACE; brokers have the software and credentials and do this all day. Larger or higher-volume importers sometimes become ABI self-filers. Either way, automation does not change the legal bottom line: you are still the importer of record, and you still owe CBP reasonable care on classification, valuation, and admissibility. ACE makes filing faster and more accurate, but it transmits whatever you tell it — so the quality of your data, and your oversight of whoever files it, is what keeps you compliant. The same applies on the way out: U.S. export data is filed through ACE as well, which we cover in how to export products from the US.
FAQ
What is ACE? The Automated Commercial Environment, CBP’s centralized electronic system for processing imports and exports. It is the U.S. “single window” connecting CBP, partner government agencies, and the trade community.
Do I have to use ACE to import? In practice, yes. Commercial import data is processed through ACE, and entries are filed electronically via the Automated Broker Interface. Paper filing is no longer the norm.
What is the difference between ACE and ABI? ACE is the underlying system. ABI is the approved electronic method for transmitting entry and entry summary data into ACE. Brokers and self-filing importers use ABI software to file.
Do I need a customs broker to file in ACE? No, but most importers use one. Self-filing requires CBP-certified ABI software and meeting CBP’s technical requirements, which is why brokers handle the majority of entries.
Importing into the US? Reidel Law Firm prepares flat-fee Import/Export Compliance Memos covering entry requirements, classification, and partner-agency clearances — with direct access to the trade attorney handling your matter. Request a compliance memo →
