Importing Goods Into the United States: A Practical Guide

Summary. This guide takes a company from its first import through a working compliance program: the setup decisions that determine everything afterward, the classification work that should happen before the first purchase order, how to build a landed cost model that includes the tariffs people forget, the supplier documentation that origin and preference claims depend on, the entry process and the deadlines that follow it, and what to do when something goes wrong. With a first-shipment sequence, contract clauses that allocate customs risk, and the duty savings analysis most importers never run.

The most expensive mistake in importing is made before anything is shipped: committing to a product, a supplier, and a price without knowing the landed cost.

A company negotiates a unit price of $14.20, builds a margin model on it, signs a purchase order — and then learns at entry that the product's tariff subheading carries a 6.5% base rate, a 25% Section 301 tariff, and a partner-agency requirement that adds a week and a testing cost. The margin model was wrong from the first shipment.

This guide is organized to prevent that, and then to keep the operation compliant afterward.

Part 1 — Before the first purchase order

Classify the product. Not approximately. Work the General Rules of Interpretation in order, starting with GRI 1 and the section and chapter notes, and search Customs' published rulings for the same or similar merchandise. Write down the subheading and one paragraph explaining why.

Then check what attaches to that subheading:

• The base duty rate in the tariff schedule.
• Whether it appears on a Section 301 list for your source country, and at what rate — 19 U.S.C. § 2411.
• Whether a Section 232 action reaches it — 19 U.S.C. § 1862.
• Whether an antidumping or countervailing duty order covers goods of that description from that country — and if the answer is close, whether a scope ruling should be requested.
• Whether a free trade agreement preference is available, and what the rule of origin requires.
• Which partner government agencies have jurisdiction — FDA for food, drugs, devices, and cosmetics; USDA for agricultural products; EPA for chemicals and engines; CPSC for consumer products; FCC for radio-frequency devices; DOT for vehicles and equipment. Each has its own filing, and some require registration or testing well before arrival.
• Whether quotas or licensing apply.

If the classification is genuinely uncertain and the volume justifies it, request a binding ruling under 19 C.F.R. Part 177 before committing.

Build the landed cost model:

Two lines that get omitted and should not be. The assists line, because it is a legal component of customs value and because it also belongs in the true cost of goods. And the AD/CVD line, because deposits are estimates and the final rate — set in an administrative review, sometimes years later — can be a multiple. If your product is potentially within an order's scope, model the exposure and consider whether the sourcing decision survives it.

Part 2 — Setting up

Decide who the importer of record will be. If it is you, the legal responsibility for classification, valuation, origin, and duties is yours. If the supplier or a distributor is the IOR, you are not liable for the entry — but you also have no control over the declarations made in your supply chain, and you may inherit exposure later.

Obtain the identifiers: an EIN, and a customs assigned number if you have no EIN.

Obtain a customs bond. A continuous bond is generally the right choice for anyone importing regularly; a single transaction bond works for one-off shipments. The bond amount is calculated from your duty, tax, and fee liability, and AD/CVD exposure can drive it up substantially.

Select a customs broker. Interview more than one. Ask: what experience do you have with this product category and this source country; how do you handle classification questions; will you flag a code you think is wrong; what is your process for AD/CVD screening; and how do you handle post-entry corrections? Then give the broker a written instruction letter stating the classifications to be used and requiring escalation of any deviation.

Execute a power of attorney to the broker. Understand that it authorizes the broker to act; it does not transfer your legal responsibility.

Register with the partner agencies that have jurisdiction over your product, before the first shipment. FDA registration and prior notice requirements in particular have caught many first-time importers at the port.

Set up recordkeeping per 19 C.F.R. Part 163 — five years, retrievable, with an owner.

Part 3 — The supplier relationship

Most customs failures originate in documents the supplier provides or does not.

What to require in the purchase agreement:

• Accurate commercial invoices with a complete description, the quantity, the unit and total price, the currency, the terms of sale, the country of origin, and the manufacturer's identity and address.
• Disclosure of all components' origins, and a description of the manufacturing operations performed in each country.
• A supplier declaration of origin with the supporting basis, refreshed annually and on any process change.
• Free trade agreement certification where preference is claimed, with the obligation to provide supporting records on request.
• A representation regarding forced labor, with the right to audit and to obtain traceability documentation on request — see 19 U.S.C. § 1307.
• Notification of any change in manufacturing location, process, or component sourcing, before it takes effect.
• Intellectual property representations and indemnity, given border enforcement of recorded marks.
• Marking compliance — the supplier marks the goods and packaging as required, at the supplier's cost, with the importer's approval of the marking before production.
• Records access and retention for the periods United States law requires.
• Indemnity for duties, penalties, and costs arising from inaccurate supplier information.

And get the Incoterm right. DDP puts the duty burden and the importer-of-record role on the seller — attractive until you realize you have no visibility into the declarations being made in your name. FOB or EXW keeps you in control and in the responsibility. Choose deliberately; the term allocates cost, risk, and — indirectly — compliance responsibility. See The UCC Article 2 Sale of Goods and Negotiating a Master Services Agreement and Statement of Work for the contracting framework.

Part 4 — The first shipment, step by step

1. Confirm the classification with the broker, in writing, before shipment.
2. Confirm marking — country of origin marked on the article, conspicuously, legibly, permanently, and in English. Review a production sample before the run.
3. Review the commercial invoice for completeness before the goods ship. An incomplete invoice is the most common cause of a delayed entry.
4. File the Importer Security Filing for ocean shipments, within the required window before lading. Late filings carry penalties.
5. Confirm partner-agency filings are ready.
6. Arrival and entry. The broker files the entry and entry summary under 19 U.S.C. § 1484 and 19 C.F.R. Part 141, and duties are deposited.
7. Examination, if selected. Budget for exam fees and delay.
8. Release.
9. Review the entry summary yourself against your records — classification, value, quantity, origin. This is the step nobody does, and it is where errors are caught while they are still free to fix.
10. Post-summary correction if an error is found before liquidation.
11. Liquidation, generally within a year.
12. Protest within 180 days of liquidation if the liquidation is wrong — 19 U.S.C. § 1514.

Part 5 — Running the program

Monthly:

• Sample entry summaries against the classification database and the commercial invoices.
• Reconcile duties paid against the landed cost model.
• Confirm any new SKU has been classified and analyzed before it ships.

Quarterly:

• Review Section 301 and 232 lists, exclusion processes, and AD/CVD orders affecting your codes and countries.
• Review supplier declarations for currency.
• Confirm bond sufficiency against actual duty volume.

Annually:

• Review classifications against new rulings and the amended tariff schedule.
• Refresh supplier origin declarations and FTA certifications.
• Run a drawback analysis — see below.
• Conduct a self-assessment of a sample of entries.
• Train the people who touch purchasing, engineering, logistics, and accounts payable on what creates a customs consequence.

The training point deserves emphasis. The engineer who sends design files to a foreign factory has created an assist. The purchasing manager who moves final assembly to a third country may have changed the origin. The finance team that makes a year-end intercompany price adjustment has changed the customs value. None of those people work in logistics, and none of them will think to tell anyone.

Part 6 — Duty savings, which most importers never run

Drawback — 19 U.S.C. § 1313. Up to ninety-nine percent of duties refunded on imported merchandise later exported or destroyed, including substitution provisions permitting the use of commercially interchangeable goods, and claims reaching back five years. If you export any meaningful fraction of what you import — including returns, samples, and scrap — run the analysis. It is the most commonly unclaimed benefit in customs practice.

Free trade agreement preferences. Determine whether your goods qualify under the applicable agreement's rules of origin. Qualification is a records exercise: bills of materials with component origins, production records, and supplier certifications, maintained and producible at verification.

First sale valuation. In a multi-tier transaction, the price paid by the middleman to the factory may be the dutiable value if the conditions are met — a bona fide sale clearly destined for the United States, at an arm's-length price, documented. For high-duty goods this is a substantial lawful saving.

Foreign trade zones. Duty deferral until withdrawal, duty elimination on re-export or destruction, and inverted tariff benefits where the finished article's rate is lower than its components'. Worth analyzing for operations with significant inventory or re-export volume.

Chapter 98 provisions for United States goods returned and for goods exported for repair or alteration; temporary importation under bond; and de minimis treatment for low-value shipments.

Exclusions. Where a Section 301 exclusion process is open, determine whether your product qualifies and file. Exclusions are product-specific and time-limited, and they are frequently available to importers who never check.

Part 7 — When something goes wrong

You find an error in your own entries. Quantify it across the affected period. If the entries have not liquidated, file post-summary corrections. If they have, and duties were underpaid, consider a prior disclosure under 19 U.S.C. § 1592 — which, filed before Customs commences an investigation, reduces the penalty dramatically. And stop the conduct immediately, because continuing after discovery converts negligence into gross negligence or fraud.

Customs issues a Request for Information or a Notice of Action. Respond completely and on time. These are how a routine review becomes an audit, and a non-response or a partial response is how it escalates.

A shipment is detained. Determine the basis — classification, valuation, admissibility, partner agency, intellectual property, or forced labor. Detentions have decision deadlines, and the response varies completely by cause. A forced labor detention under the UFLPA presumption requires traceability documentation to the raw material level, which cannot be assembled after the fact.

A penalty notice arrives. It will state a culpability level. The response addresses the culpability characterization as much as the underlying facts — the difference between negligence and gross negligence is a factor of two on the penalty. Mitigating factors include the existence of a compliance program, prior disclosure, cooperation, remedial action, and the absence of a prior violation history.

An audit opens. Customs conducts focused assessments and other reviews. The response is the compliance file: the classification analyses, the ruling citations, the supplier declarations, the assist documentation, the written procedures, and the training records. A company with that file has a very different audit than one without it, even where the same errors exist — because the file is what "reasonable care" looks like.

Part 8 — A worked first import

The company. A specialty retailer decides to import ceramic dinnerware from a manufacturer abroad. First order: 4,000 units at $6.80 each, FOB origin.

Week 1 — Classification. The buyer assumes "ceramic tableware" and moves on. The compliance review does not. Working GRI 1 and the chapter notes, the product is porcelain rather than earthenware, which sits in a different subheading at a different rate — and the chapter notes distinguish them by a technical characteristic the buyer had not asked about. A message to the supplier confirms the body composition. Correct subheading identified; two Customs rulings on materially identical articles support it.

Week 1 — What attaches. The subheading carries a base rate. It appears on a Section 301 list for this source country at 25%. And there is an antidumping order covering certain ceramic tableware from that country — but the scope language excludes articles meeting a specific description, and the product appears to fall within the exclusion. Because the difference is roughly $170,000 in deposits on this order alone, the company requests a scope ruling rather than guessing.

Week 2 — Landed cost, corrected.

The original margin model used $6.80 plus freight. The corrected number is 33% higher, and it changes the retail price. This is the entire value of doing the work before the purchase order.

Week 3 — Setup. Continuous customs bond obtained, sized against projected duty including the Section 301 exposure. Broker selected and given a written instruction letter with the classification and its basis. Power of attorney executed. Consumer product safety requirements reviewed — dinnerware is subject to lead and cadmium limits, so testing to the applicable standard is arranged and the certificate is obtained before shipment.

Week 4 — Supplier documentation. Purchase agreement amended to require: accurate commercial invoices; disclosure of component origins and operations by country; an annual origin declaration; a forced labor representation with audit rights; marking to specification with a pre-production sample approved; records retention; and indemnity for duties and penalties arising from inaccurate information.

Week 6 — Marking. The pre-production sample arrives marked on a removable paper sticker. Rejected — marking must be conspicuous, legible, permanent, and in English. The supplier switches to a fired backstamp at the company's request, at modest cost, avoiding a marking duty of ten percent ad valorem and a redelivery demand.

Week 10 — Entry. Filed with the confirmed classification and the assist included in the declared value. The scope ruling arrives before entry, confirming the exclusion; no AD/CVD deposits required.

Week 11 — Self-review. The company checks the entry summary against its own records. The declared value omitted the mold apportionment on this entry — a broker data-entry error. A post-summary correction is filed before liquidation. Cost: an amended filing. Cost if found in an audit three years later: the cumulative underpayment across every intervening entry, plus interest, plus a penalty.

Month 14 — Drawback. The company begins exporting a portion of its inventory to a Canadian affiliate. A drawback analysis identifies recoverable duties on the exported units, including the Section 301 component, and claims are filed reaching back to the first entry.

What made this work: classification before the purchase order, an assist nobody would have caught in logistics, a scope ruling requested rather than assumed, a marking sample reviewed before production, and a self-review of the entry summary that took twenty minutes.

Part 9 — Sourcing decisions with customs consequences

Companies change suppliers, move production, and restructure supply chains constantly, and each of those decisions has a customs dimension that is usually noticed afterward.

Moving production to a different country. Check three things before committing: whether the new country's goods face a different base rate under the tariff column applicable to it; whether the product is on a Section 301 or 232 list for that country; and whether an antidumping or countervailing order covers the description. A sourcing move made to reduce unit cost that lands on a 25% tariff has increased total cost.

Splitting production across countries. The origin question becomes central. Where components from Country A are processed in Country B, the question is whether the operations in B constitute a substantial transformation — a new and different article with a different name, character, or use. Simple assembly, packaging, testing, and labeling generally are not. Get the analysis before the arrangement, not after a detention.

Adding a middleman. A new distributor tier changes the valuation analysis and may open a first sale opportunity — or may create a related-party question if the middleman is affiliated. Both are worth analyzing before the structure is set, because retrofitting first sale documentation is far harder than building it.

Changing to DDP terms. Attractive because the supplier handles everything, and dangerous because someone is filing entries in your name — or naming themselves as importer of record with your goods — with declarations you never see. If you go DDP, require copies of every entry summary and reserve audit rights.

Sourcing from a country subject to forced labor enforcement. Map the supply chain to the raw material level before the first shipment, not after a detention. The rebuttable presumption places the burden on the importer, and the documentation required — supplier lists, production records, transaction records, and traceability at each tier — takes months to assemble.

Bringing manufacturing to the United States. Check whether components will still be imported, whether an inverted tariff situation makes a foreign trade zone attractive, and whether the finished product supports an unqualified "Made in USA" claim under the FTC's "all or virtually all" standard, which is more demanding than the customs marking analysis.

Acquiring a company that imports. Customs liability travels. Diligence should cover: classification practices and their documentation; assist identification; origin substantiation; AD/CVD exposure including unliquidated entries subject to review; open protests and penalty proceedings; recordkeeping compliance; and any prior disclosure history. Unliquidated entries subject to an antidumping administrative review are a contingent liability that can exceed the purchase price. See Buying and Selling a Business Toolkit and IP Due Diligence Checklist for Mergers and Acquisitions.

Part 10 — Frequently asked questions

"Do I need a customs broker?" Not legally — an importer may file its own entries. Practically, yes for almost everyone, because the filing systems, the partner-agency interfaces, and the port relationships are specialized. What you should not do is treat the broker as the decision-maker on classification.

"What does a bond cost?" A continuous bond premium is a modest annual amount for most importers, sized against the bond amount, which is itself calculated from duty, tax, and fee liability. AD/CVD exposure can increase the required bond substantially, and an insufficient bond causes entries to be rejected — check sufficiency before volume grows.

"Can I import a small quantity without all this?" Low-value shipments may qualify for simplified treatment, and the thresholds and rules have been the subject of repeated change. But classification, origin, marking, admissibility, and partner-agency requirements still apply, and a product that requires FDA prior notice requires it regardless of value.

"What is an ISF and why do I keep hearing about it?" The Importer Security Filing, required for ocean shipments a specified time before lading. It carries its own penalties for late or inaccurate filing, and it is a common first violation for new importers.

"My goods were selected for exam." Budget for it. Exams cost money (the importer pays), cause delay, and are a normal part of importing. Repeated exams may indicate a data problem in your entries worth diagnosing.

"The invoice says 'sample, no commercial value.'" There is no such thing for customs purposes. Samples have a value and must be declared. This phrase on an invoice is a reliable predictor of a valuation problem.

"Can I use the invoice value my supplier puts on the commercial invoice?" Only if it reflects the price actually paid or payable, plus the statutory additions — assists, selling commissions, royalties paid as a condition of sale, packing, and proceeds accruing to the seller. The supplier's invoice is an input to the customs value, not the answer.

"We're paying our supplier partly through a separate agreement." Then that payment is likely part of the price actually paid or payable and belongs in the customs value. Split payments, "consulting" agreements with the supplier's affiliate, and offsetting credits are all examined in audits.

"How far back can Customs go?" Generally five years for penalty purposes, with recordkeeping obligations running the same period. Entries that have liquidated are final absent a protest or a penalty proceeding, but the penalty statute reaches back regardless.

"We are switching brokers." Get your complete entry data from the outgoing broker first — you are the one required to keep the records, and a broker relationship that ends badly can leave you unable to produce them.

Part 11 — The classification worksheet, filled in

Classification is the determination everything else depends on, and it is the one importers are least confident about. Here is the work, on one product.

The article. A cordless handheld device that both vacuums and blows air, sold for household use, with a rechargeable lithium-ion battery, a plastic housing, and interchangeable nozzles, packaged with a charging base and three accessories in a retail box.

Step 1 — GRI 1. What do the headings say? Candidate headings include those covering vacuum cleaners, other electromechanical domestic appliances with self-contained electric motors, and fans. Read the section and chapter notes first: they frequently exclude an entire category or direct classification elsewhere, and they control over any argument about which heading "fits better."

Step 2 — Is it classifiable under one heading by its terms? If the notes and heading text resolve it — for example, if a heading expressly covers vacuum cleaners including those with a blower function — the analysis ends. GRI 1 resolves most classifications, and stopping to argue about essential character before exhausting GRI 1 is the most common analytical error.

Step 3 — If two headings each describe part of it, GRI 3(a). Which provides the most specific description? A heading naming the article by name is more specific than one covering it as a residual "other."

Step 4 — If neither is more specific, GRI 3(b): essential character. For a composite machine, essential character is assessed by the component or function that gives the article its character — considering the nature of the components, their bulk, quantity, weight, value, and the role of each in relation to the use of the goods. Document the reasoning, because this is the step Customs will test.

Step 5 — The retail set question. Goods put up in a set for retail sale are classified as if consisting of the component giving the set its essential character. Here, the device gives the set its character; the charging base and accessories follow it.

Step 6 — GRI 6, at the subheading level. Apply the same rules comparing subheadings at the same level only.

Step 7 — Check the rulings. Search Customs' published rulings for the same or similar merchandise. If a ruling on a materially identical article exists, it is both the answer and the evidence of reasonable care. If a ruling reaches a different conclusion than yours, address it — do not ignore it.

Step 8 — Check what attaches. Section 301, Section 232, AD/CVD scope, preference eligibility, partner-agency jurisdiction (here: CPSC for the product, and lithium battery transport and labeling requirements), and quota.

Step 9 — Write it down. Subheading, the GRI path, the reasoning at each step, the rulings relied on, the trade remedies checked, and the date. That paragraph is your compliance record, and it takes twenty minutes.

Step 10 — If it is genuinely close and the volume is significant, request a ruling. A binding ruling under 19 C.F.R. Part 177 costs a filing and thirty to ninety days, and it eliminates the exposure.

Part 12 — Timeline and budget

A realistic first-import timeline, from decision to delivered goods:

A realistic budget for a first-time importer:

How to think about the spend. The compliance investment is a fraction of one classification error's exposure. In the worked example earlier, four years of a wrong subheading produced a $1.9 million duty loss — against a classification review that would have cost a few thousand dollars before the first shipment. The asymmetry is not close, and it is the entire argument for doing the work up front.

Part 13 — Who does what, inside the company

Customs compliance fails at the seams between departments. Assigning the responsibilities explicitly is most of the fix.

The two seams that produce the most exposure: engineering-to-compliance (assists) and sourcing-to-compliance (origin and trade remedies). Both are solved by a one-page notification rule and a person who owns it.

And one governance point. Customs exposure is a financial statement item. Unliquidated entries subject to an antidumping administrative review, an open penalty proceeding, and an unquantified classification error are contingent liabilities, and they belong in the same conversation as any other. A compliance function that reports only to logistics will not have that conversation. See Corporate Governance for Closely Held Companies.

Part 14 — The ten things that go wrong most often

1. The classification was never analyzed — the broker used a code, and nobody wrote down why.
2. Assists were never identified, because they live in engineering and accounts payable rather than logistics.
3. A supplier change moved the origin, and nobody ran the substantial transformation analysis.
4. The Section 301 exposure was not in the landed cost model, so the product was priced wrong from the first shipment.
5. AD/CVD deposits were treated as the final cost, and the administrative review produced a multiple.
6. The marking was a sticker, and Customs demanded redelivery plus a ten percent marking duty.
7. The entry summary was never reviewed against the company's own records, so a data error repeated for years.
8. A preference claim had no records behind it, and the entire period was denied at verification.
9. Drawback was never claimed, leaving recoverable duties with the government.
10. The error was found and the conduct continued, converting a negligence exposure into a gross negligence one.

Every one of these is a process failure rather than a legal one, and each is prevented by a control that costs almost nothing: write down the classification analysis; flag payments to suppliers outside the invoice; notify compliance before a sourcing change; include the remedy rate in the cost model; treat AD/CVD deposits as estimates; approve marking on a pre-production sample; review entry summaries monthly; keep the preference records at the time of the claim; run the drawback analysis annually; and stop the conduct the day you find the error.

Part 15 — A note on volatility

One feature of this field deserves a warning that does not apply to most areas of practice.

Tariff rates and trade remedies change abruptly, and sometimes retroactively in effect. A Section 301 list can be expanded, an exclusion can lapse, a Section 232 action can reach derivative products that were previously outside it, an antidumping order can issue on a product category that had none, and an entity list can be updated overnight. None of that requires legislation, and none of it comes with the lead time that ordinary regulatory change does.

The practical implications:

• Contracts should allocate the risk. A long-term supply agreement priced on today's duty rate needs a provision addressing what happens if a new tariff or remedy attaches — price adjustment, renegotiation, or termination. This has become a standard negotiated term, and its absence has produced substantial disputes. See Force Majeure, Impracticability, and Frustration of Purpose for why the general excuse doctrines are unlikely to help.
• Landed cost models need a review cadence, not a one-time build.
• Someone must own the watch — the remedy lists, the exclusion processes, the AD/CVD docket for your product categories, and the entity lists. Quarterly at minimum.
• Sourcing decisions have a shorter half-life than they used to. A supply chain optimized entirely around one country's cost advantage carries a policy risk that belongs in the analysis.

And a related point about legal certainty. Because so much of the operative law in this field is Customs' own interpretation expressed in ruling letters, the weight courts give those interpretations matters enormously. United States v. Mead Corp., 533 U.S. 218 (2001), held that classification ruling letters do not carry Chevron deference but may command respect according to their persuasiveness. As the broader law of administrative deference has continued to develop, the practical consequence for importers is the same either way: a ruling in your favor is protection, and a ruling against a position you have taken is a problem you should address rather than hope goes unnoticed.

Related documents

• Customs, Tariffs, and Import Compliance
• Import Compliance and Customs Entry Checklist
• Customs and Trade Compliance Toolkit
• Export Controls and Economic Sanctions
• Transportation and Logistics Law
• The UCC Article 2 Sale of Goods
• Building a Vendor and Third-Party Risk Management Program
• Purchase Order and Terms of Sale Review Checklist
• Gray Market Goods and the First Sale Doctrine
• Product Safety and Recall Toolkit
• Food and Beverage Regulation

This guide is educational and not legal advice. Tariff rates, trade remedy actions, exclusion processes, and forced labor entity lists change frequently and sometimes abruptly. Verify current rates and orders before relying on any statement here, and consult customs counsel or a licensed customs broker for a specific transaction.