An unexpected U.S. customs bill is usually not one fee. Your invoice may combine a government duty, a government entry charge, and a private carrier or broker fee. Those amounts follow different rules.

The amount can depend on the product, country of origin, declared value, entry method, and any exception that applies. Price alone isn't enough.

This is U.S.-focused. Commercial exporters and IP holders may need different filings and professional advice.

Separate customs duty from other charges

Customs duty is the tariff assessed on imported merchandise. A processing charge is different. A carrier may collect government charges and add a private service or advancement fee under its shipping terms.

Turns out, an invoice labeled "customs" can bundle public charges and private services.

One invoice can contain several categories. Do not compare the total with a random percentage online.

The old $800 assumption is unsafe

Many shoppers still see an $800 threshold in old buying advice. Do not treat it as an automatic free pass.

CBP's E-Commerce Frequently Asked Questions says the de minimis suspension applies to merchandise valued at $800 or less arriving through all modes, including the international postal network, unless the shipment is specifically excepted under separate authority. A low-value commercial order may therefore require entry and duty treatment.

The Federal Register interim final rule dated June 24, 2026 addresses the suspension for modes other than the international postal network. The transportation method still matters.

CBP also describes a bona fide gift as an article previously owned by a donor and given outright to a donee without compensation or a promise of compensation. An online retail purchase is not automatically a qualifying gift.

Who can file the entry?

Under 19 C.F.R. 143.26(a), CBP's FAQ says an entry may be made by the owner or purchaser, or by a licensed customs broker properly designated by the owner, purchaser, or consignee. Ask who filed your entry.

CBP's Internet Purchases guidance says purchases valued at less than $2,500 may, in most cases, use an informal entry. Courier shipments are usually processed through a broker hired by the courier. Usually matters.

When an Entry Type 13 process is used, CBP says a basic importation and entry bond is required. That is an entry requirement, not a standard IP enforcement fee charged to every shopper.

Keep the broker's name and entry number.

Check the bill before paying

Use this order. It keeps the dispute focused.

1. Read the checkout and shipping terms. Look for whether duties are included or billed on delivery, and save a screenshot.
2. Match the invoice to your order. Check the product description, quantity, declared value, origin, tracking number, and the person or company named as importer.
3. Ask for entry details. Request the entry type, tariff classification, duty calculation, government charges, and private carrier or broker charges.
4. Check the customs declaration. For international mail, CBP says a completed CN 22 or CN 23 can help speed examination. It does not guarantee a particular duty result.
5. Keep all records. Save the order confirmation, commercial invoice, payment proof, tracking history, customs notice, and emails.
6. Ask for a written correction. A phone explanation is not enough when money or release of goods is at stake.

If the amount looks wrong

Start with the party that imposed the charge. A private carrier or broker fee goes first through that company's billing process and the seller's shipping terms. A CBP assessment should be reviewed with the filing broker, who can explain whether a correction or formal customs remedy is available.

Thing is, a carrier billing dispute and a customs protest are not the same complaint. One concerns a private invoice. The other concerns a government decision.

Do not rely on a generic 10-day, 30-day, or 90-day deadline. The applicable date can depend on the notice, entry status, charge type, and filing route. Ask for the deadline in writing.

To be honest, a phone promise is weak evidence. Get the answer and any refund decision by email.

For high-value goods, a seizure, a suspected counterfeit, or a forced-labor concern, consult a licensed customs broker or trade lawyer before reshipping or destroying anything.

IP and humanitarian claims need specific authority

IP and human-rights claims can affect whether goods are released, but they do not create a universal consumer fee schedule.

An IP recordation is an enforcement step for a rights holder. It is not automatically a $200 charge to the shopper, and you should not assume that every suspected trademark case carries a 200 percent penalty.

A humanitarian purpose also does not automatically make a shipment duty-free. Any exemption depends on a specific tariff provision or agency program and the evidence that program requires.

Be skeptical of blanket statements that:

• all humanitarian goods enter at zero duty;
• general WTO principles alone waive U.S. duty;
• every IP case uses the same bond, fee, or penalty.

A hold or seizure is an enforcement matter, not simply a bad invoice. Keep the notice intact, and don't relabel, reship, or destroy the goods without understanding the instruction.

What a consumer can realistically challenge

You can ask for an itemized invoice, the entry information available to you, and the reason a shipment is being held. You can also compare the charge with the seller's delivery terms and challenge a private billing error through the carrier or broker.

Those steps do not guarantee a refund. Customs duty, a broker's fee, and a seller's promise may each have a different decision-maker.

Do not assume every charge above 5 percent is illegal, that every importer gets a 30-day appeal window, or that every overpayment is refunded within 90 days. Those are not safe blanket rules.

Before you pay, request the itemized invoice and the entry details. That tells you whether the next call belongs with the seller, the carrier, the broker, or CBP.