Customs overcharges are frustrating. They're also often fixable. If U.S. Customs and Border Protection used the wrong value, classification, or country of origin, you can file a protest and ask for a refund. Turns out, a letter alone doesn't start a formal CBP protest. The protest goes through the ACE Portal, generally on CBP Form 19. The sample below gives you language you can attach or copy into the protest narrative.

The rules here cover U.S. imports. UK and EU readers will find their official refund routes near the end. Australia, Canada, and New Zealand do not follow the same deadlines, so a copied U.S. protest letter can send you to the wrong office.

What CBP can correct, and what it cannot

CBP decides duty, taxes, valuation, classification, and origin. You can protest those decisions. Brokerage fees are a different fight. If a courier charged a clearance fee, that is a private contract issue. Start with the broker's itemized invoice.

A seller's note saying "gift" does not control the case. Neither does a low value on a shipping label. CBP looks at the entry paperwork, the transaction, and the law. Your job is to show where the entry got it wrong.

Is a protest worth filing?

Use this table to spot the issue before you write.

If the numbers match and the code fits, a protest probably won't help. If one line is clearly wrong, you have something to work with.

The U.S. protest path, step by step

1. Find your entry summary and liquidation date. CBP Form 7501 is the key document. Your broker can send it if you don't have it.
2. Compare the declared value, assessed value, HS code, duty rate, and total paid.
3. Gather evidence that ties each claim to a document. Invoices beat screenshots. Payment receipts beat estimates.
4. Write your protest narrative. The sample letter below works as a cover letter or as the text you enter in ACE.
5. File through ACE. If you don't have a protest filer account, ask your customs broker or an authorized agent to file for you. CBP's protest page explains the ACE process.
6. Track the protest and keep copies of everything you submitted.

The deadline is strict. Under 19 CFR Part 174, a protest for an entry made on or after December 18, 2004 must be filed within 180 days of the decision. That usually means 180 days from liquidation. Miss it and the formal protest route is gone.

Sample letter to dispute customs fees with CBP

[Your full name]
[Your street address]
[City, State, ZIP]
[Email] | [Phone]
[Date]

U.S. Customs and Border Protection
Port Director, [Port name]
[Port address]

Re: Protest and refund request - Entry No. [entry number], Tracking/AWB [number], Liquidation date [date]

Dear Port Director,

I am filing a protest under 19 U.S.C. 1514 and 19 CFR Part 174. I disagree with the duties, taxes, and fees assessed on my entry. The entry was liquidated on [date]. The assessment is wrong because [overvaluation / misclassification / origin / other reason].

Entry facts:
Importer: [your name or company]
Goods: [description]
Declared value: [amount]
CBP-assessed value: [amount]
HS code used by CBP: [code]
Correct HS code, if different: [code]
Duty paid: [amount]
Refund requested: [amount]

Why the assessment is wrong:
[One or two sentences. Example: The commercial invoice and payment receipt show the goods sold for $X. CBP assessed them at $Y. That difference produced an overcharge of $Z.]

Documents attached: commercial invoice; payment receipt; entry summary; bill of lading or tracking; product photos or listing; written classification explanation, if any.

Please correct the entry and refund [amount] plus any applicable interest. Send all correspondence to [email or address].

Sincerely,
[Your name]
[Signature]

Don't send this to a general CBP inbox and assume it's filed. Use ACE or your broker. CBP says protests and petitions are generally filed on CBP Form 19, though the agency notes there's no statutory requirement to use that exact form. The ACE filing is what creates the formal protest record.

Evidence that actually helps

Thing is, a protest is only as strong as the paper behind it. The best file connects one number to one document. If you say the value was $120, show the invoice and the payment receipt. If you say the HS code is wrong, explain why the product fits the other code. Photos help. Prior CBP rulings help more. If a broker prepared the entry, ask for the full entry packet. You paid for that work. That packet usually has the 7501, the invoice, and the classification notes in one place, even if it arrives as a messy PDF with names you don't recognize. Keep originals. Send copies, not the only version of your invoice.

Mistakes that sink a claim

Missing the 180-day window is the biggest one. An angry email with no entry number is next. That email might feel good. It does not move a protest. Don't dispute a private brokerage fee through CBP if the fee came from your contract with the broker. Don't rely on a seller's website screenshot when you have a real invoice. And don't file the same protest in two places; it just slows the review.

Check who is the importer of record, too. If you bought from an overseas store and the seller acted as importer, you may need the seller's help or written authorization. If you are the importer of record, you can file or authorize a broker.

If you're in the UK or EU

To be honest, the U.S. template won't map cleanly onto other systems. In the UK, overpaid import duty and VAT are usually reclaimed from HMRC with form C285. For goods delivered by Parcelforce or Royal Mail, use form BOR286. HMRC says it aims to decide straightforward C285 claims within 30 days. Northern Ireland uses the Union Customs Code route. The official guidance is HMRC's repayment page.

In the EU, repayment and remission are handled under the Union Customs Code, but the practical filing route runs through the national customs authority. Deadlines and forms vary by country. Start with the authority that collected the duty. The European Commission's overview is Customs debt: remission and repayment.

If you're in Australia, Canada, or New Zealand, go straight to your border agency's refund or appeal page. The deadlines differ, and copying a U.S. protest letter will likely send you down the wrong path.

FAQ

Can I just email CBP a letter?
You can send correspondence, but a formal protest normally goes through ACE, generally on CBP Form 19. Use the letter as your narrative and attach evidence.

What's the deadline for a CBP protest?
For entries made on or after December 18, 2004, the regulation sets a 180-day window. Check your liquidation date and file well before the deadline.

Can I dispute brokerage fees with CBP?
Usually no. CBP handles customs decisions. Brokerage fees are a private billing issue. Ask the broker for an itemized invoice and dispute it under your contract.

What if CBP denies the protest?
Read the denial notice. It should explain the next step. For a significant refund, you may want a customs attorney or trade consultant.

Find your CBP Form 7501 first. If the assessed value or HS code doesn't match your paperwork, start the protest narrative today and calendar the 180-day deadline.