A U.S. customs bill can contain two different disputes. A CBP assessment may be challenged through a formal protest, while a carrier or broker's private fee usually requires a billing dispute with that company.

The first task isn't filing a form. It's finding out who charged you and why. An unexpectedly high bill isn't automatically a rights violation.

This guide is U.S.-focused. If the goods entered another country, that country's customs process controls.

First, identify who charged you

Look at every line on the invoice. One payment request can combine government charges with private service fees.

A successful CBP protest can correct a government assessment. It does not automatically cancel a separate brokerage invoice.

Build the record before you complain

Get the documents first. Phone explanations vanish quickly.

• Retailer invoice, order confirmation, and proof of payment
• Carrier or broker invoice, payment receipt, and tracking record
• Entry number, importer of record, entry summary, and liquidation or reliquidation notice
• Product description, quantity, materials, model information, and photos
• Emails, chat messages, delivery terms, and any promise about prepaid duties

Keep the originals. Send copies unless an agency specifically requests otherwise.

The number to circle is the entry number. The other number that matters is the date of the CBP decision, which may be earlier than the day your courier sent its invoice.

Use this seven-step workflow

1. Check the arithmetic. Compare the charged duty, tax, merchandise value, shipping amount, and private fees with your order and entry documents.

2. Ask for an itemization. Request, in writing, which amount was sent to CBP and which amount the carrier or broker kept as its own charge. Ask for the entry number and the service or contract term supporting each private fee.

3. Check the entry status. Find out whether the entry has liquidated. Liquidation is CBP's final computation of duties for an entry. If it has not occurred, a different correction process may apply.

4. Match the problem to the decision. A wrong value, classification, origin, or duty rate may point to a CBP dispute. A duplicate brokerage charge points to the carrier or broker.

5. File the formal protest when appropriate. Use the ACE Protest application or follow CBP's filing instructions. Identify the entry, the decision being challenged, the facts, the requested correction, and the supporting records.

6. Open the private dispute separately. Tell the carrier, broker, or seller exactly which line you contest. A request for a government refund does not replace this step.

7. Track every deadline and response. Save submission confirmations, case numbers, emails, and dates. If the protest is denied or the amount is substantial, ask a customs attorney what review options remain.

An email can clarify a bill. It should not be treated as a substitute for a formal filing.

What a CBP protest actually covers

Under 19 CFR Part 174, a protest generally must be filed within 180 days of the relevant decision for an entry made on or after December 18, 2004. Entries made before that date are subject to a different 90-day rule.

For many modern disputes, the relevant decision is liquidation or reliquidation. The clock may therefore begin before a carrier sends its final invoice. Check the entry history instead of counting from the delivery date.

CBP decisions that may be protestable include the liquidation of an entry, tariff classification, appraised value, and the rate or amount of duties assessed. The exact issue matters. A claim that a courier charged too much for its own service is not automatically a protest against CBP.

CBP says protests and petitions are generally filed on CBP Form 19. Its official protest guidance also explains the ACE Protest application. The statute does not require the exact paper form in every case, but your filing still needs to provide the information CBP requires.

Many shoppers are not the importer of record. If that is your situation, ask the seller or broker who appears on the entry and who is authorized to file. Do not assume a customer-service representative can change the customs record.

Broker and carrier fees need a second track

Turns out, the duty can be correct while the total invoice is wrong. A carrier may collect CBP amounts and add its own brokerage, advancement, storage, or processing charges on the same page.

Ask for a written breakdown. Then compare each private charge with the shipping terms, order confirmation, and broker agreement. Look for duplicate services, charges for a service you declined, or a fee that does not match the quoted terms.

If a broker's filing error caused the wrong duty assessment, keep both disputes open. You may need to seek correction of the CBP entry and separately ask the broker to address its mistake or fee.

If you paid by credit card, ask the card issuer whether its billing-dispute procedure applies. That process is separate from CBP and has its own eligibility rules and deadlines. Don't describe a charge as unauthorized unless that is actually true.

Seizures follow the notice, not the ordinary bill

Thing is, a seizure is not just an expensive customs invoice. It may involve an enforcement action, forfeiture process, restricted goods, or an allegation that needs a specific response.

Read the notice from top to bottom. Identify the agency, property description, response deadline, filing method, and official address. Keep the envelope or electronic delivery record.

For a federal administrative forfeiture matter covered by 28 CFR 9.3, a petition must contain clear and concise information. Factual statements and supporting documents may need a declaration under penalty of perjury. Use the instructions in your notice because not every seizure follows the same route.

Do not wait for a broker to finish investigating before protecting the response deadline. If the goods are valuable, restricted, or tied to a possible penalty, legal advice may be worthwhile.

Escalate without losing the paper trail

Keep escalation proportional to the problem.

This is general information, not legal advice. Judicial and administrative deadlines can depend on the type of entry, decision, notice, and party involved.

Questions readers often have

Can I protest a courier's brokerage fee with CBP?

Usually, no. A CBP protest challenges a protestable government decision. A courier's own brokerage or processing fee usually belongs in a written billing dispute with the courier or broker.

When does the 180-day customs protest period begin?

For qualifying modern entries, the period generally runs from the relevant CBP decision, often liquidation or reliquidation. It does not necessarily begin when the package arrives or when the courier emails its invoice.

Can a consumer file if the seller handled customs?

First find out who is importer of record and who controls the entry documents. The seller or broker may need to provide records or submit the filing, depending on the entry and the parties involved.

Does a refund from the seller settle the customs issue?

Not always. A seller may reimburse you under the order terms, but that does not necessarily change the CBP entry or resolve a separate carrier fee.

Start by requesting an itemized bill and recording the entry number, liquidation date, and source of every charge. That small step tells you whether to open a CBP protest, a private billing dispute, or a seizure response.