Duty Drawback Substitution and Unused Merchandise: 99 Percent Refund

Duty drawback is the most underutilized cash-recovery program in US trade. Importers pay roughly 80 billion USD in duties and fees per year. Drawback recoveries hover around 2 billion USD. The gap is somewhere between 10 to 50 billion USD per year of recoverable cash sitting on the table because importers either do not know the program exists or assume the documentation burden exceeds the benefit.

This guide covers the substitution and unused merchandise flavors of drawback (the two most useful for mid-market importers), the eligibility rules, the documentation, and the worked refund math.

What drawback does

19 USC 1313 allows a refund of 99 percent of duties, fees, and taxes paid on imported merchandise when that merchandise (or a same-kind-and-quality substitute) is later exported or destroyed. The 99 percent rule (not 100) is the historic statutory carve-out covering CBP administrative costs.

Refund-eligible duty layers as of mid-2026:

• MFN duty
• Section 301 (List 1, 2, 3, 4A)
• Section 232 (steel, aluminum, derivative)
• Section 122 (post-February 2026 reciprocal)
• MPF
• HMF
• Some additional duties under specific proclamations

Refund-NOT-eligible:

• ADCVD (the 2015 TFTEA modernization specifically excluded ADCVD from drawback)
• Some narrow product-specific carve-outs

Substitution drawback (19 USC 1313(j)(2))

The most flexible form. Allows drawback on goods of the same 8-digit HTS classification as the originally imported merchandise, even if the actual exported goods are not the originally imported units.

Practical use case: a US apparel importer brings in 100,000 cotton T-shirts from Bangladesh under HTS 6109.10.0010. The importer sells 80,000 domestically and exports 20,000 to a Mexican customer. The 20,000 exported can be substitute drawback against the original 100,000 imported, claiming refund of 99 percent of the per-unit duties paid on 20,000 shirts.

The substitute does not need to be the literal Bangladesh-imported shirts. They can be US-domestically-sourced shirts of the same HTS line. The substitution mechanism captures the duty refund even when domestic inventory is the actual exported unit.

Unused merchandise drawback (19 USC 1313(j)(1))

Drawback on imported merchandise that was not used domestically and is re-exported (or destroyed) in the same condition as imported.

Practical use cases:

• Importer brings in 1000 units of HTS 8517.62 smartphones for a US distributor. The distributor cancels half the order. The remaining 500 are re-exported to a Mexican distributor.
• An industrial supplier imports 10,000 USD of components, discovers a specification mismatch, and re-exports to a Canadian customer who can use the components.

The "unused" requirement means the merchandise has not been altered, assembled, or substantively changed since import. Minor handling (warehouse picking, labeling for transport) is permitted.

Worked example: substitution drawback on Chinese consumer electronics

A US distributor imports 1 million USD of HTS 8517.62 smart-home devices from China per year. Duties paid:

• Section 301 List 4A 7.5 percent = 75,000 USD
• Section 122 (10 percent) = 150,000 USD
• MPF capped at 614.35 per entry = 7,372 USD (assume 12 entries)
• Total annual duty = 232,372 USD

The distributor sells 75 percent domestically and exports 25 percent to Canadian customers. Annual export volume of the same HTS line: 250,000 USD worth.

Substitution drawback claim:

Annual refund: 57,512 USD. After CBP administrative fees and the cost of compliance support (typically 10 to 15 percent of refund for a service provider), net to the distributor approximately 46,000 to 51,000 USD.

Worked example: unused merchandise drawback on cancelled order

An industrial buyer imports 500 units of an HTS 8504.40 inverter component for a customer project. Component value 800 USD each. Total invoice 400,000 USD.

Duties paid (Chinese origin):

• MFN 0 percent = 0
• Section 301 List 1 25 percent = 100,000
• Section 122 (10 percent) = 60,000
• MPF capped = 614.35
• Total = 160,614 USD

The customer cancels mid-project. The importer re-exports 350 units (280,000 USD value) to a European customer at a small markup.

Unused merchandise drawback claim:

Refund: 111,305 USD. On a 400,000 USD inventory that got reshuffled, the drawback recovery is most of the original duty paid.

Documentation required

For each drawback claim:

1. Import documentation: entry summary CBP 7501 for the original import showing the duty paid by line.
2. Export documentation: bill of lading and commercial invoice showing the export of the substitute (substitution) or original (unused) merchandise.
3. Inventory records: tracking from import to export showing the quantity and HTS line moved through inventory.
4. Manufacturer specifications (for substitution): documentation that the exported substitute is of the same HTS line as the originally imported merchandise.
5. Drawback claim form CBP 7553: filed in ACE drawback module.

The claim must be filed within 5 years of the original import date. The export must occur within 5 years of import. The claim itself must be filed within 1 year of the export.

The TFTEA modernization

The 2015 Trade Facilitation and Trade Enforcement Act (TFTEA) modernized drawback substantially:

• Simplified substitution rules (broader than the pre-2018 "commercial interchangeability" test).
• Combined refund of all eligible duties under a single claim (no separate per-duty filings).
• Online filing in ACE replacing paper.
• Faster CBP processing (most claims processed in 90 to 180 days after filing).

The pre-2018 drawback program had a 1 to 2 year processing cycle. Post-TFTEA the system is faster but the volume of claims has not caught up with the eligible refund pool.

When drawback is NOT economic

The administrative cost of drawback is 10 to 20 percent of the refund value for outsourced service providers. In-house capability has a setup cost of 50,000 to 200,000 USD for software, training, and initial documentation rebuild.

Rough threshold: if your annual recoverable duty is under 50,000 USD, the cost of compliance approaches the recovery. Above 200,000 USD per year, drawback is unambiguously economic. The 50,000 to 200,000 USD band is a judgment call.

Run your drawback analysis now

The LandedFees calculator can estimate your annual recoverable duty from your import volume and HTS lines. Plug in your import inventory turn and re-export percentage and the engine returns the indicative annual drawback refund.

Estimate drawback refund

Section 122 status as of June 20 2026

The May 7 2026 Court of International Trade ruling in Oregon v. United States (consolidated with Burlap and Barrel v. United States) struck down the Section 122 proclamation. The Federal Circuit issued an administrative stay on May 12 2026, so CBP is still collecting the duty pending appeal. Importers paying now should preserve protest rights and refund claims in case the government loses on the merits. The underlying Section 122 authority sunsets July 24 2026 under the statutory 150-day ceiling, regardless of the appeal outcome, unless Congress extends or a fresh proclamation restarts the clock.

Citations

• 19 USC 1313 (drawback authority): https://www.law.cornell.edu/uscode/text/19/1313
• 19 CFR Part 190 (modernized drawback regulations): https://www.ecfr.gov/current/title-19/chapter-I/part-190
• CBP TFTEA drawback guidance: https://www.cbp.gov/trade/programs-administration/entry-summary/tftea-drawback
• ACE drawback module user guide: CBP
• CSMS guidance on Section 301 / 232 / 122 drawback eligibility: CBP CSMS portal