Importing into the United States: Complete Beginner's Guide

Importing into the United States requires strict adherence to federal regulations managed by Customs and Border Protection and various Partner Government Agencies. New importers often struggle with the complex web of mandatory requirements, from securing an importer number to navigating tariff classifications and PGA permits. Failure to comply can result in cargo seizure, storage fees, or monetary penalties that disrupt your supply chain.

This guide breaks down the essential steps for Importing into the United States: Complete Beginner's Guide. You will learn how to obtain your importer number, select the right customs bond, and classify goods using HTS codes. We also detail the critical documents needed for clearance, how to calculate duties including MPF and HMF, and the specific compliance requirements for regulated products. Understanding these processes ensures your shipments clear customs efficiently and cost-effectively.

U.S. Import Requirements: Mandatory vs. Best Practices

Importer Number and IRS Business Tax Number registration

You must secure a valid importer number before filing any customs entry. This identifier links your business to U.S. Customs and Border Protection and serves as the foundation for all import activities. Most importers use their Employer Identification Number (EIN) issued by the IRS. If you do not have an EIN, you can obtain a customs-specific number through CBP Form 5106. This registration is mandatory for all entities bringing goods into the United States. Without a recognized importer number, your cargo cannot clear customs, leading to storage fees and delays. The scale of this activity is significant, as U.S. imports of goods increased $143.2 billion to $3,438.4 billion in 2025, according to the U.S. Census Bureau / BEA (https://bea.gov/news/2026/us-international-trade-goods-and-services-december-and-annual-2025).

Customs bond selection and Power of Attorney execution

A customs bond is a legal requirement for most commercial imports entering the United States. The bond guarantees payment of duties, taxes, and fees to the government. You can choose between a single transaction bond or an annual bond, with the latter being more cost-effective for regular importers. The bond amount varies based on the value of the goods and the type of entry. Along with the bond, you must execute a Power of Attorney with your customs broker. This document authorizes the broker to act on your behalf during the clearance process. Without a valid bond and executed Power of Attorney, CBP will not release your cargo, causing significant supply chain disruptions.

Recordkeeping obligations and compliance program basics

Importers must maintain detailed records of all transactions for five years from the date of entry. These records include commercial invoices, packing lists, bills of lading, and entry summaries. Proper recordkeeping is essential for audits and proving compliance with all applicable laws. Establishing an internal compliance program helps identify risks and ensures consistent adherence to regulations. This program should include regular training for staff and periodic reviews of import data. The financial stakes are high, as U.S. customs duties reached a record $113.3 billion gross in the first nine months of fiscal 2025, nearly double the prior year, according to Reuters (via The Jakarta Post) (https://www.thejakartapost.com/business/2025/07/12/us-customs-duties-top-100-billion-for-first-time-in-a-fiscal-year).

Requirement	Category	Legal Basis	Consequence of Non-Compliance	Key Action
Importer Number	Mandatory	19 CFR 113	Entry rejection	Obtain EIN or CBP Form 5106
Customs Bond	Mandatory	19 CFR 113	Cargo seizure	Purchase annual or single transaction bond
Recordkeeping	Mandatory	19 CFR 16	Monetary penalties	Retain documents for five years
Compliance Program	Best Practice	CBP Guidelines	Increased audit risk	Implement internal training and audits

The table above highlights the distinction between mandatory legal requirements and recommended best practices. Mandatory items like the importer number and customs bond are non-negotiable and enforced by CBP. Best practices, such as an internal compliance program, are not legally required but significantly reduce risk. Understanding this difference helps new importers prioritize their resources effectively.

Step Import Process: From Importer Number to Cargo Release

Obtain Importer Number via CBP Form 5106

The first step in the import process is securing your importer number. This unique identifier is essential for all customs transactions. Most businesses use their IRS Employer Identification Number (EIN). If you lack an EIN, you must file CBP Form 5106 to obtain a customs-specific number. This form is available on the CBP website and requires basic business information. You can submit it online or by mail. Processing times vary, so apply early to avoid delays.

Classify goods and determine HTS codes

Accurate classification determines your duty rate and eligibility for trade agreements. You must identify the correct Harmonized Tariff Schedule (HTS) code for each product. This code consists of ten digits for U.S. imports. The first six digits are international, while the last four are specific to the United States. Misclassification can lead to overpayment of duties or severe penalties. Use the HTSUS online database or consult a customs broker for complex items. Consider product materials, function, and intended use when selecting a code. Proper classification is the foundation of a successful import strategy and ensures compliance with all regulatory requirements.

File entry documents and pay estimated duties

Once classified, you must file entry documents with CBP. Your customs broker typically handles this step. The entry summary includes the HTS code, value, and duty calculation. You must also pay estimated duties and taxes. CBP accepts various payment methods, including electronic funds transfer. Ensure all documents are accurate to avoid delays. The entry must be filed within fifteen days of the arrival of the goods. Late filing can result in storage fees and penalties. Review the entry summary carefully before submission. Accurate documentation speeds up the clearance process and minimizes the risk of holds or examinations. U.S. customs duties reached a record $113.3 billion gross in the first nine months of fiscal 2025, nearly double the prior year, according to Reuters (via The Jakarta Post) https://www.thejakartapost.com/business/2025/07/12/us-customs-duties-top-100-billion-for-first-time-in-a-fiscal-year.

Arrange examination and cargo release

After filing, CBP may select your cargo for examination. This step verifies the accuracy of your declaration. If selected, you must arrange for the cargo to be moved to a suitable location for inspection. The examination can take several days, depending on the complexity and volume of goods. If the cargo passes inspection, CBP issues a release order. You can then arrange for final delivery to your warehouse. If issues arise, you may need to provide additional information or correct errors. High volumes mean examinations are common, so prepare for potential delays and maintain clear communication with your broker. The U.S. goods deficit with China decreased $93.4 billion to $202.1 billion in 2025, according to the U.S. Census Bureau / BEA https://bea.gov/news/2026/us-international-trade-goods-and-services-december-and-annual-2025.

Critical Documents Checklist with CBP Form Numbers

Commercial invoice packing list and bill of lading requirements

A commercial invoice must state the buyer, seller, merchandise description, quantity, value in U.S. dollars, and country of origin for every line item. The packing list mirrors the invoice with gross and net weights, dimensions, and package marks so CBP can verify the physical shipment. The bill of lading or air waybill serves as evidence of the contract of carriage and identifies the notify party who will file entry. Ocean shipments require the bill of lading number for the ISF-10+2 filing. Inaccurate weights or missing marks trigger intensive exams and storage charges that accrue daily. The scale of these operations is massive, as U.S. imports of goods and services were $4,333.8 billion in 2025, up $197.8 billion from 2024, according to the U.S. Census Bureau / BEA (https://bea.gov/news/2026/us-international-trade-goods-and-services-december-and-annual-2025).

CBP Form 7501 entry summary and CBP Form 3461 entry

CBP Form 3461 (Entry/Immediate Delivery) is filed electronically via ABI to obtain cargo release before the entry summary is finalized. CBP Form 7501 (Entry Summary) is the definitive declaration of value, classification, and duty owed; it must be filed within ten working days after release or within fifteen calendar days of arrival if release was not requested. Both forms require the importer number, bond reference, HTS codes, and port code. Errors on the 7501 trigger liquidated damages claims against the bond. Brokers typically file both forms through the Automated Commercial Environment using the same entry number to link release and summary records. This administrative volume is reflected in the record $113.3 billion gross in customs duties reached in the first nine months of fiscal 2025, nearly double the prior year, according to Reuters (via The Jakarta Post) (https://www.thejakartapost.com/business/2025/07/12/us-customs-duties-top-100-billion-for-first-time-in-a-fiscal-year).

Certificate of origin and PGA specific certificates

A certificate of origin is mandatory when claiming preferential duty treatment under USMCA or other free trade agreements; it must include the producer, exporter, importer, HTS classification, and origin criterion. Partner Government Agencies require additional certificates for regulated commodities: USDA phytosanitary certificates for plants, FSIS Form 9060-5 for meat and poultry, EPA Form 3540-1 for pesticides, and DOT HS-7 for vehicles. Missing PGA certificates result in immediate holds and potential re-export orders. Each certificate must match the commercial invoice description and HTS code exactly to avoid discrepancies that delay release. The complexity of these regulations is evident as U.S. customs duties hit a record $27.2 billion gross in June 2025, according to Reuters (via The Jakarta Post) (https://www.thejakartapost.com/business/2025/07/12/us-customs-duties-top-100-billion-for-first-time-in-a-fiscal-year).

Document	CBP Form / Reference	Responsible Party	When Required	Key Data Elements
Commercial Invoice	None (Commercial)	Exporter / Seller	Every shipment	Buyer, seller, description, qty, value USD, country of origin
Packing List	None (Commercial)	Exporter / Seller	Every shipment	Gross/net weight, dimensions, package count, marks/numbers
Bill of Lading / Air Waybill	None (Carrier)	Carrier / Freight Forwarder	Every shipment	Shipper, consignee, notify party, piece count, BOL/AWB number
Entry / Immediate Delivery	CBP Form 3461	Importer / Broker	Before cargo release	Importer number, bond, HTS, port, entry type, estimated duties
Entry Summary	CBP Form 7501	Importer / Broker	Within 10 working days of release	Final value, classification, duty calc, reconciliation flags
Certificate of Origin	USMCA Cert / Generic	Exporter / Producer	FTA claim only	Producer, exporter, importer, HTS, origin criterion, blanket period
PGA Certificates	Varies by Agency	Exporter / Importer	Regulated commodities	Agency-specific data (e.g., phytosanitary, FSIS, EPA, DOT)

The table above maps each mandatory document to its CBP form number or commercial equivalent, the party responsible for providing it, the trigger point in the import timeline, and the critical data fields that must align across all paperwork. Consistency between the commercial invoice, packing list, bill of lading, and entry forms prevents CBP holds. PGA certificates are commodity-specific and non-negotiable; a missing USDA phytosanitary certificate, for example, will stop a produce shipment at the port until the document is supplied or the cargo is re-exported. Brokers use the entry number to link the 3461 release with the 7501 summary, ensuring CBP sees a single cohesive transaction. This enforcement is active, as CBP recorded 57,360 trade seizures in FY 2025, according to STR Trade Report (CBP data) (https://www.strtrade.com/trade-news-resources/str-trade-report/trade-report/december/liquidated-damages-other-customs-enforcement-efforts-saw-big-jumps-in-fy-2025).

HTS Classification Valuation and Duty Calculation

Determining the correct HTS code using General Rules of Interpretation

The Harmonized Tariff Schedule assigns a ten-digit code that determines the duty rate, quota eligibility, and PGA requirements. Classification follows the six General Rules of Interpretation (GRIs) in strict order: GRI 1 reads the headings and section notes; GRI 2 covers incomplete or unfinished articles and mixtures; GRI 3 resolves goods classifiable under multiple headings by essential character; GRI 4 uses the "kinship" principle for goods not classifiable by the first three rules; GRI 5 addresses packaging; GRI 6 applies subheading rules. A wrong code can underpay duties by thousands of dollars and trigger penalties under 19 U.S.C. 1592. Importers should request a binding ruling from CBP when the classification is uncertain, especially for complex machinery or chemical mixtures.

Transaction value and alternative valuation methods

Transaction value is the price actually paid or payable for the merchandise when sold for export to the United States, plus statutory additions such as packing, assists, royalties, and proceeds of resale accruing to the seller. If transaction value cannot be used due to a related-party sale without arm's-length pricing, or missing additions, CBP applies the fallback methods in hierarchical order: transaction value of identical merchandise, transaction value of similar merchandise, deductive value based on U.S. resale price, computed value based on production cost plus profit, and finally the fallback "reasonable" method. Related-party importers must demonstrate that the relationship did not influence the price, often using test values from uncontrolled sales.

Duty rates MPF HMF and Section 301 232 tariff impacts

The total duty deposit equals the ad valorem rate from the HTS subheading multiplied by the entered value, plus the Merchandise Processing Fee (MPF) of 0.3464 percent subject to a $32.71 minimum and $634.62 maximum per entry, and the Harbor Maintenance Fee (HMF) of 0.125 percent on ocean shipments only. Section 301 tariffs add 7.5 to 25 percent on thousands of Chinese-origin HTS codes, while Section 232 imposes 25 percent on steel and 10 percent on aluminum articles regardless of country of origin except where specific exclusions or quotas apply. These additional duties are calculated on the same entered value and are not offset by free trade agreements unless the agreement explicitly provides relief. Importers must verify the current Chapter 99 subheadings for each entry because tariff lists change via Federal Register notice. The U.S. goods deficit with China decreased $93.4 billion to $202.1 billion in 2025, according to the U.S. Census Bureau / BEA (https://bea.gov/news/2026/us-international-trade-goods-and-services-december-and-annual-2025), while the U.S. goods deficit with Vietnam increased $54.7 billion to $178.2 billion in 2025, according to the U.S. Census Bureau / BEA (https://bea.gov/news/2026/us-international-trade-goods-and-services-december-and-annual-2025).

Cost Component	Basis	Rate / Amount	Applicability	Cap / Minimum
Ad Valorem Duty	HTS Classification	Varies by 10-digit code	All dutiable entries	No cap
Merchandise Processing Fee (MPF)	Entered Value	0.3464%	Formal entries	Min $32.71 / Max $634.62 per entry
Harbor Maintenance Fee (HMF)	Entered Value	0.125%	Ocean shipments only	No cap
Section 301 Tariffs	Entered Value	7.5% - 25%	Listed Chinese-origin HTS	Per Chapter 99 subheading
Section 232 Tariffs	Entered Value	25% Steel / 10% Aluminum	Steel & Aluminum articles	Per Chapter 99; quotas/exclusions may apply

The table breaks down every cost layer that builds the total landed duty deposit. The ad valorem rate is the only component that varies by product; MPF and HMF are fixed percentages with defined floors and ceilings. Section 301 and 232 tariffs stack on top of the base rate and apply to the same entered value, significantly increasing the cash deposit for affected goods. For example, a steel valve from China classified under a 301-listed HTS could face the base rate plus 25 percent Section 232 plus up to 25 percent Section 301. Importers must run the full calculation at the line-item level before committing to a purchase order to avoid unexpected cost overruns.

Partner Government Agency Requirements by Commodity

While Customs and Border Protection handles the final release of goods, the U.S. import process requires coordination with several other federal agencies that regulate specific product categories. These entities are collectively known as Partner Government Agencies, or PGAs. They enforce their own laws regarding safety, public health, environmental protection, and agriculture. Importers must identify which PGAs apply to their specific products before filing the entry with CBP. Failure to secure the necessary permits or licenses from these agencies results in the cargo being held, destroyed, or returned at the importer's expense.

Product Category	Regulating Agency	Key Requirement	Typical Filing Code
Food, Drugs, Devices	FDA	Prior Notice and Product Listing	61, 62, 63, 64, 65, 66, 67, 68
Plants, Animals, Soil	USDA APHIS	Permit or Inspection	02, 03, 04, 05, 06, 07, 08
Pesticides	EPA	FIFRA Registration	90
Consumer Products	CPSC	CPC and Test Reports	90
Alcohol, Tobacco	TTB	Permit or Tax Payment	90, 92, 94, 95

The table above maps common product categories to their primary regulatory bodies. The FDA oversees products that impact public health, including human and veterinary drugs, medical devices, and food. Importers must submit prior notice of shipment for food products and ensure that manufacturing facilities are registered with the agency. The USDA APHIS focuses on agricultural security, requiring permits for the import of live animals, plants, and certain soil samples to prevent the introduction of pests and diseases. The EPA regulates pesticides and antimicrobial products to ensure they meet environmental and safety standards. The CPSC enforces safety standards for thousands of consumer products, requiring proof of testing by a CPSC-accepted laboratory. The TTB manages the taxation and labeling of alcoholic beverages and tobacco products. Importers should check the CBP PGA list for the complete set of codes.

FDA requirements for food drugs devices and cosmetics

The Food and Drug Administration regulates imported products that affect public health, including human and veterinary drugs, medical devices, food, and cosmetics. Importers must ensure that foreign facilities are registered with the FDA and that products meet U.S. labeling and safety standards. For food, prior notice of shipment is mandatory before arrival. Drugs and devices require specific identification numbers and compliance with current Good Manufacturing Practices. Cosmetics do not require pre-market approval but must be properly labeled and free of prohibited ingredients. The FDA conducts physical examinations and laboratory testing at ports of entry. Non-compliant shipments may be refused admission and must be destroyed or re-exported. Importers should maintain records of regulatory correspondence and product approvals.

USDA APHIS permits for plants animals soil and wood packaging

The Animal and Plant Health Inspection Service enforces regulations to protect U.S. agriculture from invasive pests and diseases. Importers of live animals must secure a permit and provide veterinary health certificates. Plant imports often require phytosanitary certificates from the country of origin. Soil is heavily restricted due to the risk of carrying pathogens and weed seeds. Most wood packaging material must be heat-treated or fumigated and marked with the ISPM 15 standard. CBP officers may inspect shipments for signs of infestation. Violations can lead to the destruction of cargo and fines. Importers must verify that all biological materials are declared and permitted before shipping.

EPA FIFRA registration for pesticides and chemical substances

The Environmental Protection Agency regulates the sale and distribution of pesticides under the Federal Insecticide, Fungicide, and Rodenticide Act. All pesticides imported into the U.S. must be registered with the EPA. This registration process ensures that the product meets safety and efficacy standards. Importers must ensure that the product label complies with EPA requirements, including active ingredients and usage instructions. Unregistered pesticides are considered misbranded and cannot be entered. The EPA also oversees the import of certain chemical substances under the Toxic Substances Control Act. Importers should verify registration status and maintain product safety data sheets for customs presentation.

CPSC safety standards for consumer products

The Consumer Product Safety Commission enforces safety standards for thousands of consumer goods sold in the U.S. Importers are responsible for ensuring that their products comply with applicable safety rules. This often requires testing by a CPSC-accepted third-party laboratory. The importer must issue a Children's Product Certificate or General Certificate of Conformity based on these test results. These documents must be presented to CBP upon request. Products that fail to meet safety standards can be detained or seized. The CPSC maintains a database of recall information. Importers should review the specific regulations for their product category before manufacturing or shipping.

TTB permits for alcohol and tobacco products

The Alcohol and Tobacco Tax and Trade Bureau regulates the importation of alcoholic beverages and tobacco products. Importers must obtain a basic permit from the TTB before bringing these goods into the U.S. The permit application requires detailed information about the business and the products. Alcoholic beverages are subject to federal excise taxes that must be paid upon entry. Tobacco products are also subject to specific taxes and labeling requirements. The TTB regulates the labeling of alcohol to ensure accurate information about contents and alcohol content. Importers must file the appropriate tax returns and maintain records. Non-compliance can result in the loss of the permit and significant penalties.

Conclusion

Secure your IRS EIN or file CBP Form 5106 immediately to establish your importer number, then purchase an annual customs bond and execute a Power of Attorney with your broker before any shipment arrives. Classify every product using the ten-digit HTS code, verify whether Partner Government Agencies require permits, and prepare the commercial invoice, packing list, and bill of lading with exact weights and marks to avoid intensive exams. File CBP Form 3461 for release and CBP Form 7501 within ten working days, retaining all records for five years to withstand audits under 19 CFR 16.

Request a binding ruling for complex machinery or chemical mixtures to lock in classification and valuation, and monitor Section 301 and Section 232 tariff lists for sudden rate changes on Chinese-origin goods, steel, and aluminum. Build an internal compliance calendar that tracks bond renewal, record retention deadlines, and PGA license expirations. Start by confirming your HTS codes against the official HTSUS database and scheduling a review with your customs broker.

Frequently Asked Questions

What are the requirements for importing into the United States from Germany?

You must obtain an importer number using your IRS EIN or CBP Form 5106, secure a customs bond, and classify goods with ten-digit HTS codes. German-origin goods require a commercial invoice, packing list, and bill of lading, plus a certificate of origin if claiming USMCA preferences. Partner Government Agencies such as USDA or FDA may require additional permits depending on the commodity.

What documents do I need for importing into the United States and what should I do?

Prepare a commercial invoice with buyer, seller, value, and country of origin, a packing list with weights and marks, and the bill of lading or air waybill. File CBP Form 3461 electronically for cargo release and CBP Form 7501 as the entry summary within ten working days. Include certificates of origin for trade agreements and any PGA-specific certificates like phytosanitary or EPA forms.

What are the costs for importing into the United States?

Costs include the ad valorem duty rate from the HTS code, a Merchandise Processing Fee of 0.3464 percent capped at a statutory maximum per entry, and a Harbor Maintenance Fee of 0.125 percent on ocean shipments. Additional expenses cover customs bond premiums, broker fees, and potential Section 301 or Section 232 tariffs that add 7.5 to 25 percent on specific origins and products.

What is required for importing dogs into the United States?

Dogs must appear healthy, be at least six months old, have a valid rabies vaccination certificate, and possess an ISO-compatible microchip. A CDC Dog Import Form receipt is mandatory, and dogs from high-risk rabies countries require a CDC import permit or entry through a CDC-approved animal care facility. USDA APHIS may impose additional confinement or inspection requirements.

What is required for importing soil into the United States?

Soil is strictly regulated by USDA APHIS and generally prohibited without a PPQ Form 525 permit issued for specific research or testing purposes. The permit dictates approved treatment methods such as heat sterilization and authorized receiving facilities. Unauthorized soil shipments are subject to immediate re-export, destruction, or treatment at the importer's expense.

What is required for importing pesticides into the United States?

All pesticides must be registered with the EPA under FIFRA before importation, and the producer must have an EPA establishment number. You must file EPA Form 3540-1 (Notice of Arrival) prior to entry and ensure labeling complies with U.S. requirements. Unregistered or misbranded pesticides are refused entry and may incur penalties under 19 U.S.C. 1592.

What is the general process for importing goods into the United States?

Secure an importer number and customs bond, then classify each product with a ten-digit HTS code to determine duties and PGA requirements. File CBP Form 3461 for release and CBP Form 7501 for the entry summary with estimated duty payment. Maintain all records for five years and establish a compliance program to manage valuation, classification, and PGA obligations.

What are the rules for steel imports into the United States?

Steel imports are subject to Section 232 tariffs of 25 percent on most countries unless covered by a quota agreement or specific exclusion. Importers must report the country of melt and pour on the entry summary and may need to apply for product exclusions through the Commerce Department portal. Accurate HTS classification in chapters 72 and 73 is critical to avoid misclassification penalties.

What is the largest import into the United States?

Passenger vehicles consistently rank as the highest-value single import category by HTS code, followed closely by crude oil, pharmaceuticals, and cell phones. The overall leading import sector by total value is industrial supplies and materials, which includes energy products, chemicals, and metals. Values shift annually based on energy prices and consumer demand cycles.

What goods are imported into the United States?

The United States imports a vast range of goods including consumer electronics, machinery, vehicles, pharmaceuticals, crude oil, apparel, and furniture. Top source countries include China, Mexico, Canada, Germany, and Japan. The specific mix reflects domestic consumption patterns, manufacturing supply chains, and energy needs that vary by season and economic conditions.

What is the guide for commercial importers importing into the United States?

CBP publishes "Importing into the United States: A Guide for Commercial Importers" which outlines mandatory requirements for importer numbers, bonds, entry filing, valuation, classification, and recordkeeping. It details the reasonable care standard, penalty provisions under 19 U.S.C. 1592, and the Prior Disclosure process. The guide is available free on the CBP website and serves as the primary regulatory reference.

What is the role of CBP when importing into the United States?

U.S. Customs and Border Protection (CBP) is the primary agency enforcing import laws, collecting duties, and facilitating legitimate trade at ports of entry. CBP officers examine cargo, verify documentation, assess penalties for fraud or negligence, and coordinate with Partner Government Agencies on regulated goods. All entry filings, bond management, and recordkeeping compliance fall under CBP authority per 19 CFR.

Sources

• U.S. Census Bureau / BEA (2025): U.S. total imports of goods and services
• Reuters (via The Jakarta Post) (first nine months of FY 2025): U.S. customs duty collections
• STR Trade Report (CBP data) (FY 2025): CBP trade seizures