US Customs Bond: Single Entry vs Continuous, Which to Buy
If you import goods into the United States, sooner or later a customs broker will ask you a question that sounds simple and is not: do you want a single entry bond or a continuous bond? Most first-time importers answer with whatever the broker quotes first, and many pay for that shortcut later, either through fees stacked on every shipment or through a surprise bond increase that stops cargo at the port.
The choice matters more in 2026 than it did a few years ago. Tariff actions in 2025 multiplied the duty bills of many importers, and bond requirements followed on a lag. CBP data reported in February 2026 showed 27,479 bond insufficiencies in fiscal year 2025, worth nearly $3.6 billion, the highest count and value ever recorded. Surety companies have also reported individual bond increases of more than 200 percent in early 2026. A bond that was perfectly adequate in 2023 may be undersized today.
This guide explains what each bond type covers, how the amounts are calculated, what they cost, where the break-even point sits, and how to choose based on your shipping pattern rather than on a salesperson’s preference. It is written from the freight forwarding side of the desk, where bond problems show up as held containers, storage charges and missed delivery windows. Bond policy can shift through CBP guidance without formal rulemaking, so confirm current figures with your surety or broker before you buy.
What a US Customs Bond Is and Why You Need One
A customs bond is a three-party contract between the importer (called the principal), a surety company approved by the US Treasury, and US Customs and Border Protection (CBP), the party the bond protects. The surety promises CBP that if you fail to meet your import obligations, CBP can collect from the surety up to the bond limit, and the surety then pursues you for reimbursement. It is not insurance for you. It does not cover damaged cargo, and it does not pay your duties in the ordinary course. It exists so that CBP can release your goods first and collect later.
In practice, a bond is required for most commercial formal entries, generally those valued above $2,500, and for many lower-value shipments that fall under the rules of other agencies such as FDA, USDA or CPSC. The suspension of duty-free de minimis treatment in 2025 pushed a wave of small ecommerce sellers into formal entry for the first time, and with it into the bonding system.
What the bond actually guarantees
The bond secures several obligations at once. It guarantees payment of duties, taxes and fees. It guarantees that you will redeliver goods if CBP demands them back, for instance after a failed admissibility review, a marking problem or a recall. It backs your compliance with the Importer Security Filing (ISF) rules, where a violation carries liquidated damages of $5,000 per violation. And it supports the general duty to follow customs laws and regulations. If a CBP demand goes unpaid, the surety pays, up to the bond amount.
One point surprises many importers. Paying a CBP bill does not reduce or use up the bond. The bond amount is a ceiling on the surety’s exposure for each bond period, not a balance that you draw down.
Why your broker’s bond does not cover you
A customs broker files entries on your behalf under a power of attorney, but the broker’s own bond does not cover your liabilities as importer of record. If you are the importer of record, you need your own bond, either single entry or continuous. Non-resident importers, including many Chinese exporters who act as importer of record on DDP shipments, must also name a US agent for service of process on the bond. CBP Form 301 is the standard form for both bond types, and you tick one box or the other, never both.
Single Entry Bond: How It Works
A single entry bond, formally called a single transaction bond, secures exactly one import transaction. You identify that transaction on the form, usually by entry number, or by a unique ISF transaction number when the bond is for ISF only. The bond date has to be the same as or earlier than the transaction date, which is why bonds that are arranged after the vessel has already arrived cause so many headaches.
How the amount is calculated
For a standard importer entry, the bond amount is generally the total entered value plus all duties, taxes and fees, rounded up to the next whole dollar. A container of furniture valued at $60,000 that attracts $15,000 in duties and fees therefore needs a bond of about $75,000. Because the amount tracks each shipment, a single entry bond for a high-value load can be large even though your annual volume is small.
Special regimes behave differently. Antidumping and countervailing duty entries, for example, do not follow a neat formula, and the amount is set case by case with CBP and the surety. If your product falls under such an order, speak to your broker before the cargo sails, not after it arrives.
Typical cost and timing
Single entry premiums are priced per shipment, and many sureties apply a minimum premium, so small and mid-sized bonds often end up costing about the same. As a rough reference, a $10,000 single entry bond commonly costs $50 to $75, and a standalone single transaction ISF bond for a one-off shipment often runs $50 to $150. Your broker will usually add a handling fee on top. Larger bonds cost more, and a bond for a six-figure shipment can run into the low hundreds of dollars.
Issuance is quick when your broker already has an account with a surety, often within hours. The catch is that the bond must exist before the entry is filed. For ocean freight that means before the vessel arrives, and for ISF purposes before the cargo is loaded overseas.
Where a single entry bond fits, and where it hurts
Single entry bonds suit trial orders, occasional importers who ship fewer than three or four times a year, and situations where CBP has asked for extra security on top of an existing continuous bond. They also make sense when a one-off consignment is unusually large and you do not want a continuous bond sized around a single exceptional event.
They hurt when volume grows. Every shipment needs fresh paperwork, every shipment carries a new premium, and every missed bond means a delay. The most common mistake we see is reactive single entry bonding by newer importers whose formal entry volume already justifies a continuous bond.
Continuous Bond: How It Works
A continuous bond, filed under Activity Code 1 for importers, covers all of your entries at all US ports for a one-year term and renews automatically each year unless someone terminates it. Only one continuous bond per activity can be on file for each principal, and it must be approved by CBP’s Revenue Division. Either the principal or the surety can terminate it with 30 days’ written notice to CBP, and a lapse in coverage is exactly what you want to avoid, because the next shipment would need a single entry bond at short notice.
Unlike the single entry bond, the continuous bond is sized to your overall duty profile rather than to any one shipment. That makes it far more convenient for regular importers, because once it is on file your broker can file entries without any bond paperwork, and your ISF filings are generally covered as well. Confirm ISF coverage with your surety when you apply.
How CBP sizes a continuous bond
CBP’s standard formula sets the bond at 10 percent of the duties, taxes and fees you paid over the previous 12 months, with a minimum of $50,000. That $50,000 floor is a policy minimum in CBP guidance rather than a regulatory one, since the regulatory floor for any customs bond is only $100. Because it is policy, CBP can change it without rulemaking, and importers should budget for higher minimums rather than lower ones.
The table below shows how the formula plays out at different import volumes. The figures are illustrations of the 10 percent rule, and the exact rounding and final amount are set by CBP and the surety.
| Duties, taxes and fees paid in prior 12 months | 10 percent calculation | Likely continuous bond amount |
| $100,000 | $10,000 | $50,000 (policy minimum applies) |
| $400,000 | $40,000 | $50,000 (policy minimum applies) |
| $750,000 | $75,000 | About $75,000 |
| $1,200,000 | $120,000 | About $120,000 |
| $3,000,000 | $300,000 | About $300,000 |
Notice how many small and mid-sized importers sit at the $50,000 floor. That is also why a sudden tariff increase can change the picture so quickly. An importer who paid $100,000 in duties last year and pays $500,000 this year will find the bond requirement rising after CBP’s next review.
What a continuous bond costs
Premiums depend on the bond amount, the surety’s appetite and your credit profile. A $50,000 continuous bond is commonly priced in the low-to-mid hundreds of dollars per year for a financially sound importer, while a $100,000 bond can run roughly $500 to $2,000 annually. New companies, thin financials or prior CBP penalties can push the price up, and some sureties ask for collateral such as a letter of credit or a cash deposit for larger bonds.
Sufficiency reviews and why bonds keep growing
CBP reviews the sufficiency of every active continuous bond monthly. If your trailing duties, taxes and fees suggest that the bond is too small, CBP flags it as insufficient and the surety asks you to increase it through a bond rider. Since the formula reads trailing figures, reviews in 2026 reflect the duty outlays of late 2024 and all of 2025, a period in which tariffs rose sharply for many product categories. This is the main reason importers who set up a bond two years ago are now receiving notices.
Ignoring a notice is expensive. Where CBP judges revenue to be at risk, it can require cash deposits or single entry bonds on individual shipments, hold goods at the port until security is posted, and apply liquidated damages to entries already filed. In other words, a continuous bond that is too small can leave you paying single entry bond costs on top of your continuous premium, and still facing delays.
Managing a continuous bond over time
A continuous bond works best when someone owns it. Assign the task to a named person, whether that is your logistics manager, your finance lead or your forwarder, and set a quarterly reminder to compare your trailing 12 months of duties, taxes and fees against the bond amount. If the ten percent figure is approaching your bond limit, ask the surety to arrange a rider before CBP asks. Also record the anniversary date, because the bond is a separate bond for each annual period, and keep the surety’s contact details on file for urgent changes.
It is also sensible to tell your surety about expected changes, such as a new product line, a switch of sourcing country or a plan to import under a new legal entity. Sureties prefer to hear about growth early, and a good relationship tends to make rider approvals faster when you need them.
Single Entry vs Continuous Bond: Side-by-Side Comparison
The following table summarizes the practical differences between the two bond types.
| Factor | Single entry bond | Continuous bond |
| Coverage | One import transaction | Unlimited entries at all ports for 12 months |
| Bond amount | Entered value plus duties, taxes and fees | 10 percent of prior-year duties, taxes and fees, minimum $50,000 (policy) |
| Typical premium | Roughly $50 to $75 for a $10,000 bond, higher for large values | Often a few hundred dollars for $50,000; $500 to $2,000 for $100,000 |
| Paperwork | New bond for each shipment | Filed once, renews automatically |
| Sufficiency review | None after issuance | Monthly CBP review, with possible increase requests |
| Best for | Occasional or one-off importers | Regular importers and growing ecommerce brands |
| Main risk | Cost and delay add up with each shipment | Undersizing leads to insufficiency notices and holds |
The Break-Even Point: How Many Shipments Justify a Continuous Bond
The economics are simple enough to run on the back of an envelope. Take a single entry bond at roughly $75 premium plus $25 in broker handling, so about $100 per shipment, and a $50,000 continuous bond at an assumed $450 per year. The illustration below shows where the lines cross.
| Shipments per year | Single entry total (about $100 each) | Continuous bond (about $450 per year) |
| 2 | $200 | $450 |
| 4 | $400 | $450 |
| 5 | $500 | $450 |
| 10 | $1,000 | $450 |
| 24 | $2,400 | $450 |
On these assumptions, the crossover is somewhere around four to five formal entries per year. That fits the rule of thumb used across the industry: fewer than three or four shipments a year leans single entry, and regular importing leans continuous. Treat the numbers as an illustration, because your actual premiums, minimum charges and broker fees will differ.
Two adjustments push the break-even earlier. First, high-value shipments cost more to bond individually, so an importer who ships a few $200,000 containers a year may already be ahead with a continuous bond. Second, the value of avoiding delay is not in the table. One missed bond can mean a held container, and a few days of port storage and demurrage can cost more than a year of continuous premiums.
Which Bond Fits Which Importer: Practical Scenarios
The new Amazon FBA or DTC seller
A seller testing a product with one LCL shipment of 200 cartons should usually start with a single entry bond. It is cheap, fast and carries no annual commitment. But the moment the product works and you plan monthly or even quarterly replenishment, move to a continuous bond. Many sellers wait too long, buying single entry bonds six or eight times a year because switching felt like a hassle.
The seasonal importer
Gift, holiday and garden goods importers often ship heavily for four months and barely at all for the rest of the year. Even with long quiet periods, a continuous bond often wins if you bring in five or more containers in the season, because the annual premium is fixed and the paperwork is done once. Mind the renewal date, though. A bond that lapses in the quiet months and has to be rebuilt in September is a classic cause of peak-season delays.
The one-off bulk buyer
A restaurant group importing a single container of furniture, or a business bringing in equipment for a new facility, has no reason to hold an annual bond. A single entry bond matches the exposure exactly. The thing to watch is the amount, since a high-value load means a high bond limit, and your surety may ask about the importer’s financial standing.
The fast-growing brand
Growth is where continuous bonds quietly cause problems. A brand that doubled its imports last year will see CBP’s formula catch up in the following review cycle, and an insufficiency notice can arrive with little warning. If you are growing, ask your surety to model next year’s requirement now, and raise the bond voluntarily before CBP forces the issue.
The importer with heavy tariff or AD/CVD exposure
Products subject to Section 301, Section 232 or antidumping and countervailing duties push up the duty base on which the continuous bond is calculated, and AD/CVD entries often need separate security. Expect the surety to look harder at your financials. In some cases a combination works best: a continuous bond for ordinary entries plus single transaction bonds for the entries that need special treatment.
What Has Changed in 2026: Market Conditions to Factor In
Three developments shape the 2026 decision. First, the end of duty-free de minimis treatment moved many small shipments into formal or informal entry processing, and sellers who once relied on postal or express channels now need an importer of record and a bond. Second, tariff volatility from 2025 pushed duty payments up, and because CBP’s formula reads trailing figures, the bond increases are still working through the system. Third, CBP continues its monthly sufficiency reviews, so the record number of insufficiencies in fiscal year 2025 is unlikely to be a one-year anomaly.
The practical message is to budget for a higher bond, not a lower one. Reports in 2026 also pointed to possible further tightening of the bonding regime, including a higher continuous bond minimum. Because the $50,000 figure is a matter of CBP policy rather than regulation, it can move without a formal rule change. If you are a borderline case, a continuous bond placed now at the current level gives you a baseline, and any later increase would come through the normal rider process.
For China-US importers the effect is sharper still. Goods from China typically carry the heaviest layers of additional duties, which raises the duty base, which raises the bond. A shipper moving ten containers a year from Shenzhen can now be in a very different bond bracket from the same shipper in 2023, even with identical volumes.
Bonds and the Importer Security Filing
ISF deserves its own mention because it is where bond mistakes surface earliest. For ocean cargo, the importer security filing must be transmitted before the goods are loaded onto the vessel at the foreign port, and it has to be supported by a bond. Late or inaccurate filings carry liquidated damages of $5,000 per violation, which can exceed the cost of an entire year of bond premiums in a single shipment.
If you already hold a continuous bond, confirm that it covers ISF so your forwarder can file without delay. If you do not, a single transaction ISF bond is available for one-off shipments, and a standalone continuous ISF bond is an option for filers who do not need a full importer bond. Either way, settle the question before the booking is confirmed, not after the container gates in at Yantian or Shekou.
A Worked Example: What the Wrong Choice Costs
Consider a Shenzhen-sourced homewares brand that began importing in January. It ships one 40-foot container each month, each carrying goods valued at $45,000 with about $18,000 in duties and fees because of the layered additional tariffs on Chinese goods. Following the standard approach, each entry needs a single entry bond of roughly $63,000. At a premium and handling charge of, say, $120 per bond, the brand spends about $1,440 across the year, and every one of those twelve bonds has to be arranged before the cargo is filed.
Now suppose the same brand places a continuous bond in January. Its duties in the first year come to roughly $216,000, so the 10 percent formula gives $21,600 and the $50,000 policy minimum applies. At an assumed premium of $450, the brand saves close to a thousand dollars in direct costs. The larger saving is operational: no bond paperwork on twelve occasions, no risk of a forgotten bond holding a container, and one document for the finance team to track.
The picture changes in year two. If the brand doubles its volume and its duty payments reach $430,000, the formula calls for a bond of about $43,000, still under the floor, so no increase is needed. But if tariff rates rise and duties reach $700,000, the requirement jumps to about $70,000, and the brand should expect a rider request. A brand that anticipated that move and asked its surety to raise the bond early would pay a modest extra premium. A brand that ignored the first notice could face single entry bonds on top of the continuous bond and delays at the port.
Common Bond Mistakes That Delay Freight
The first mistake is buying the bond after the cargo is already on the water. For ISF purposes the bond has to be in place before the filing, and for entry it has to be in place before the entry is submitted. Leaving it until the vessel is two days from arrival invites a rushed, expensive single entry bond and sometimes a missed filing deadline.
The second is assuming the broker’s bond protects you. It does not, and importers who learn this at the filing stage lose days. The third is forgetting about renewal and termination. A continuous bond renews automatically, but if the surety terminates it, or if you change sureties without a clean handover, a gap in coverage can appear. Thirty days’ notice is the standard, so keep the dates visible.
The fourth is ignoring sufficiency notices. Importers sometimes treat them as routine paperwork and let them sit in an inbox. The surety will chase you, CBP can require extra security in the meantime, and paying the bill promptly and responding quickly to notices is the cheapest insurance against escalation.
Finally, many importers fail to align the bond with their real business structure. If you import under more than one company name, or a foreign seller acts as importer of record on some shipments and you do on others, make sure each principal has the right bond and that the broker’s power of attorney matches the importer named on the entry.
How to Buy a Customs Bond: The Process
Customs bonds are placed by Treasury-approved sureties, usually through a licensed customs broker or a specialist bond agent. You will need your legal company name, address and tax or importer number, details of the person signing for the company, and for non-resident importers, a US agent for service of process. Sureties will ask about your import history and expected volume, and for larger or riskier bonds they may request financial statements.
Once approved, the surety issues the bond on CBP Form 301, files it electronically with CBP, and your broker can begin filing entries against it. For a continuous bond, ask the surety for the effective date, the renewal date, the bond amount and the process for increases. Store that information where your logistics team can see it. It is also worth asking whether the bond covers ISF, since some importers buy a separate ISF-only bond: a continuous ISF-only bond has a $50,000 minimum, and a single-shipment ISF bond has a $10,000 minimum.
Compare at least two quotes, but compare like with like. A cheaper premium on a bond with a lower limit is not a cheaper bond if CBP declares it insufficient in three months.
How Topway Shipping Helps With Customs Bonds and China-US Clearance
Bond decisions rarely happen in isolation. They sit inside a larger set of choices about routing, incoterms, who acts as importer of record and when cargo clears. Topway Shipping, headquartered in Shenzhen, has been a professional provider of cross-border e-commerce logistics solutions since 2010. Our founding team brings more than 15 years of experience in international logistics and customs clearance, with a strong focus on China-US transportation, and that experience shapes how we look at bond questions.
Our services span the whole logistics chain: first-leg transportation, overseas warehousing, customs clearance and last-mile delivery, along with flexible FCL and LCL ocean freight from China to major ports worldwide. When a new client asks about bonding, we start from their shipment calendar rather than from the bond. How many entries will they file this year? How big are the containers? Is the importer of record a US company or the seller in China? Who is paying duties? With those answers we can work with licensed customs brokers and surety partners to place the right bond, whether that is a single entry bond for a first LCL trial or a properly sized continuous bond for a seller moving containers every month.
We also help clients avoid the delays that make bond problems expensive. Because we coordinate the first leg, the ocean booking, the ISF timing and the clearance, we can make sure the bond is in place before the cargo is loaded, flag when volume growth is likely to trigger a bond increase, and keep your goods moving into our overseas warehouse or onward by last-mile delivery. If you are planning your next shipment from China and are not sure which bond to buy, talk to our team before you book.
Conclusion
The decision between a single entry bond and a continuous bond is less about the bond and more about your shipping pattern. If you import occasionally, for a trial order or a one-off project, a single entry bond is cheap, fast and proportionate. If you import regularly, the crossover point is typically around four or five formal entries a year, after which a continuous bond is cheaper and far less likely to cause delays.
Just as important is what happens after you buy. In 2026, with CBP running monthly sufficiency reviews and fiscal year 2025 setting a record for insufficiencies, a continuous bond is not something to set and forget. Review the amount against your trailing duties at least quarterly, plan for growth, and respond to any notice right away. Placed on time and sized properly, a bond is one of the cheapest parts of your landed cost. Placed late or sized wrong, it becomes one of the most expensive.
FAQs
Q: Do I need a customs bond if I only ship once?
A: Yes, if the shipment is a formal entry, generally valued above $2,500, or is regulated by another agency. A single entry bond is the usual choice for a one-off import.
Q: Can I switch from single entry bonds to a continuous bond later?
A: Yes. You can apply for a continuous bond at any time, and once it is on file your broker will use it for later entries. Only one continuous bond per activity can be on file for each importer.
Q: How much is a continuous customs bond in 2026?
A: CBP generally sizes it at 10 percent of the prior year’s duties, taxes and fees, with a $50,000 policy minimum. Premiums vary, but a $50,000 bond is often a few hundred dollars per year, and a $100,000 bond roughly $500 to $2,000, depending on the surety and your credit.
Q: What happens if CBP says my bond is insufficient?
A: Your surety will ask you to increase the bond through a rider. Until it is fixed, CBP can require single entry bonds or cash deposits on individual shipments and may hold goods at the port.
Q: Does my freight forwarder or broker’s bond cover my imports?
A: No. As importer of record you need your own bond, either single entry or continuous. A forwarder such as Topway Shipping can coordinate with licensed brokers and sureties to place it before your cargo ships.
