Continuous customs bond: cost and coverage guide

Every commercial import into the United States needs a customs bond behind it — a financial guarantee to CBP that duties, taxes and fees will actually get paid. Most new importers never think about the bond itself; their broker just arranges one per shipment and rolls the cost into the invoice. That works fine at low volume. Then, somewhere around a dozen or so shipments a year, the per-shipment bond fee starts adding up to more than a single annual bond would cost, and nobody has told the importer that switching is even an option.

This guide walks through that exact decision point: what a single-entry bond and a continuous bond each actually cover, roughly what each costs, the CBP Form 301 filing basics, and a worked example of the point at which switching starts saving real money.

A growing importer's bond bill, before and after

Picture a five-person home-goods brand in Austin, importing ceramic planters and ceramic ware from a single supplier in Guangdong. In its first year, the company shipped four times — a container every quarter — and its customs broker arranged a single-entry bond for each shipment, priced at roughly $75 to $150 per entry depending on the declared value and the broker's minimum fee. Call it $450 for the year across four shipments. Nobody questioned it; it was a small line item buried in the broker's invoice.

By year two, the brand had added a second product line and started shipping monthly, then twice monthly during its autumn peak — eighteen entries in twelve months. At roughly $100 a shipment, that is $1,800 a year in single-entry bond fees alone, and the number keeps climbing with every extra shipment. A continuous bond, by contrast, is purchased once and covers every entry at every US port for a full year. For an importer with modest annual duty exposure, the premium for that annual bond often lands somewhere in the low hundreds of dollars — frequently less than what this brand was already paying for single-entry bonds alone, before even counting the broker's per-entry processing time it also saves.

What does a single-entry bond actually cover?

A single-entry bond (SEB) guarantees one specific import transaction — one entry, at one port, for one shipment. The bond amount is generally set at the entered value of the goods plus applicable duties, taxes and fees, though CBP requires a higher multiple of that value for certain regulated commodities such as goods subject to other federal agency requirements. Once that one entry liquidates cleanly, the bond's job is done. It doesn't carry forward to your next shipment, and it doesn't cover a shipment arriving at a different port the same week.

For a business that imports rarely — a one-off equipment purchase, a single trade-show sample shipment, an occasional container a couple of times a year — a single-entry bond is simple and proportionate. You pay for exactly the coverage you use, once, and walk away. The friction only shows up once volume climbs: every entry means another application, another small fee, and another point where a delay in arranging the bond can hold up cargo at the port.

What does a continuous bond cover, and what does it cost?

A continuous bond covers every entry you file at every US port of entry for twelve months from the effective date, renewing automatically unless you or the surety cancels it. Instead of a bond amount tied to one shipment's value, CBP sets a minimum continuous bond amount of $50,000 or 10% of the duties, taxes and fees you paid in the prior twelve months, whichever is greater — CBP's own formula and any adjustments to it should be verified directly with CBP or your surety before you rely on a specific figure here.

The premium you actually pay a surety for that bond is a small percentage of the bond amount — commonly in the low single digits as an annual rate for importers with clean compliance histories, though the exact rate depends on your bond amount, your import history, and the surety's own underwriting. A newer importer with no track record, or one bringing in commodities that carry higher compliance risk, can expect to pay a higher rate or be asked to post collateral until a payment history is established.

Single-entry bond vs continuous bond

Who actually needs a customs bond?

The obligation sits with the importer of record — the person or company named on the entry as legally responsible for the goods, the duties owed, and compliance with every applicable regulation. If you are the importer of record on a commercial shipment valued over the formal-entry threshold, CBP requires a bond behind that entry, full stop; there is no volume low enough to opt out once you're above the informal-entry line. Many first-time importers assume their freight forwarder or customs broker "handles the bond" in some abstract sense — in practice, the broker typically arranges it on your behalf, but you, the importer of record, are the party actually bound by its terms and financially on the hook if a claim is made against it.

Customs brokers describe the bond conversation as one of the most-skipped steps in onboarding a growing importer — everyone focuses on classification and duty rate, and the bond just gets rolled forward from whatever the freight forwarder set up on the first shipment, long after it stopped being the cheapest option.

How do you actually get a continuous bond — what is CBP Form 301?

CBP Form 301 is the customs bond form itself — the document that formally establishes the surety's obligation to CBP on your behalf, whether it's a single-entry or continuous bond. Most importers never fill it out by hand; a licensed customs broker or bond agent working with an approved surety files it electronically, then the bond is activated against your importer number. You'll need your business's legal name, your importer of record number (an EIN for most US companies), and, for a continuous bond, enough import history for the surety to calculate the bond amount.

• Confirm your importer of record number (typically your EIN) is active and correctly registered with CBP.
• Gather your prior twelve months of duties, taxes and fees paid, if you have import history — this drives the bond amount calculation.
• Choose an approved surety, usually through your customs broker, who is licensed to underwrite CBP bonds.
• File Form 301 electronically; most brokers can activate a continuous bond within a few business days once underwriting clears.
• Keep the bond current — a lapsed or cancelled continuous bond can hold up an entry at the port exactly when you can least afford the delay.

When should an importer switch from single-entry to continuous?

Run the maths on your last twelve months: total up what you actually paid across all your single-entry bond fees, then get an actual continuous-bond quote from your broker or a surety for the same period. If the continuous bond's annual premium is close to or below what you spent on single-entry fees, the switch pays for itself even before counting the operational upside — one bond to track instead of one per shipment, one renewal date instead of scrambling to arrange coverage before every container clears.

Speed matters too. A continuous bond that is already active lets your broker file the entry the moment cargo arrives, rather than waiting on a single-entry bond application to clear underwriting first — often worth more than the fee saving alone.

Frequently asked questions

None of this is legal, customs, or tax advice, and bond amounts, minimums and CBP's calculation formula can change — verify the current requirements with CBP or a licensed customs broker before you file Form 301 or commit to a bond amount.