What is duty drawback? A 10-minute primer for importers and exporters.

Every year, American companies pay billions of dollars in import duties on goods that never end up being consumed in the United States. The goods get re-exported, destroyed, or built into something that's shipped overseas. Duty drawback is the program that gives that money back.

It is not a loophole, an aggressive tax position, or a gray area. It's a refund mechanism Congress wrote into law in 1789 and has maintained ever since, on the simple principle that goods which leave the country shouldn't carry a US import tax. The catch has never been the law — it's that claiming it requires matching years of import records against years of export records, line by line, under rules most companies have never had a reason to learn.

How drawback actually works

The mechanics are straightforward in principle. You import goods and pay duty. Later, those same goods — or commercially interchangeable substitutes, or finished products made from them — are exported or destroyed. At that point, US Customs and Border Protection (CBP) will refund 99% of the duties, taxes, and fees you originally paid.

The legal foundation is 19 USC § 1313, with the implementing regulations in 19 CFR Part 190. The 1% CBP keeps covers the cost of administering the program.

The five types of drawback

"Drawback" is really an umbrella over five distinct claim types. Most companies qualify for more than one, and the type determines the matching rules — and the size of the refund.

1. Unused merchandise — direct identification

You import something and later export the very same item, unused and in the same condition. The cleanest case, and the one with the highest confidence, because the import and the export are the identical good.

2. Unused merchandise — substitution

You import an item and export a commercially interchangeable one classified under the same 8-digit HTS subheading. Under TFTEA, the modern standard is that 8-digit match rather than the older "same kind and quality" test.

3. Manufacturing drawback

Imported inputs are consumed in producing a finished good that's then exported. This requires tracing a bill of materials — which imported components went into which exported product — and can be claimed by direct identification or substitution.

4. Rejected merchandise

Goods that didn't conform to specification, were defective, or were shipped without consent, and are then returned or destroyed. The duty paid on those goods comes back.

5. The duties that ride along

Beyond the base tariff, several other charges are recoverable on the same 99% factor — and they're the ones most often missed:

• Section 301 China duties — fully drawback-eligible across all five types.
• Section 232 steel & aluminum — eligible by direct identification only; substitution is not allowed.
• MPF, HMF, and IRT — the Merchandise Processing Fee, Harbor Maintenance Fee, and Internal Revenue Tax all come back on the 99% factor.

The five-year clock

Timing is the rule that quietly disqualifies the most refunds. Under 19 USC § 1313(r), you have five years from the date of import to the date you file the claim. Imports older than that window are simply gone — which is why triaging your oldest eligible lots first matters more than chasing the largest ones.

The program isn't hard to qualify for. It's hard to calculate. That's the gap software closes.

How to tell if you're owed

If your company both imports and exports — or imports, manufactures, and ships finished goods abroad — there's a real chance you're sitting on recoverable duty. The strongest signals: meaningful import duty paid in the last five years, regular exports or destructions, and product lines that move in both directions.

You don't need perfect records to find out. Import history (CBP 7501s, an ACE export, or a CSV) and export history (AES/EEI filings, commercial invoices, or a CSV) are enough to produce a defensible estimate — and the estimate should show you exactly which lines drove the number and which were excluded, and why.

This article is for general information and is not legal or tax advice. Drawback eligibility depends on your specific facts, and final refunds are determined by CBP at liquidation. Consult a licensed customs broker or attorney for your situation.