Customs brokerage compliance workflows follow 5 stages before a US import clears CBP: ISF filing 24 hours pre loading at the origin port, AMS or e Manifest submission at vessel departure, ACAS filing for air cargo before loading, PGA screening for regulated commodities (FDA, EPA, USDA, DEA, CPSC), and entry summary submission within 10 working days of release with duty payment via Periodic Monthly Statement or ACH. Each stage carries its own filer, its own deadline, and its own penalty exposure. The 5 filings do not run sequentially; they run in parallel against different clocks tied to the shipment routing, and a delay on any one filing holds the shipment or triggers liquidated damages. This guide walks the workflow end to end, prices the penalties that hit a US importer or licensed broker in 2026, and lays out the RFP questions to ask before signing a customs software contract.
It is written for freight forwarders evaluating a customs broker software vendor or deciding whether to bring US customs filing in house. Every stage names the CBP or partner agency rule, the filing window, the party responsible, and the 2026 change if there is one.
Key Takeaways
The workflow below runs against a single US import shipment from origin loading through delivery. Each stage has a filer, a deadline tied to the shipment's physical movement, and a penalty for missing the window. In practice the 5 stages run in parallel: the customs broker starts entry summary preparation on the same day the ISF is transmitted, and PGA screening data is collected upstream from the shipper before booking. Sequencing them mentally as 5 discrete filings is the point; that is how CBP audits them.
The Importer Security Filing (ISF, also called 10+2) is the first customs filing on the US import calendar. It applies to ocean cargo only. The importer of record (or the licensed broker acting on the importer's behalf) transmits 10 data elements about the shipment plus 2 data elements from the ocean carrier to CBP through the Automated Broker Interface (ABI) or the ACE Secure Data Portal, no later than 24 hours before the container is loaded onto the vessel at the foreign port.
The 10 importer data elements are seller, buyer, importer of record number, consignee number, manufacturer or supplier, ship to party, country of origin, HTSUS (6 digit), container stuffing location, and consolidator. The 2 carrier data elements are vessel stow plan and container status messages, filed by the ocean carrier separately.
Two ISF variants exist. ISF-10 is the standard import filing described above. ISF-5 applies to Foreign Cargo Remaining On Board (FROB), Immediate Exportation (IE), and Transportation and Exportation (T&E) shipments, and requires 5 data elements only.
The penalty structure under 19 CFR 149.2(f) caps liquidated damages at $5,000 per violation, with a maximum of $10,000 per ISF transaction where multiple violations apply. Late filings, incomplete filings, and inaccurate filings each count as separate violations. CBP has issued more than 100,000 ISF penalty notices since the rule took effect, and mitigation is not automatic.
Watch out
A shipper who adds a container to a booking after the 24 hour pre loading window has closed forces the broker to file late or with placeholder data. Both routes trigger a $5,000 liquidated damages notice, capped at $10,000 per ISF transaction, and CBP mitigates case by case, not automatically.
The Automated Manifest System (AMS) is the CBP cargo manifest filing for arriving carriers. Ocean AMS is filed by the ocean carrier or a licensed NVOCC 24 hours before loading at the foreign port. Air AMS (now folded into the ACAS workflow) is filed by the air carrier. Rail AMS and Truck AMS (the e Manifest) cover land border crossings.
For a US import forwarder, the practical touch point is the House Bill of Lading (HBL) submission into Ocean AMS. If the forwarder is an NVOCC, it files the HBL manifest data alongside the ocean carrier's Master Bill (MBL) filing. If the forwarder is a booking party only, it hands house level data to the carrier for consolidation into the MBL filing.
Truck e Manifest is the equivalent workflow for cross border truck moves from Canada and Mexico. The carrier files ACE e Manifest to CBP at least 1 hour before arrival at the US border (30 minutes for FAST participants).
AMS penalties run $5,000 for a first violation and $10,000 for each subsequent violation under 19 USC 1436. Late, incomplete, or missing manifest filings block the vessel or truck from unlading at the US port until CBP releases the hold.
The Air Cargo Advance Screening (ACAS) rule requires shipment level data to CBP before an air cargo shipment is loaded onto a US bound aircraft at the foreign airport. The rule was piloted from 2010, made permanent via interim final rule in 2018, and substantially expanded by the Enhanced ACAS Interim Final Rule that took effect 21 November 2025. Strict enforcement of the expanded data set begins 21 November 2026.
Under the Enhanced ACAS rule, filers must transmit 5 mandatory data elements, up to 12 conditional data elements (based on shipment characteristics), and 4 additional data elements CBP added in the 2025 rulemaking. The 5 mandatory elements are shipper name and address, consignee name and address, cargo description, total quantity, and total weight. Conditional elements include air waybill number, master air waybill, house air waybill, piece count breakdown, and flight information.
Filers include air carriers, indirect air carriers (IACs), foreign freight forwarders, container freight stations, and importers or their brokers filing directly. The filing window is "as early as possible" and no later than the time the cargo is offered to the air carrier for loading. Late filings trigger a "Do Not Load" (DNL) hold from CBP.
Because the Enhanced rule adds a strict enforcement date of 21 November 2026, US bound air freight operators have a 12 month window in 2026 to bring their filing stack up to the expanded data set. Late adopters risk DNL holds that strand air freight at the origin gateway.
Watch out
Strict enforcement of the Enhanced ACAS data set begins 21 November 2026. Any US bound air filer whose stack does not transmit the 5 mandatory plus up to 12 conditional plus 4 additional data elements by that date risks a Do Not Load hold that strands cargo at the origin airport.
Partner Government Agency (PGA) screening applies to any US import that touches a regulated commodity. The 5 agencies a customs broker sees most often are the FDA (food, drugs, cosmetics, medical devices), the EPA (chemicals, pesticides, vehicles, engines), the USDA APHIS (plants, animals, animal products, wood packaging), the DEA (controlled substances, precursor chemicals), and the CPSC (consumer products subject to safety standards).
PGA data is filed through the PGA Message Set (PGA MS) inside the entry summary transmission, not as a separate filing. The broker collects the required data elements from the shipper (product code, registration number, intended use, prior notice for food) and transmits them via ACE alongside the CBP 7501 entry summary. The relevant PGA reviews the data and either releases the shipment, requests additional documentation, holds for exam, or refuses entry.
A PGA hold is functionally different from a CBP hold. CBP can release the goods for admissibility while a PGA (typically FDA) continues to hold them for prior notice review or a "May Proceed" ruling. The container remains at the terminal accruing demurrage until the PGA releases; the broker cannot pull the container until every agency in the entry summary has cleared.
Practical response: build a PGA data collection checklist for the shipper before booking, transmit PGA data with the entry summary rather than after CBP release, and instrument a PGA hold report inside the operations dashboard so the ops team knows within hours (not days) which shipments are stuck on which agency.
The entry summary (CBP Form 7501) is the final customs filing on the workflow. It is filed by the importer of record or the licensed broker within 10 working days of the shipment's release from CBP custody, together with the duty, taxes, and fees owed on the imported goods.
Three entry types cover most import volume. Type 01 (Consumption Entry) is the formal entry for goods valued over $2,500 destined for US commerce. Type 11 (Informal Entry) covers goods under $2,500 with simplified filing. Type 86 (Section 321 Low Value Shipment) covers de minimis shipments valued at $800 or less, filed by the express carrier or broker under CBP's Section 321 program.
Duty payment runs through two channels. Periodic Monthly Statement (PMS) consolidates all entries filed during a calendar month into one payment due on the 15th working day of the following month via ACH debit. Per entry payment settles duty and fees on each individual entry via ACH or check at the time of entry summary transmission. Large importers standardise on PMS; smaller filers pay per entry.
Late entry summary submission carries liquidated damages equal to the value of the merchandise plus duties and fees, capped at 2 times the duty amount for a first offense. Late duty payment triggers penalty interest at the federal short term rate plus 3 percentage points from the day payment was due.
The workflow above has 5 stages, but the failures that generate CBP penalty notices cluster in 4 places.
Late or missing ISF filings. By volume, this is the most common ISF penalty. A shipper adds a container to a booking after the 24 hour pre loading window has closed, and the broker either files late or files with placeholder data that the broker later corrects. Both trigger a $5,000 liquidated damages notice under 19 CFR 149.2(f), and CBP mitigates the penalty case by case, not automatically.
Inaccurate HTSUS classification on entry summary. The importer of record is legally responsible for correct HTSUS classification. A misclassified entry that underpays duty triggers a demand for the underpaid amount plus interest, and in cases where CBP finds gross negligence or fraud, additional penalties of up to 4 times the loss of revenue under 19 USC 1592.
Missing PGA data on regulated goods. A shipment released by CBP with an FDA prior notice failure sits at the terminal accruing demurrage while the broker scrambles to file. The broker's exposure is not a CBP penalty here; it is the demurrage bill the importer refuses to pay, plus the reputation cost.
ACE portal outages during peak filing windows. ACE processes more than 40 million entry filings per year. Portal outages are rare but hit filers hardest on quarter end reconciliation days. Brokers with only web portal access, no EDI fallback, lose filing windows during outages. The fix is EDI transaction set support (ANSI X12 309 for AMS, 350 for entry, 875 for release) that transmits directly to CBP without portal dependency.
Modern customs broker software automates 3 of the 5 workflow stages end to end, and orchestrates the other 2. The 3 fully automated stages are ISF transmission, AMS or e Manifest transmission, and entry summary transmission via ACE ABI. The 2 orchestrated stages are ACAS filing (typically routed through an air carrier or IAC filing partner) and PGA screening (data collected in the platform, transmitted with the entry summary).
The feature framework a buyer should evaluate has 4 layers.
Filing engine. ACE certified ABI transmission for ISF, AMS, entry summary, and PGA Message Set; support for all common entry types (01, 11, 86); automatic HTSUS lookup from the product master; duty and fee calculation with landed cost preview.
Filing partner integration. Ocean AMS via a named filing partner disclosed in the vendor contract; Air ACAS via a named partner or direct filing capability; AES via AESDirect for US exports; foreign customs modules where the vendor supports non US markets (Japan AFR, China Customs, EU ICS2).
Exception and audit layer. Automatic rejection routing when CBP returns an error message; audit trail on every filing showing who filed what and when; PGA hold status by shipment; ISF penalty exposure report showing pending liquidated damages notices.
Data model. One shared shipment record across ISF, AMS, ACAS, PGA, and entry summary so the ops team does not rekey the same importer number, HTSUS code, or manufacturer address into 5 systems.
A buyer running an RFP on customs broker software should ask 10 questions before booking a demo. The questions below separate vendors that market compliance from vendors that actually file it.
For freight forwarders evaluating GoFreight against the RFP framework above, the customs capability facts on the current platform are as follows.
The customs workflow lives inside Customs Management Software for Forwarders on the same shipment record as booking, tracking, and billing, so the ops team files ISF, AMS, and entry summary without rekeying shipment data across systems.
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See how GoFreight files ISF, AMS, AES, and Japan AFR on one shipment record.
The 5 stages are ISF (10+2) filing 24 hours before ocean cargo is loaded at the foreign port, AMS or e Manifest submission at vessel or truck departure, ACAS filing for air cargo before loading, PGA screening for regulated commodities (FDA, EPA, USDA APHIS, DEA, CPSC) transmitted with the entry summary, and entry summary submission on CBP Form 7501 within 10 working days of release with duty paid via Periodic Monthly Statement or ACH. Each stage has its own filer, its own deadline, and its own penalty exposure, and the 5 stages run in parallel against different clocks tied to the shipment routing.
ISF is the Importer Security Filing, also known as 10+2. It applies to ocean cargo imported into the US. The importer of record or the licensed broker transmits 10 data elements about the shipment plus 2 data elements from the ocean carrier through ACE ABI no later than 24 hours before the container is loaded onto the vessel at the foreign port. ISF-10 is the standard variant; ISF-5 applies to FROB, IE, and T&E shipments and requires 5 data elements only. Late, incomplete, or inaccurate filings carry $5,000 per violation in liquidated damages under 19 CFR 149.
AMS is the Automated Manifest System, the CBP filing for the arriving carrier's cargo manifest. Ocean AMS is filed by the ocean carrier or NVOCC 24 hours before loading; Rail AMS covers rail crossings; Truck e Manifest covers land border truck moves. AMS is a carrier or NVOCC filing describing the cargo on the conveyance; ISF is an importer or broker filing describing the commercial transaction (buyer, seller, manufacturer, HTSUS). Both file to CBP through ACE, but they answer different questions and use different data sets.
ACAS is the Air Cargo Advance Screening rule. It requires shipment level data to CBP before air cargo is loaded onto a US bound aircraft at the foreign airport. Filers include air carriers, indirect air carriers, foreign freight forwarders, container freight stations, and importers or their brokers filing directly. The Enhanced ACAS Interim Final Rule took effect 21 November 2025, expanded the mandatory data set to 5 elements plus up to 12 conditional and 4 additional elements, and begins strict enforcement 21 November 2026. Late filings trigger a Do Not Load hold that strands cargo at the origin airport.
PGA stands for Partner Government Agency. The 5 US PGAs a customs broker sees most often are the FDA (food, drugs, cosmetics, medical devices), the EPA (chemicals, pesticides, vehicles, engines), the USDA APHIS (plants, animals, animal products, wood packaging), the DEA (controlled substances and precursor chemicals), and the CPSC (consumer products subject to safety standards). PGA data is transmitted through the PGA Message Set inside the entry summary via ACE, not as a separate filing. A PGA hold can keep cargo at the terminal accruing demurrage even after CBP has released the shipment for admissibility.
The entry summary (CBP Form 7501) is due within 10 working days of the shipment's release from CBP custody. Duty, taxes, and fees are paid at the same time via Periodic Monthly Statement (PMS, consolidated ACH payment on the 15th working day of the following month) or per entry via ACH or check. Late entry summary submission carries liquidated damages up to 2 times the duty amount for a first offense, and late duty payment triggers penalty interest at the federal short term rate plus 3 percentage points.
Under 19 CFR 149.2(f), each ISF violation carries $5,000 in liquidated damages, with a cap of $10,000 per ISF transaction where multiple violations apply on the same filing. Late filings, incomplete filings, and inaccurate filings each count as separate violations. CBP has issued more than 100,000 ISF penalty notices since the rule took effect in 2009, and mitigation is granted case by case, not automatically. A broker with a history of late filings loses mitigation credit on subsequent notices.
The Enhanced ACAS Interim Final Rule took effect 21 November 2025 and expanded the ACAS filing data set from the earlier pilot standard. The new set requires 5 mandatory data elements (shipper name and address, consignee name and address, cargo description, total quantity, total weight), up to 12 conditional data elements based on shipment characteristics, and 4 additional data elements CBP added in the 2025 rulemaking. Strict enforcement of the expanded data set begins 21 November 2026, giving filers a 12 month window in 2026 to update their systems and filing partner integrations.
ICS2 is the EU Import Control System 2, an EU pre arrival security data programme. It does not touch US customs filings directly. However, forwarders that route freight in both directions carry both compliance stacks: ISF, AMS or ACAS, PGA, and entry summary on US inbound; and ENS via ICS2 Release 3 (complete 1 September 2025, covering air, maritime, road, and rail) on EU inbound. The 2 workflows run against different clocks and different data sets, and consolidating both into one operations platform reduces cross border filing errors.
Ask 10 questions: (1) ACE ABI certification year and which transaction sets are certified; (2) filing coverage by mode and whether each is native or via a named partner; (3) which US filings the vendor explicitly does not support; (4) PGA Message Set coverage by agency; (5) how CBP rejections surface in the ops dashboard; (6) whether the platform generates an ISF penalty exposure report; (7) which ANSI X12 EDI sets are supported (309, 350, 358, 810, 875); (8) data migration path from the legacy broker platform; (9) sample audit trail per filing; (10) pricing model (per filing, per shipment, per user, or volume tier) with overage terms.
GoFreight files ISF (both ISF-10 and ISF-5) native in product via integrated filing partners, Ocean AMS via an integrated filing partner inside the GoFreight workflow, and AES for US Ocean Export and Air Export via AESDirect. Japan AFR is native for Japan bound air cargo from the Air Export house. ACE (US CBP air manifest) is not supported and not currently scheduled on the roadmap; forwarders that need US air manifest filing today route it through an air carrier or IAC partner outside GoFreight. The customs workflow shares one shipment record with booking, tracking, and billing so the ops team does not rekey data across systems.
Yes for the ISF and AMS side, with a caveat on air. Modern customs broker software transmits ISF and Ocean AMS via ACE ABI natively or through named filing partners, and handles entry summary and PGA Message Set on the same shipment record for both ocean and air modes. Air imports also require ACAS filing before loading at the foreign airport, and not every platform files ACAS in product; some route the ACAS transmission through an air carrier or indirect air carrier filing partner. The RFP question is which platforms transmit ACAS directly and which route it through a partner, because the workflow visibility differs.