Import Bond Requirements: The Complete Guide
An import bond is a mandatory financial guarantee that U.S. Customs and Border Protection requires before releasing most commercial shipments into the country. Without the right bond in place — at the right value — your goods won’t clear customs, and every day of delay costs money.
This guide explains exactly what import bonds are, when you need one, how to size it correctly, and what happens if you get it wrong.
What Is an Import Bond?
Customs Bond (Import Bond): A three-party legal contract — between the principal (the importer or customs broker), a surety company (a CBP-approved insurer), and CBP (U.S. Customs and Border Protection) — that guarantees the principal will pay all applicable duties, taxes, and fees and comply with all CBP regulations governing an import transaction.
Import bonds exist because CBP releases goods before final duty liability is fully determined. The bond gives CBP a financial backstop: if the importer doesn’t pay what’s owed, the surety does — up to the bond’s face amount.
Bonds are governed by 19 CFR Part 113 and authorized under 19 USC 1623, which gives the Secretary of the Treasury authority to require bonds as a condition of entry. Every surety company offering customs bonds must be on the Treasury Department’s approved surety list (Treasury Circular 570).
Key statistic: According to CBP’s Trade Statistics, the U.S. processed approximately 36.9 million formal entries in fiscal year 2023. Each of those entries required an active customs bond on file.
Types of Import Bonds
There are two primary types of customs bonds for importers. Choosing the wrong type — or the wrong bond amount — is one of the most common compliance errors in trade.
Single-Entry Bond (SEB)
A single-entry bond covers exactly one CBP entry filing. It’s valid for one shipment, from one port of entry, on one occasion.
Best for: Importers who ship infrequently — typically fewer than three or four times per year — or who are testing a new product for the first time.
Continuous Bond (CB)
A continuous bond covers all CBP entry transactions by a single importer for a rolling 12-month period, across all ports of entry, until canceled. It renews automatically each year unless terminated.
Best for: Any importer with regular import activity. Most commercial importers maintain a continuous bond.
| Feature | Single-Entry Bond | Continuous Bond |
|---|---|---|
| Coverage period | One entry only | 12 months, auto-renewing |
| Ports covered | One port | All U.S. ports of entry |
| Minimum bond amount | Greater of $100 or duty + value | $50,000 (CBP minimum) |
| Typical cost | 0.5%–0.75% of shipment value | ~0.5% of annual duties paid |
| Best for | Occasional importers | Regular commercial importers |
| Filed with CBP | Per entry | Once, kept on file at CBP |
| Cancellation | Expires after entry closes | Must be formally canceled |
Beyond the standard importer of record bond, CBP also requires activity-specific bonds for customs brokers, carriers, Foreign Trade Zone operators, and bonded warehouse operators — all defined under 19 CFR Part 113 with separate activity codes.
How the Import Bond Process Works
Here is the step-by-step workflow from the moment you decide to import commercially to the moment your bond is active and your goods are cleared.
Step 1: Determine your entry type. If your shipment’s commercial value is $2,500 or more, or if it involves goods regulated by a federal agency (FDA, USDA, EPA, CPSC), you are required to file a formal entry. Formal entries always require a bond.
Step 2: Calculate the required bond amount. For a single-entry bond, CBP requires the bond to equal the total of: (a) estimated import duties + taxes + fees, plus (b) the declared value of the merchandise — or $100, whichever is greater. For a continuous bond, CBP requires the bond amount to be at least 10% of total duties, taxes, and fees paid in the prior 12 months, with an absolute floor of $50,000.
Step 3: Select a CBP-approved surety. Work with a customs broker or a surety company listed on Treasury Circular 570. Your broker will typically handle the bond application on your behalf as part of their standard services. See 10 Core Duties of a Customs Broker Explained for a full breakdown of what brokers handle for importers.
Step 4: Complete the bond application. The surety underwrites the bond based on your credit history, import volume, and the commodity you’re importing. High-risk commodities (textiles, electronics, pharmaceuticals) may receive additional scrutiny or require a larger bond.
Step 5: File the bond with CBP via ACE. Your broker submits the bond through CBP’s Automated Commercial Environment (ACE) portal. Continuous bonds are filed once and remain on file; single-entry bonds are filed with each individual entry.
Step 6: CBP reviews and releases the shipment. Once CBP confirms the bond is in place (and all other entry requirements are met), the agency issues release. Post-release, CBP continues to review the entry for up to four years and can issue a duty demand — called a bill — during that period. The bond covers any such demands.
Step 7: Monitor bond sufficiency annually. If you hold a continuous bond, review your import volume each year before renewal. If your duties, taxes, and fees have grown, increase the bond amount before CBP issues a notice of insufficient bond.
Legal Framework: The Regulations That Govern Import Bonds
Understanding the regulatory basis for bond requirements helps importers understand why CBP enforces them strictly and what happens when there’s a deficiency.
19 USC 1623 — the foundational statute — authorizes CBP to require bonds as a condition of entry. The Secretary of the Treasury has broad discretion to set bond requirements, and CBP exercises that discretion through regulation.
19 CFR Part 113 is the primary regulatory framework. It defines all bond types (by activity code), prescribes minimum amounts, establishes the rights and obligations of principals and sureties, and governs termination and cancellation procedures.
19 CFR 113.62 specifically sets out the conditions of the importer’s general bond — the standard continuous bond used by most commercial importers. It requires the principal to:
- Pay all duties, taxes, and fees owed to CBP
- Redeliver merchandise on CBP demand
- Comply with all laws and regulations governing imported merchandise
- File accurate entry documents and support CBP’s right to examine goods
19 USC 1484 (the “informal entry” statute) establishes the $2,500 threshold below which goods can be entered informally without a bond, provided they are not subject to federal agency requirements.
When CBP determines a bond is insufficient — either because the bond amount is too low or because the surety is no longer approved — the agency issues an Enhanced Bond Requirement or a Bond Directive, requiring the importer to immediately file a larger bond or face suspension of entry privileges.
Real-World Scenarios: What Bond Requirements Look Like in Practice
Scenario 1: Small E-Commerce Importer
A first-time Amazon FBA seller imports $18,000 worth of electronics from Shenzhen. Total estimated duties at 7.5% = $1,350. Single-entry bond required amount = $18,000 (value) + $1,350 (duties) = $19,350. At 0.5%, the bond premium is approximately $97. The seller purchases a single-entry bond through their customs broker.
After two more shipments, the broker recommends switching to a continuous bond. At $50,000 minimum, the annual premium runs about $450 — cheaper than three single-entry bonds at $97 each, and valid for all future entries regardless of port.
Scenario 2: Mid-Size Pharmaceutical Importer
A pharmaceutical distributor imports $4 million in Active Pharmaceutical Ingredients (APIs) annually, paying roughly $200,000 in duties, taxes, and fees. CBP’s continuous bond minimum = 10% × $200,000 = $20,000 — but the regulatory floor of $50,000 applies, so the bond must be at least $50,000. Given the high risk profile of pharmaceutical imports (FDA oversight, anti-dumping exposure), their broker recommends a $100,000 bond as a buffer. Annual premium: approximately $800–$1,000.
If you’re sourcing pharmaceuticals, you can browse pharmaceutical specialty brokers who understand these bond dynamics alongside FDA requirements.
Scenario 3: Automotive Parts Importer Facing CBP Action
An auto parts importer grew from $500,000 to $3.2 million in annual import duties over 18 months but never increased their continuous bond from $50,000. CBP issued a Bond Insufficiency Notice requiring a bond of at least $320,000 (10% of $3.2M). Until the new bond was filed, CBP held all incoming entries. The delay cost the importer approximately $40,000 in demurrage and expedited shipping fees before the issue was resolved.
For importers managing high-volume shipments through major ports, browse brokers by U.S. port of entry to find local experts who can anticipate these issues.
Common Mistakes and Misconceptions
Mistake 1: Assuming the $2,500 de minimis threshold eliminates all bond requirements
The $800 de minimis threshold (under Section 321 of the Tariff Act) allows duty-free informal entry for low-value shipments — but it doesn’t eliminate bond requirements for all goods. FDA-regulated products (food, drugs, cosmetics, medical devices) require an entry bond regardless of value. Many importers using Section 321 for small commercial shipments incorrectly assume they’re fully exempt.
Mistake 2: Treating the bond as a “one-time” setup
A continuous bond is an annual obligation. Failing to renew it — or failing to maintain an active surety relationship — causes the bond to lapse. CBP will block entries against a lapsed bond with no grace period.
Mistake 3: Not scaling the bond with import volume
CBP actively monitors the ratio of duties paid to bond amount. Importers whose duties exceed 10× their bond face Enhanced Bond Requirements, which can halt operations immediately. Review your bond annually — or any time your import volume increases significantly.
Mistake 4: Confusing a customs bond with cargo insurance
A customs bond protects CBP (and by extension, the government’s duty revenue). It does not protect the importer’s merchandise against loss, theft, or damage. Those are covered by marine cargo insurance — a completely separate product.
Mistake 5: Assuming a freight forwarder’s bond covers you
Some importers assume that because their freight forwarder is bonded, they don’t need their own bond. This is incorrect. A customs broker or freight forwarder bond (Activity Code 4) covers their own activities as a broker — not the importer’s liability for duties and compliance. You need your own importer bond unless you are explicitly named as a co-principal. For more on the distinction between brokers and forwarders, see 3PL With Customs Clearance and Warehousing Explained.
Tools and Resources for Import Bond Compliance
Managing import bond requirements is easier when you know where to find authoritative information and who to work with.
CBP.gov — The official source for bond forms (CBP Form 301), approved surety list, bond sufficiency notices, and ACE portal access. Start at cbp.gov for any regulatory question.
Treasury Circular 570 — Updated annually, this circular lists all surety companies approved to write customs bonds. Only use a surety on this list. Available through the U.S. Department of the Treasury’s Bureau of the Fiscal Service.
ACE Portal — CBP’s Automated Commercial Environment is where bonds are filed and managed electronically. Importers and brokers both access ACE for entry filing and bond status.
National Customs Brokers & Forwarders Association (NCBFAA) — The trade association at ncbfaa.org publishes guidance on broker services, bond requirements, and regulatory updates. A useful resource for staying current.
HTS.USITC.gov — Bond amounts are calculated partly on estimated duties, which depend on HTS classification. Use the Harmonized Tariff Schedule lookup to verify duty rates before estimating bond requirements.
CBP Binding Rulings — If you’re unsure how CBP will classify or value your goods — which directly affects bond sizing — request a binding ruling at rulings.cbp.gov before your first shipment.
A licensed customs broker — The most reliable way to handle bond requirements correctly is to work with a CBP-licensed broker from your first shipment. Brokers handle bond procurement, monitor sufficiency, and file on your behalf. Search all CBP-licensed customs brokers or browse brokers by state to find one near you.
Frequently Asked Questions
What is an import bond?
An import bond (formally called a customs bond) is a legally binding contract among three parties — the importer, a surety company, and U.S. Customs and Border Protection — that guarantees payment of duties, taxes, and fees and compliance with all CBP regulations. If the importer fails to pay or comply, the surety pays CBP up