Every importer eventually feels it…
That sinking feeling you get when you look at a duty bill and something doesn’t seem right. Maybe the tariff rate is too high. Maybe the classification is wrong. Maybe your goods were evaluated under a rule of origin that shouldn’t apply.
And here’s the thing — most importers just pay it and move on.
That’s a big problem. Incorrect duties are silently cutting into your profit margins, and many merchants don’t know they can challenge them.
Below is how to spot bad duty assessments and what to do about them.
Quick Look At What’s Coming Up:
- Why Wrongly Assessed Duties Are Killing Margins
- Common Reasons CBP Gets Duty Assessments Wrong
- How The Refund Process Actually Works
- Practical Steps To Protect Profit Margins
Why Wrongly Assessed Duties Are Killing Margins
Import duties hit the bottom line harder than most other costs.
Why? Because they don’t just add an item to a spreadsheet — they alter the economics of importing an item. One mistake on one shipment can silently cost you thousands.
A difference between 5% and 25% duty on a $200,000 furniture shipment means a $40,000 difference to the bottom line. No one is talking about nickels and dimes when it comes to pricing, competitiveness and your ability to profitably market and sell to your customers. That’s not an innocent mistake. That’s a margin killer.
But wait… it gets worse. According to industry studies two out of five tariff codes are typically incorrect. Which means that some portion of importers are overpaying every month and don’t even know it. That’s why importer refund rights exist – to fix this. And importers who file a smart CBP protest for tariff refunds can get money they never owed.
The catch?
You only have a limited window. Miss it, and that money is gone forever.
Common Reasons CBP Gets Duty Assessments Wrong
Tax determinations fail for many reasons. The majority are not done in bad faith — they are simply human error hardcoded into the system.
Here are the big ones:
- HTS misclassification — An incorrect Harmonized Tariff Schedule code is applied to your product, classifying it into a higher duty rate category.
- Entering the wrong country of origin — Your merchandise is classified as originating from a country that has a higher tariff rate when in fact it is eligible to enter under a free trade agreement.
- Errors in valuation — The customs value is overstated due to improper adjustment of freight, insurance or similar values.
- Tariffs inapplicable to imports — Products subject to special tariffs (Section 232, IEEPA, etc.) are assessed tariffs on goods outside of the scope.
Why does this matter so much?
Customs duties are computed automatically from the information entered at the time of entry. If anything in that information is incorrect — however slightly — the duties will be too. Once entered and paid, they belong “to you” until challenged.
That poses a huge challenge for importers that do not have a dedicated trade compliance team. Most small and mid-sized companies don’t.
How The Refund Process Actually Works
The refund process isn’t complicated, but the timing is everything.
When merchandise is imported, CBP will eventually “liquidate” the entry — this is when the duties become final. After they do, a clock starts ticking.
Here’s the timeline:
- Liquidation typically happens around 314 days after the entry date
- Importers have 180 days from liquidation to file a protest
- Miss the 180-day window, and your protest rights disappear
Filing a protest is the official method to dispute the assessment. Protests are filed electronically using ACE. There is no government filing fee and the protest suspends the finality of the entry while CBP adjudicates the merits of the protest.
Pretty straightforward, right?
The recent IEEPA-related tariffs drove this home more than ever before. Earlier this year, the Supreme Court deemed certain tariffs unauthorized. CBP opened up a portal for refunds – and within days the agency had over 75,000 refund requests from American businesses. Businesses suddenly discovering they’ve been overpaying? Lots of imports.
But here’s what most importers miss…
Protesting isn’t just for cases where the law is invalidated. It is the normal mechanism for contesting ANY incorrect duty…classification, valuation errors, improper applied tariff.
If you’ve paid duties that don’t seem right, the protest is your tool.
Practical Steps To Protect Profit Margins
OK now on to the good stuff. Here are the steps all importers should be doing to protect margins.
Don’t skip these. They’re simple — but most businesses don’t do them.
Audit Your Entries Regularly
Most duty errors are sitting in plain sight. They just need someone to look.
Retrieve your entry summaries (CBP Form 7501) and audit them line by line. Verify HTS classification. Verify country of origin. Verify customs value. Verify whether special tariffs were applied (and should have been applied).
A quarterly audit can catch errors before the window closes.
Watch The Liquidation Dates
This is the one most importers get wrong.
The 180-day clock doesn’t start ticking upon entry. It starts at liquidation. Liquidation dates are printed on each entry’s CBP Form 7501.
Create a system for tracking them. Once an entry liquidates you have a date. Act like it.
File Protests Early — Don’t Wait
Some importers wait until they’re “sure” before filing. That’s risky.
Issuing a protest protects your rights. You can rescind your protest if the problem goes away, but you cannot issue a protest after the deadline has passed. Filing one costs you nothing. Missing the deadline could cost you everything.
When in doubt, file.
Get Help When The Stakes Are High
Some duty disputes are simple. Others are not.
If your dollar amounts are large — or the legal issues are complex — involve a customs attorney. The administrative game can become complicated quickly, especially if CBP starts to challenge you. A knowledgeable attorney can also help identify refunds that were not previously known.
The gap between who you think files refunds versus who actually files is enormous. Less than 8% of all importers accounted for over 72% of all IEEPA duties paid and received an average refund of over $4.5 million. Larger importers have trade compliance departments. Smaller importers miss opportunities just because they are unaware.
Don’t be one of them.
Final Thoughts
Misclassified import duties are one of the largest stealth drains on your supply chain. They slowly erode your profit margin year after year without many companies realizing.
But here’s the reality…
Importer refund rights are there for a reason. Protest allows every company – large or small – a genuine opportunity to recoup funds that were never owed. Remember:
- Audit your entries for HTS, origin, and valuation errors
- Track liquidation dates and the 180-day protest window
- File protests early to preserve refund rights
- Get expert help when the dollars are significant
Margin protection is not avoiding taxes. Margin protection ensures you only pay taxes you owe.