An unexpected customs bill isn't automatically an improper charge. Before disputing it, mark each line as one of three things: a CBP assessment, a carrier or broker fee, or an import amount collected by the seller. Those charges can appear together, but they don't have the same refund route.

A correct duty won't disappear just because it was unexpected or expensive. A refund request is more persuasive when the records show an incorrect value, classification, origin, duplicate charge, or a conflict with the terms shown at checkout.

Start with the invoice

The word "customs" appears on many invoices. It doesn't necessarily mean that the money was charged by U.S. Customs and Border Protection.

CBP's Internet Purchases guidance says purchases valued at less than $2,500 and shipped by mail or freight may, in most cases, enter as informal entries. Courier shipments are commonly cleared by a customs broker hired by the delivery company. Postal packages follow a different process.

That distinction is practical, not just technical. A carrier can pass along a CBP assessment and add its own fee. Challenging the private fee is different from challenging the customs decision.

Facts that can support a refund request

These problems can justify asking for a correction, refund, or seller reimbursement:

• The seller or broker declared the wrong price, quantity, product, or country of origin.
• The tariff classification appears inconsistent with the goods.
• The same duty, tax, or carrier charge was collected twice.
• A carrier invoice includes a fee that conflicts with the service terms or order agreement.
• The seller said import charges were included, then billed you again without a clear explanation.
• A returned or refused shipment was handled in a way that conflicts with the return terms you accepted.

None of these points guarantees a refund. The checkout page, commercial invoice, entry information, carrier terms, and return records may tell different parts of the story.

Don't ask a seller or broker to describe merchandise falsely, reduce its value without a factual basis, or label a commercial shipment as a gift. A misstatement can lead to delays, penalties, or a harder customs review.

Build a paper trail before you call

1. Save the records

Download or photograph the following before a web page or message disappears:

• Order confirmation and checkout page
• Wording such as "import fees," "duties included," or similar terms
• Seller's commercial invoice
• Carrier invoice and tracking record
• Proof of payment
• CN22 or CN23 customs forms, if available
• Emails, chat transcripts, and notes from phone calls
• Return, refusal, or export records if the goods went back

Remove passwords, full card numbers, and other information the recipient doesn't need.

2. Ask for the entry details

Write to the carrier or broker and request the records behind the bill. Ask for:

• Entry number and entry type
• Name of the importer of record
• Liquidation date, if the entry has been liquidated
• Declared customs value
• Tariff classification
• Country of origin
• Quantity and product description used
• Government assessment separated from carrier or broker fees
• Exchange rate and calculation used, if currency conversion is involved

You might not receive every document, especially if the seller or carrier acted as importer of record. The request still helps identify who can correct the entry and who received each payment.

For a postal shipment, ask the seller whether it kept the CN22 or CN23 declaration. CBP says a completed postal customs form can help speed examination at an International Mail Branch and can also show what information was declared.

3. Compare the entry with the actual transaction

Look at the underlying facts rather than arguing only about the total:

• Does the declared value match the invoice?
• Is the product description accurate?
• Is the quantity right?
• Is the country of origin correct?
• Did you already pay an import-fee deposit?
• Is there a separate brokerage or advancement fee?
• Does any line appear twice or include an unexplained adjustment?

The order subtotal isn't necessarily the same as customs value. If the numbers differ, ask the broker to explain the calculation before claiming that the entire assessment is wrong.

4. Dispute the carrier or broker fee in writing

Use the carrier's billing or customs-dispute channel. Include the invoice number, tracking number, amount disputed, specific line item, and supporting documents. Say whether you challenge the government assessment, the private fee, or both.

A complaint can be as direct as this:

Subject: Written dispute of customs invoice [invoice number]

I dispute the charge of [amount] for [specific line item] on shipment [tracking number]. Please confirm whether this amount is a CBP assessment, a tax, or a fee charged by [carrier or broker].

The attached order record shows [relevant fact]. Please provide the entry number, declared value, classification, country of origin, and a breakdown of all government and private charges. If the fee or entry information is incorrect, please correct the bill and refund the disputed amount to [payment method].

Please confirm receipt of this dispute and provide a written response.

Send it before the invoice's due date or stated dispute deadline. Carrier deadlines vary, so don't assume that a deadline published for one DHL or FedEx service applies to every shipment.

5. Contact the seller separately

The seller or marketplace is the right party to contact if it collected an import-fee deposit or promised that duties were included. Attach the checkout record, carrier invoice, and proof of payment.

Subject: Import charge inconsistent with order terms [order number]

The checkout record for this order states [quote the relevant wording]. I was later charged [amount] by [carrier] for [description]. Please explain whether this charge duplicates an amount collected at checkout and, if so, refund the duplicate or resolve it under the order terms.

Attached are the checkout record, carrier invoice, and proof of payment.

A seller may choose to reimburse you even when the customs assessment was correct. That would be a seller resolution, not a CBP refund.

Use a CBP protest only for a CBP decision

A formal protest addresses a customs decision on an entry, such as classification, valuation, rate, or amount. It isn't a general complaint about a carrier's brokerage fee, slow customer service, collection call, or unclear invoice.

Under 19 U.S.C. section 1514, certain CBP decisions generally become final unless challenged through the required process. 19 C.F.R. Part 174 provides a 180-day period for many decisions relating to entries made on or after December 18, 2004. The relevant date is connected to the CBP decision or liquidation, not simply the day the package arrived or the carrier sent its invoice.

CBP's protest guidance says protests and petitions are generally filed on CBP Form 19. It also says there is no statutory requirement to use that particular form in every case. Eligible trade users can file through the ACE Protest Module.

Before trying that route, confirm that:

1. You're the importer of record or otherwise eligible to challenge the entry.
2. The dispute concerns a CBP decision, not only a private carrier fee.
3. You have the entry number and the relevant decision or liquidation date.
4. You can state the precise correction and support it with records.
5. The applicable deadline has not passed.

If the carrier won't identify the importer of record or entry details, request them in writing immediately. A customs broker or qualified customs lawyer may be useful for a high-value or technically complex entry. This information isn't legal advice.

What the FedEx example does - and doesn't - show

A Wirecutter report described a consumer who bought a book from Italy and challenged a FedEx customs bill. The dispute was followed by another invoice and a collection notice. The report also discussed an additional charge connected with filing a claim.

That account doesn't establish that every FedEx charge is unlawful. It does illustrate the value of a written record. Put the dispute in writing, keep the original invoice and every follow-up message, and record dates, names, and case numbers. Ask what happens to the account while the dispute is under review. If collection contact arrives, treat it as a separate issue and respond rather than ignoring it.

Where customs disputes go wrong

Avoid these common approaches:

• Calling every carrier fee a "CBP charge."
• Asking CBP to refund a private brokerage or administration fee.
• Filing a protest without the entry number or liquidation date.
• Waiting for the carrier's investigation while a CBP protest deadline runs.
• Relying on a general marketplace policy instead of the terms shown on your actual order.
• Assuming a returned package automatically creates a duty refund.
• Treating claims about fixed refund percentages or guaranteed success as official policy.
• Sending the same vague complaint to several departments without naming the disputed line item.

Tariff programs and refund procedures can change. A news story or vendor blog about a possible tariff refund doesn't establish that your entry qualifies. Check current CBP instructions for the specific entry and tariff program before relying on it.

If the package was returned

Keep the return authorization, shipping receipt, tracking history, export record, and proof that the seller received the goods. Ask the seller, carrier, and broker who is responsible for each possible refund. Also ask whether the goods were formally re-exported or merely returned through a domestic warehouse.

A return can affect the customs analysis, but it doesn't automatically invalidate a carrier invoice. The money at issue might be the product price, a prepaid import amount, a customs correction, or a private carrier fee. Those are separate requests.

Duty drawback is a separate, specialized program generally associated with eligible goods that are exported or destroyed. Returning one online purchase isn't automatically a drawback claim.

Common questions

Should I contact CBP, DHL, or FedEx first?

Start with the party that issued the bill and request the entry records. Contact the seller as well if it collected import money or said charges were included. Use the CBP protest process only when the complaint concerns a CBP decision on an entry.

Can I dispute a customs fee after paying it?

You can still request a correction or refund, but the applicable deadlines and procedures vary. Payment doesn't show whether the charge was correct, and it doesn't replace a CBP protest deadline. Keep proof of payment and send the dispute promptly.

Does the 180-day CBP deadline start when the package is delivered?

Generally, no. The protest period is tied to the relevant CBP decision or liquidation rather than delivery. Ask for the liquidation date and check the current regulation before relying on the deadline.

What if the carrier says the fee is nonrefundable?

Ask the carrier to identify the exact fee, its contractual basis, and whether it is a government assessment or a private charge. A "nonrefundable" statement about a private service fee doesn't answer whether the amount was billed correctly. If the disagreement concerns the customs entry, consider the CBP process instead.

Scope of this guide

This guide covers goods entering the United States. The UK, European Union, Canada, Australia, and other customs systems use different forms, deadlines, taxes, and appeal routes. Don't apply the U.S. 180-day CBP rule to an overseas shipment.

With the invoice in front of you, mark every line as a government assessment, carrier fee, or seller charge. Then request the entry documents and itemized calculation before deciding whether the next message belongs with the carrier, seller, or CBP.