Why Single-Entry Bonds Break Down at Volume

Facts verified against CBP Directive 3510-004, 19 CFR Part 113, and CBP bond guidance on September 14, 2026.

A single transaction bond covers one entry at one port. That is the whole design, and it is why the arrangement stops working once you are importing regularly. The cost of each bond is driven by the entered value of the shipment rather than the duty on it, the amount triples for several categories of regulated goods, the bond has to be in place before every release, and it carries no Importer Security Filing coverage. A continuous bond replaces all of that with one annual instrument sized against duty. The question is not which bond is better. It is where your volume crosses the line.

A Single Transaction Bond Covers One Entry at One Port

The legal framework for CBP bonds sits in 19 CFR Part 113, and the amounts are set under CBP Directive 3510-004, Monetary Guidelines for Setting Bond Amounts. Under Activity Code 1, an importer can secure entries either transaction by transaction or continuously.

A continuous bond set under those uniform criteria is honoured across CBP rather than re-approved port by port, and it renews annually until terminated. A single transaction bond does neither. It attaches to one entry, at the port where it is filed, and then it is finished. If the same goods arrive next month at a different port, you need another one.

For an importer clearing four or five shipments a year through one gateway, that is a perfectly rational way to operate. The trouble starts when any one of frequency, value, port count, or regulatory exposure begins to climb.

Single Transaction Bond Amounts Track Entered Value, Not Duty

This is the structural problem, and it is the one most importers discover late.

For a standard consumption entry, the directive sets a single transaction bond in an amount not less than the total entered value of the merchandise plus all duties, taxes, and fees that apply. Entered value is the base. Duty is added on top.

A continuous bond works from the opposite direction. The limit of liability is fixed in multiples of $10,000 nearest to 10 percent of the duties, taxes, and fees paid during the calendar year preceding the application, with a non-discretionary minimum of $50,000. Above $1,000,000 in duties and taxes, the increments move to multiples of $100,000. Value does not enter the calculation at all.

Worth noting for anyone comparing published guides: several state that the figure is rounded up to the nearest $10,000. The directive says multiples of $10,000 nearest to 10 percent. Confirm the actual figure with your surety rather than assuming either reading.

The practical consequence is that the two instruments scale on different curves. Ship twenty containers of $80,000 goods and you are bonding $1.6 million of value in twenty separate instruments. The continuous bond covering those same twenty entries is sized against the duty you paid last year, and at ordinary duty levels that lands at or near the $50,000 floor.

The Three Times Multiplier Applies to More Goods Than Most Importers Expect

Where merchandise falls into certain categories, the directive requires a single transaction bond of not less than three times the total entered value. The listed categories cover goods subject to other agency requirements where failure to redeliver could threaten public health and safety:

Food and Drug Administration, all
Environmental Protection Agency, all
Alcoholic beverages and distilled spirits under ATF
Toys and fireworks under the Consumer Product Safety Commission, where sampled by CBP for testing
Goods subject to marketing orders under the USDA Agricultural Marketing Service
Federal Communications Commission, all
Goods subject to the Toxic Substances Control Act, all

All merchandise subject to quota or visa requirements is also in scope. Where an entry mixes covered and uncovered goods, the amount can be set at three times the entered value of the covered portion plus entered value and duties on the rest.

Read that list against a real product mix and the reach becomes obvious. Consumer electronics touch the FCC. Cosmetics, supplements and medical devices touch the FDA. Anything with a coating, a solvent or a treated component can touch TSCA. Apparel runs into visa and quota categories. A great many importers who think of themselves as ordinary commercial shippers are triple-bonding most of what they bring in, one shipment at a time.

By contrast, the directive states that bond amounts computed with the 10 percent continuous formula also apply to importations of restricted merchandise unless specific instructions mandate otherwise. The multiplier problem is a single transaction bond problem.

Every Shipment Needs the Bond Arranged Before Release

A continuous bond is a standing instrument. Once it is on file, it is simply there when the entry is filed.

A single transaction bond has to be arranged, underwritten and filed for each shipment. That is a per-shipment task with a deadline attached to a vessel or a flight, and it is one more dependency between arrival and release. Two or three times a year it is a minor administrative item. Two or three times a week it becomes a standing source of delay, and any gap in it is a hold rather than an inconvenience.

The directive does allow a port director to accept a single transaction bond unsecured by surety after a risk assessment, in narrow circumstances such as an entry of $10,000 or less in total entered value with no revenue implications, no other agency requirements, and no prospect of redelivery. It is discretionary and case by case, and it is not something an operation can plan around. Continuous bonds without surety or other security are not acceptable at all.

A Single Transaction Bond Does Not Carry Your ISF Obligation

The Importer Security Filing requirement under 19 CFR Part 149 needs its own security. The standard continuous bond conditions for basic importation and entry at 19 CFR 113.62 incorporate that obligation, so an importer with a continuous bond on file is covered for ISF as part of the same instrument.

An importer working from single transaction bonds is not. The entry bond secures the entry. The filing obligation has to be secured separately, which means a second per-shipment instrument, a second cost line, and a second thing that can be missing at the wrong moment. For ocean importers this doubles the per-shipment bond admin rather than adding to it at the margin, since ISF timing runs ahead of arrival and is unforgiving. The mechanics of that deadline are covered in our ISF 10+2 guide for ocean importers.

Working Out Where the Line Falls for Your Volume

There is no published shipment count at which CBP expects you to switch. The threshold is arithmetic, and it is specific to your profile.

Run it in this order:

Total your duties, taxes, and fees over the trailing twelve months. Ten percent of that figure, against the $50,000 minimum, gives you the continuous bond amount CBP will look for. New importers use a credible forward estimate instead of history.
Get the annual premium on that bond amount from your surety. Premium is a percentage of the bond amount set against your credit and compliance history, not a published rate, so this has to be quoted rather than assumed.
Total what you actually paid in single transaction bond premiums over the same twelve months, including any separate ISF security.
Compare. Then run step three again against next year’s expected shipment count rather than last year’s.

Most importers find the crossover arrives sooner than expected, because the single transaction side compounds on three axes at once. More shipments, higher entered values, and any drift into a three times category all push the same number up.

A Continuous Bond Can Become Insufficient Under Rising Tariffs

Switching is not the end of the exercise, and in the current tariff environment this is the part that catches people.

The continuous bond formula runs off duties, taxes and fees paid in the preceding period. When new duty layers land on goods you were already importing, your trailing duty total rises, and the bond that was correctly sized last year can fall short this year without a single change to your shipment pattern. CBP monitors this. An importer whose duty spend has climbed materially since the last renewal should expect the question rather than wait for it. The current layering of tariff programs is set out in our Section 301 and Section 232 tariff guide.

What happens next is set out in 19 CFR 113.13. Where a bond is found deficient, the principal has 15 days from the date of notification to remedy it. Where CBP determines that a bond is insufficient to protect the revenue and ensure compliance, it may give written notice to the principal and surety that additional security, in the form of a cash deposit or a single transaction bond, may be required for any and all of the principal’s transactions until the deficiency is remedied. Separately, where CBP believes accepting a transaction on a continuous bond would place the revenue in jeopardy, it may require additional security immediately.

That last point deserves emphasis. An insufficient continuous bond does not simply get topped up at leisure. It can put you back on per-transaction security across your entire entry flow, which is precisely the position you moved away from, at the least convenient possible moment. Reviewing the bond amount against duty spend twice a year is cheap insurance against it.

Single Transaction Bonds Still Make Sense in Three Situations

The instrument is not obsolete. It is fit for purpose in a narrow set of cases.

Genuinely infrequent importing. A handful of entries a year through one port, with no regulatory exposure, will not justify an annual premium.

A one-off shipment that outsizes an existing continuous bond. The directive anticipates this directly. Where a continuous bond does not cover the duty on a particular high value shipment and greater risk is suspected, a port director may secure deposit of estimated duty at release, request a single transaction bond for that shipment, or require a new continuous bond in a higher amount. For an infrequent high value import, the directive notes the single transaction bond limit may be set for the total amount of duty, taxes and fees only.

Unconditionally free merchandise. For goods that are unconditionally free and outside the three times categories, a port director may set the single transaction bond at 10 percent of the total entered value, which changes the arithmetic considerably.

Outside those cases, if you are importing on any kind of regular cadence, the single transaction bond is costing you money and adding operational risk for no compensating benefit.

If you want the crossover calculated against your own duty history rather than a rule of thumb, Clearit can size the continuous bond, arrange it, and file your entries under it. Talk to us about your bond.

Frequently Asked Questions

How many shipments before I need a continuous bond? There is no shipment count in the regulations. The switch point is financial. Compare 10 percent of your trailing twelve month duties, taxes and fees against the $50,000 minimum to find your bond amount, then weigh the annual premium against what you spend on per shipment bonds.

Does a single entry bond cover my ISF filing? No. The Importer Security Filing obligation under 19 CFR Part 149 must be secured separately. The standard continuous bond conditions at 19 CFR 113.62 incorporate it, which is one of the larger practical differences between the two instruments for ocean importers.

Why is my single entry bond three times the value of the goods? Because the merchandise falls into a category the monetary guidelines treat as higher risk. That includes goods subject to FDA, EPA, FCC or TSCA requirements, alcoholic beverages, CPSC sampled toys and fireworks, goods under USDA marketing orders, and anything subject to quota or visa requirements.

Can CBP make me increase a continuous bond mid term? Yes. Under 19 CFR 113.13 you have 15 days from notification to remedy a deficiency, and CBP may require a cash deposit or single transaction bonds across your transactions until it is fixed. Where the revenue is considered in jeopardy, additional security can be required immediately.

Does a continuous bond work at every US port? Yes. A continuous bond set under CBP’s uniform criteria covers your entries across CBP rather than being approved port by port. A single transaction bond covers one entry at the one port where it is filed.

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