The documents required for import customs clearance in the USA depend on the value of your shipment and what you’re bringing in, but a formal commercial entry almost always requires the same core set: a commercial invoice, a packing list, a bill of lading or air waybill, CBP Form 3461, CBP Form 7501, and a customs bond on Form 301. Ocean shipments add an Importer Security Filing. Regulated products (food, chemicals, plants, vehicles, and more) require permits or certifications from the relevant federal agency on top of the CBP paperwork. Missing, late, or inaccurate documents can cost you penalties, storage fees, or the cargo itself.
Which Entry Type Applies to Your Shipment
Before pulling together paperwork, figure out what kind of entry you’re filing, because the document set scales with the shipment.
The old $800 de minimis exemption that let low-value shipments enter with minimal paperwork is effectively gone. A 2025 executive order suspended duty-free de minimis treatment for virtually all shipments regardless of value or origin, and a February 2026 order continued the suspension.1The White House. Suspending Duty-Free De Minimis Treatment for All Countries A narrow, temporary carve-out remains for items sent through the international postal network, and even that ends once CBP confirms it can collect duties on mail parcels.
What matters now is the line between informal and formal entry. Shipments valued at $2,500 or less generally qualify for informal entry, which uses simplified paperwork and no customs bond. Anything above $2,500 requires formal entry: the full set of CBP forms, a bond, and detailed commercial documentation. Certain categories (textiles, some food products, quota-restricted items) require formal entry regardless of value.
Commercial Invoice
The commercial invoice is the document CBP uses to classify your goods and calculate what you owe. Federal regulations require it to describe the merchandise in enough detail for the agency to do that work, and to include the parties to the transaction, a description of each item, the purchase price in the currency of sale, the country where the goods were produced, and the quantities involved.2eCFR. 19 CFR 141.86 – Contents of Invoices and General Requirements It must be in English or come with an English translation.
Get this document right. Misrepresenting value, quantity, or description exposes you to penalties under 19 U.S.C. 1592. A fraudulent violation can reach the full domestic value of the merchandise. Even a negligent error, an honest classification or valuation mistake, can cost up to twice the duties CBP would otherwise have collected.3Office of the Law Revision Counsel. 19 U.S. Code 1592 – Penalties for Fraud, Gross Negligence, and Negligence
Packing List and Transport Documents
The packing list backs up the invoice with the physical detail of the shipment: weight, dimensions, and quantity per carton or pallet. If it doesn’t match what an inspector finds, expect a deeper examination, days of delay, and added fees.
Transport documents come from the carrier. Ocean freight moves under a bill of lading; air freight under an air waybill. Both are contracts of carriage, and the bill of lading also functions as a title document for the goods. They have to list the correct consignee and notify party so the carrier can legally release cargo once CBP authorizes it.
CBP Entry Forms
Form 3461: Entry/Immediate Delivery
Form 3461 is the initial filing that tells CBP the goods have arrived and you want them released. It carries the port of entry code, the entry type, and the Harmonized Tariff Schedule classification for your merchandise.4U.S. Customs and Border Protection. CBP Form 3461 – Entry/Immediate Delivery The HTS code sets your duty rate. The system runs up to 10 digits, with the 8-digit level driving the rate itself and the last two digits used for statistical tracking.5United States International Trade Commission. About Harmonized Tariff Schedule The wrong code means overpayment or underpayment, and underpayment brings the penalty exposure noted above.
Form 7501: Entry Summary
Once your goods are released, Form 7501 is the final accounting of duties, taxes, and fees owed on the shipment.6U.S. Customs and Border Protection. CBP Form 7501 – Entry Summary It includes the Merchandise Processing Fee, which CBP charges on most formal entries and adjusts periodically; confirm current minimum and maximum amounts with CBP before you file. The entry summary draws from your commercial invoice, so any inconsistency between the two is a quick way to invite an audit.
Customs Bond (Form 301)
You cannot file a formal entry without a customs bond. Form 301 is a financial guarantee that you will pay all duties, taxes, penalties, and liquidated damages that come due.7U.S. Customs and Border Protection. CBP Form 301 – Customs Bond You have two choices:
- A single entry bond covers one shipment. The bond amount must equal the total value of the merchandise plus all duties, taxes, and fees.
- A continuous bond covers all your entries for a one-year period and auto-renews. Regular importers usually take this route to avoid bonding each shipment separately.
You buy a bond through a surety company, and the premium is a fraction of the face value. It typically takes a few business days to put one in place, so arrange it before your first shipment arrives.
Importer Security Filing (Ocean Freight Only)
If your goods are moving by ocean vessel, you owe one more filing that catches first-time importers: the Importer Security Filing, known as ISF or “10+2.” It must be submitted at least 24 hours before the cargo loads onto the vessel at the foreign port, not 24 hours before U.S. arrival. That means your shipment details need to be locked down well before the container leaves the exporting country.
The importer supplies 10 data elements (manufacturer name and address, seller, buyer, ship-to party, country of origin, HTS number, and others), and the carrier supplies two. Filing late, filing inaccurate data, or skipping the ISF can bring penalties of $5,000 per shipment, with cumulative violations reaching $10,000. CBP can also hold the cargo at the terminal, refuse to issue an unloading permit, or raise your future inspection rate. Air freight is not subject to ISF.
Agency Permits and Certificates
CBP clearance is only part of the picture for regulated products. Depending on what you’re importing, one or more Partner Government Agencies may require their own filings before the goods can move into domestic commerce.
- FDA oversight covers food, cosmetics, medical devices, pharmaceuticals, and dietary supplements. Food shipments specifically require a Prior Notice submission before arrival.
- USDA oversight covers plants, seeds, animals, meat, and wood packaging materials. Wood packaging must meet international treatment standards, and agricultural goods often need a phytosanitary certificate from the exporting country.
- EPA oversight covers vehicle emissions and chemical substances under the Toxic Substances Control Act.
The TSCA piece trips up importers who don’t consider themselves chemical importers. If any chemical substance is in your shipment, you file either a positive certification (confirming TSCA compliance) or a negative certification (confirming the chemicals are exempt because they fall under another framework, such as pesticides or pharmaceuticals). These certifications go through the Automated Commercial Environment (ACE) system alongside your CBP entries.8US EPA. TSCA Requirements for Importing Chemicals Under TSCA, “manufacture” includes import, so bringing in a new chemical substance can trigger premanufacture notice requirements even if you didn’t produce it.
Certificate of Origin
If your product qualifies for reduced or eliminated duties under a trade agreement, you need a certificate of origin to claim the preference. The certificate confirms that the goods satisfy the agreement’s rules of origin (regional value content, tariff shift, or other criteria) and lists the HTS code and the qualifying rule. Without a valid certificate, you pay the full general duty rate, which can be a meaningful cost difference.
Filing Deadlines Through ACE
Every trade-related filing runs through ACE, CBP’s centralized digital portal. The deadlines are firm:
- Form 3461 must be filed within 15 calendar days of the goods arriving at a U.S. port of entry.
- Form 7501, with estimated duties, must be filed within 10 working days after the date of entry.9eCFR. 19 CFR Part 142 – Entry Process
Miss either deadline and you face liquidated damages against your customs bond while the cargo sits at the port racking up storage charges. Port storage fees vary by terminal, but they escalate quickly, often modest for the first few days and then jumping significantly. A week of delay can add hundreds of dollars per container per day on top of CBP penalties.
Once CBP processes the filing and all Partner Government Agency requirements are satisfied, the system issues a release notification. Cargo flagged for examination waits longer while CBP physically inspects it.
Keep Your Records for Five Years
Clearing customs doesn’t end your document obligations. Federal law requires importers to keep all entry records (invoices, entry summaries, correspondence, and supporting documents) for five years from the date of entry.10Office of the Law Revision Counsel. 19 U.S. Code 1508 – Recordkeeping CBP can request them at any point in that window, and failing to produce them carries its own penalties on top of any entry violations.
The window matters because CBP doesn’t finalize your entry immediately. The agency has up to one year after entry (longer in some cases) to liquidate it, meaning to review your classification, value, and duty payment and make a final determination. If they decide you underpaid, they will bill you for the difference plus interest. If you overpaid, you can claim a refund. Either result requires intact records. Brokers usually keep copies, but the legal responsibility sits with you as the importer of record.