FDA Prior Notice Explained
This guide covers the regulatory basis, exactly what information is required, the timing windows by transport mode, the difference between PNSI and ACE, what happens at the port after you file, exemptions, and the most common errors that cause shipment delays.
What Is FDA Prior Notice and Where Does It Come From?
FDA Prior Notice was established by Section 307 of the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (the Bioterrorism Act), which amended the Federal Food, Drug, and Cosmetic Act to give FDA advance warning of incoming food shipments. The implementing regulations are codified at 21 CFR Part 1 Subpart I (sections 1.276 through 1.285).
The requirement applies to all food and beverage shipments — including food for human consumption, food for animal consumption, dietary supplements, infant formula, and food ingredients — offered for import into the United States. Prior Notice gives FDA the opportunity to assess each incoming shipment against risk factors before it arrives at the port, enabling targeted examination of high-risk shipments while releasing low-risk ones efficiently.
Prior Notice is separate from, but closely connected to, FDA Food Facility Registration — every Prior Notice must include the FDA registration number of the manufacturing facility. A facility with a lapsed or cancelled registration cannot be correctly identified in a Prior Notice, making active registration a prerequisite for lawful food importation.
How Far in Advance Must Prior Notice Be Filed?
The required advance notice window depends on the mode of transportation and, for air shipments, the length of the flight. These windows are strictly enforced — filing even minutes after the applicable deadline can result in a shipment hold. The windows are set at 21 CFR 1.279:
| Mode of Transport | Condition | Advance Notice Required | Calculated From |
|---|---|---|---|
| Road (Truck) | All road shipments | 2 hours | Before arrival at U.S. border crossing |
| Rail | All rail shipments | 4 hours | Before arrival at first U.S. port |
| Air | Flight time < 4 hours | Before departure | Prior Notice must be filed before the aircraft departs |
| Air | Flight time 4 – 12 hours | At time of departure | Filed at or before wheels-up from the last foreign port |
| Air | Flight time > 12 hours | 4 hours | Before arrival at first U.S. port |
| Ocean (Sea) | All ocean shipments | 8 hours | Before arrival at first U.S. port |
| International Mail / Courier | All courier shipments | Before departure | Prior Notice must be filed before the package departs the origin country |
Best practice: file Prior Notice well before these deadlines — especially for ocean shipments. Unexpected port congestion, vessel schedule changes, or last-minute shipment data corrections need time to be addressed before the window closes.
What Information Must a Prior Notice Contain?
Under 21 CFR 1.281, a complete Prior Notice must include all of the following. Any missing or inaccurate field can trigger a hold:
| Required Field | Notes |
|---|---|
| Article of food identity | Common or usual name; FDA product code; lot or code number if available; quantity and packaging |
| Manufacturer name, address, and FDA registration number | Must be the actual producing facility, not a trading intermediary; registration must be active |
| Country of production | Where the food was grown, manufactured, or processed — not necessarily the country of shipment |
| Grower name and address | Required when known; particularly relevant for fresh produce and agricultural commodities |
| Shipper name and address | The entity sending the shipment from the foreign country |
| Country from which article is shipped | May differ from country of production for re-exports or transshipments |
| Importer of record name and address | The U.S. entity taking ownership or custody at time of entry; must match the CBP entry |
| Anticipated port of arrival | CBP port code; must match the customs entry |
| Anticipated arrival date and time | Must be accurate; updates required if schedule changes |
| Entry type | Consumption entry, warehouse entry, etc. |
PNSI vs. ACE — Two Ways to File Prior Notice
There are two FDA-approved submission portals for Prior Notice. Both satisfy the requirement; the choice depends on who is doing the filing and how your import workflow is structured.
PNSI — Prior Notice System Interface
prior-notice.fda.gov — FDA's dedicated Prior Notice portal. Used directly by importers, FDA compliance firms, and anyone filing Prior Notice independently of a customs broker. Filers create an FDA account and submit directly to FDA. PNSI provides a Prior Notice confirmation number immediately upon accepted submission. Maintains a searchable history of all Prior Notices filed under the account.
Best for: Importers working with a dedicated FDA compliance firm, importers who file their own Prior Notices, and situations where the filing must be handled separately from the customs broker.
ACE — Automated Commercial Environment
CBP's ACE portal — U.S. Customs and Border Protection's integrated trade processing system. Licensed customs brokers file customs entries through ACE, and Prior Notice can be incorporated into the entry filing. Prior Notice submitted through ACE is transmitted to FDA and satisfies the requirement. The broker receives the confirmation number as part of the entry processing.
Best for: Importers who handle all FDA compliance through their customs broker and want the Prior Notice filed as part of the entry submission process.
An important practical note: customs brokers are experts in CBP entry procedures but not always in FDA product codes, facility registration status, or FSVP requirements. Many importers use a customs broker for the CBP entry and a separate FDA compliance firm for Prior Notice — this ensures the FDA-specific fields (registration number, product code, manufacturer identity) are verified by someone with FDA regulatory expertise.
What Happens After Prior Notice Is Filed?
FDA Accepts the Prior Notice and Issues a Confirmation Number
If the Prior Notice submission is complete and accepted, FDA issues a unique Prior Notice confirmation number. This number must be provided to the carrier and customs broker and included in the shipment documentation. The confirmation number is the link between the Prior Notice on file and the arriving physical shipment. Without it in the shipping documents, the shipment may not be released even if the Prior Notice is correctly filed.
FDA's PREDICT System Evaluates the Shipment
FDA's PREDICT (Predictive Risk-based Evaluation for Dynamic Import Compliance Targeting) system analyzes the Prior Notice data against risk factors: the manufacturing facility's compliance history and FDA registration status; the product's risk profile and any product-specific Import Alerts; the country of origin's food safety track record; and historical data on the importer and broker. Most compliant shipments from registered facilities with clean histories receive a low risk score.
Shipment Arrives — CBP Processes the Entry
When the shipment arrives at the U.S. port of entry, CBP processes the customs entry and verifies that a valid Prior Notice is on file by matching the confirmation number. If the Prior Notice is missing, the confirmation number doesn't match, or key fields (especially the manufacturer's FDA registration number) don't align with the entry, CBP will flag the shipment for FDA review.
FDA Issues "May Proceed" or Selects for Examination
"May Proceed" — FDA's clearance status indicating the shipment is released for entry into U.S. commerce without physical examination. This is the outcome for the vast majority of compliant shipments. Examination — FDA selects a percentage of shipments for physical examination or sample collection. The shipment is held at the port while FDA conducts its review. Most examinations are resolved within a few business days at major ports. Refusal — If FDA finds violations (no Prior Notice, inaccurate Prior Notice, adulteration, misbranding, Import Alert), the shipment is refused admission under 21 U.S.C. § 381.
What Foods Are Exempt from Prior Notice?
Prior Notice is required for nearly all food shipments imported into the United States. The exemptions under 21 CFR 1.278 are narrow and specific:
Personal Consumption
Food carried by or accompanying a traveler entering the United States for personal use — not for commercial sale or distribution — is exempt from Prior Notice. This applies to food in a traveler's luggage or carry-on, not to commercially shipped food destined for a U.S. address.
U.S.-Origin Food Returned
Food that was manufactured entirely in the United States, shipped abroad, and is being returned to the U.S. without having been substantially transformed in the foreign country is exempt. The food must originate in the U.S. and be returned in its original form.
Transshipment (Non-Entry)
Food arriving at a U.S. port solely to transship to a foreign destination — without entering U.S. commerce — may be exempt. This is a narrow exemption; if any portion of the shipment will enter U.S. commerce, the transshipment exemption does not apply to the entire shipment.
Not Exempt: Samples and Low-Value Shipments
Commercial food samples require Prior Notice regardless of quantity or value. Low-value shipments, FBA replenishment orders, e-commerce parcels, and trial orders are not exempt. The personal consumption exemption does not apply to any food intended for commercial distribution, regardless of size.
Prior Notice Errors That Cause Shipment Holds
Wrong or Lapsed Registration Number
Using an incorrect FDA registration number — or the registration number of a facility whose Biennial Renewal has lapsed — is one of the most frequent causes of Prior Notice failures. FDA cross-references the registration number at submission. An inactive registration number will cause the Prior Notice to be flagged or rejected.
Filing After the Deadline
Filing Prior Notice after the advance notice window has closed — even by minutes for road shipments with the 2-hour window — results in a shipment hold. For ocean shipments, filing must be complete 8 hours before arrival. Late filings cannot be retroactively validated for an already-arrived shipment.
Manufacturer vs. Exporter Confusion
Listing the exporter, trading company, or broker as the manufacturer instead of the actual food-producing facility. Prior Notice requires the actual manufacturer — the facility that made, processed, or packed the food — not the commercial intermediary who arranged the sale. This is especially common in Hong Kong, Singapore, and Dubai re-export supply chains.
Mismatch With Customs Entry
The Prior Notice must match the CBP customs entry exactly — same port of arrival, same arrival date, same importer of record, same product description. Discrepancies between the Prior Notice and entry are flagged by CBP at arrival and will cause a hold while FDA reviews the inconsistency.
Incorrect FDA Product Code
FDA uses a specific product classification code system. Using the wrong product code misclassifies the shipment in FDA's PREDICT system and can affect the risk score assigned to the shipment. The correct code must reflect the actual nature of the food product, not just the broad category.
Not Filing for Samples or Small Shipments
Assuming small-quantity samples, trial orders, or low-value e-commerce parcels are exempt from Prior Notice. They are not — all commercial food shipments require Prior Notice. FDA's enforcement at international mail and courier facilities specifically targets unlabeled or undeclared food packages that lack Prior Notice submissions.
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Frequently Asked Questions — FDA Prior Notice
1. What is FDA Prior Notice?
FDA Prior Notice is a mandatory electronic submission required before any food shipment arrives at a U.S. port of entry, established under Section 307 of the Bioterrorism Act of 2002 and codified at 21 CFR Part 1 Subpart I. It gives FDA advance information about incoming food shipments so FDA can assess risk and determine whether to examine or release a shipment before it physically arrives.
2. Who is required to file FDA Prior Notice?
The U.S. importer of record is ultimately legally responsible for ensuring Prior Notice is filed accurately and on time. In practice, Prior Notice is filed by the importer, their customs broker through ACE, or a designated FDA compliance firm through PNSI. The foreign exporter is not the responsible party but must provide accurate product and manufacturer information to enable a correct filing.
3. How far in advance must Prior Notice be filed?
The required windows under 21 CFR 1.279: Road — 2 hours before arrival at the border; Rail — 4 hours; Air under 4 hours flight time — before departure; Air 4–12 hours — at time of departure; Air over 12 hours — 4 hours before arrival; Ocean — 8 hours before arrival. These are strictly enforced — late filings trigger an automatic hold.
4. What information is required in a Prior Notice submission?
Under 21 CFR 1.281: food identity (common name, FDA product code, quantity); the manufacturer's name, address, and active FDA registration number; country of production; shipper name and address; importer of record name and address; anticipated port of arrival; anticipated arrival date and time; and entry type. All information must exactly match the CBP customs entry.
5. What is the difference between PNSI and ACE for filing Prior Notice?
PNSI (prior-notice.fda.gov) is FDA's dedicated Prior Notice portal used by importers and compliance firms. ACE is CBP's integrated trade system used by licensed customs brokers as part of the entry filing. Both satisfy the Prior Notice requirement. PNSI is preferred when FDA-specific expertise (product codes, registration verification) is needed independently of the customs entry.
6. What is the Prior Notice confirmation number and why does it matter?
The confirmation number is issued by FDA after a Prior Notice is accepted. It must be given to the carrier and customs broker for inclusion in shipping documentation. CBP uses this number at arrival to verify that a Prior Notice is on file. A shipment arriving without a matching confirmation number in its documentation will be flagged immediately.
7. What happens after Prior Notice is filed?
FDA's PREDICT system analyzes the submission against risk factors. When the shipment arrives, CBP verifies the Prior Notice confirmation number. Most compliant shipments receive "May Proceed" — release without physical examination. If selected for examination, CBP holds the shipment while FDA reviews. If violations are found, FDA refuses admission under 21 U.S.C. § 381.
8. What products are exempt from FDA Prior Notice?
Exemptions under 21 CFR 1.278 are narrow: food for personal consumption carried by a traveler (not for commercial use); U.S.-origin food being returned without substantial transformation; and food transshipping through the U.S. without entering U.S. commerce. Commercial samples, low-value shipments, FBA orders, and e-commerce parcels are not exempt.
9. Is Prior Notice required for food samples?
Yes. Commercial food samples imported into the United States require Prior Notice regardless of quantity or commercial value. The personal consumption exemption applies only to food carried by a traveler for their own use — not to commercial samples shipped via courier or freight.
10. Is Prior Notice required for Amazon FBA food shipments?
Yes. Food shipments to Amazon FBA fulfillment centers require Prior Notice like any other commercial food import. An FDA hold triggered by missing or incorrect Prior Notice can result in Amazon refusing the delivery appointment, with the shipment potentially returned or destroyed at the importer's expense.
11. What happens if Prior Notice is not filed or is filed incorrectly?
A food shipment without a valid Prior Notice — or with an inaccurate one — will be refused admission at the U.S. port under 21 U.S.C. § 381. The shipment cannot be released until either a corrected Prior Notice is accepted before arrival (if time permits) or the shipment is exported back. Refused shipments incur storage fees, demurrage, and potential destruction costs for perishable goods.
12. Can Prior Notice be amended or cancelled after submission?
Prior Notice can be updated or cancelled through PNSI or ACE before the shipment arrives, within limitations. If material information changes — port of arrival, arrival date, product description — the Prior Notice should be updated. Once the shipment has arrived or been refused, the original Prior Notice cannot be amended.
13. Does Prior Notice need to be filed for every individual shipment?
Yes. A separate Prior Notice is required for each individual food shipment. Multiple products within the same shipment can be covered under one Prior Notice, but each distinct physical shipment requires its own submission. There is no standing or blanket Prior Notice that covers multiple shipments.
14. What is the relationship between Prior Notice and Food Facility Registration?
Both are required but serve different purposes. FDA Food Facility Registration registers the manufacturing facility permanently (with Biennial Renewal). Prior Notice is filed per shipment and must include the manufacturer's active FDA registration number. A lapsed registration makes it impossible to file a valid Prior Notice — making registration a prerequisite for importation.
15. What is PNSI and how do I access it?
PNSI — the Prior Notice System Interface — is FDA's dedicated Prior Notice portal at prior-notice.fda.gov. Filers create an FDA account and submit, update, or cancel Prior Notices directly. PNSI provides a confirmation number upon successful submission and maintains a filing history. It is the primary submission method for importers and FDA compliance firms filing Prior Notice independently.
16. How does Prior Notice relate to FSVP?
Prior Notice and FSVP (Foreign Supplier Verification Program) are separate but complementary requirements. Prior Notice is filed per shipment before arrival. FSVP is the importer's ongoing program to verify each foreign supplier meets U.S. food safety standards. Both are required simultaneously — FSVP compliance does not substitute for Prior Notice, and Prior Notice does not substitute for FSVP.
17. What is the regulatory basis for FDA Prior Notice?
Prior Notice is required under Section 307 of the Bioterrorism Act of 2002, codified at 21 CFR Part 1 Subpart I (sections 1.276–1.285). The Bioterrorism Act amended the Federal Food, Drug, and Cosmetic Act to establish both the Prior Notice and Food Facility Registration requirements as complementary food defense tools.
18. Does Prior Notice need to reflect the actual manufacturer or just the exporter?
Prior Notice must reflect the actual manufacturer — the facility that produced the food — not the exporter or trading intermediary. In Hong Kong, Singapore, Dubai, and similar re-export hubs, the exporter may not be the manufacturer. Prior Notice must name the actual production facility and include its active FDA registration number.
19. What is "May Proceed" and what does it mean?
"May Proceed" is FDA's designation that a food shipment has been reviewed through the Prior Notice and PREDICT risk-assessment process and is cleared for entry into U.S. commerce without physical examination. It does not mean FDA has approved the product — it means the Prior Notice information gave FDA no basis to hold the shipment. Most compliant shipments from registered facilities with clean histories receive "May Proceed."
20. Can Prior Notice be filed by the foreign exporter directly?
Yes — a foreign exporter can create a PNSI account and file Prior Notice directly. However, the U.S. importer of record remains legally responsible for accuracy and timeliness. Most foreign exporters rely on their U.S. importer, customs broker, or an FDA compliance firm to handle Prior Notice to ensure FDA-specific fields are verified correctly.
21. What are the most common Prior Notice errors?
Most common errors: filing after the required advance notice window; wrong or lapsed FDA registration number; listing the exporter instead of the actual manufacturer; mismatch between Prior Notice and customs entry (port, date, importer, product); incorrect FDA product code; and not filing for samples or small-quantity shipments assuming they are exempt.
22. Is Prior Notice required for food shipped through international mail or couriers?
Yes. Food shipped through FedEx, DHL, UPS, USPS International, or other courier services requires Prior Notice. FDA inspection facilities at major international mail and courier hubs process these shipments. Failure to file for courier-shipped food will result in the shipment being held at the FDA inspection facility.
23. Does Prior Notice apply to food transshipping through the U.S.?
Food transshipping through the U.S. to a foreign destination without entering U.S. commerce is generally exempt under 21 CFR 1.278. The exemption is narrow — if any portion of the shipment enters U.S. commerce, the exemption does not apply. Transshipment exemption eligibility should be confirmed before relying on it.
24. How does FDA Registration Assistance help with FDA Prior Notice?
FDA Registration Assistance prepares and submits accurate, compliant Prior Notices for food importers, manufacturers, and Amazon sellers across 135+ countries — verifying FDA registration status, confirming product codes, and filing within the required advance notice window. Same-day and urgent filings available. The firm also assists with Prior Notice corrections and coordinates with customs brokers to ensure documentation alignment.
25. How do I get started with Prior Notice filing through FDA Registration Assistance?
Contact FDA Registration Assistance at info@fdaregistrationassistance.com or call +1 (928) 275-8333. Provide your shipment details — product, manufacturer information, port of arrival, and expected arrival date. We will verify the FDA registration status, prepare the Prior Notice, and submit it within the required window.
