The short answer
Estimate drawback cash by taking up to 99% of the eligible duties, taxes, and fees on import lines you can match to exports or destructions within five years of import. Strip out ineligible duties (for example AD/CVD, and many Section 232 lines), apply the lesser-of rule on substitution claims, and remember that matching method changes the total. For forward-looking duty cost before you import, use the free tariff calculator; for historical recovery, run the ACE import and export compare described below.
Key takeaways
- Refundable amount is generally up to 99% of eligible duties, taxes, and fees on matched lines.
- Substitution claims are capped by the lesser-of rule; direct identification is not.
- Matching method (FIFO vs optimized) changes the cash total from the same data.
- Accelerated payment can put the estimate in the bank in about three weeks once approved and bonded.
CFO cash estimate, step by step
1.Pull five years of duty-paid import lines
From ACE report ES-003 (or your broker's entry extract), total the duties, taxes, and fees by HTS line. Keep entry number, line, 10-digit HTS, quantity, and entered value. This is the gross duty pool before eligibility cuts. See finding unclaimed drawback.
2.Pull matching export or destruction evidence
From AES reports and commercial documents, list export quantities by product or HTS. For manufacturing, use bills of materials to convert finished-goods exports into consumed import quantities. Only shipments inside five years of the related import count.
3.Match lines and choose the claim path
Pair imports to exports by direct identification (same goods or traced materials) or by substitution at the 8-digit HTS level. How that pairing works is explained in how drawback matches imports to exports. Remove lines already used on another claim (ACE ES-609 / ES-610).
4.Cut ineligible duties, then apply 99% and lesser-of
Exclude antidumping and countervailing duties (never drawback eligible) and check Section 232 eligibility by proclamation. Section 301 duties are generally eligible. On what remains, take up to 99%. For substitution, cap each pairing at 99% of the lesser of the import duty or the duty that would apply to the substituted goods. Details: AD/CVD and Section 232 and Section 301 drawback.
5.Separate timing: accelerated payment vs liquidation
The estimate above is claim value, not cash timing. With accelerated payment and a sufficient bond, CBP usually pays within about three weeks of acceptance in ACE. Without it, payment waits for liquidation, often one to three years. See how long drawback takes.
6.Sanity-check forward duty cost with the tariff calculator
For new buys, model Section 301 and Section 232 exposure on the free tariff calculator before entry. That is landed-cost planning, not a drawback claim, but it tells the CFO which future duty dollars are worth putting on a drawback-eligible export path.
How do I calculate how much duty drawback I can recover?
Start from matched, eligible import lines. The statutory recovery is generally up to 99% of the eligible duties, taxes, and fees. Substitution claims are further limited by the lesser-of rule (19 U.S.C. 1313(l)(2)). Ineligible amounts (AD/CVD always; many Section 232 duties by proclamation) never enter the numerator. Two companies with identical shipments can still report different refunds if one uses FIFO matching and the other optimizes pairings; see drawback matching.
How should a CFO estimate drawback cash for the forecast?
Use three buckets:
- Historical recoverable (already imported and exported or destroyed inside five years): run the ACE match and apply 99% / lesser-of as above.
- Pipeline (imported, not yet exported): apply expected export yield and the same caps.
- Timing: put accelerated-payment claims in a near-term cash line (weeks after filing once privileges and bond are in place); put unaccelerated claims in a multi-year receivable.
Do not book the full gross duty pool. Net of ineligible duties, already-claimed lines, lesser-of haircuts, and matching quality is what belongs in the forecast.
What can throw the estimate off?
- Treating AD/CVD or barred Section 232 duties as recoverable.
- Ignoring the lesser-of cap on substitution.
- Using AES data alone without commercial export proof.
- Double-counting lines already on another claim.
- Canada or Mexico exports that face USMCA lesser-of limits on many claim types; see drawback on exports to Canada or Mexico.
- Assuming FIFO recovery equals optimized recovery.
Where does Stable Software fit?
DrawbackAI by Stable Software matches imports to exports and assembles claims for customs brokers to file under their own filer code. Flat software license. No contingency, no percentage of the refund. For pre-import duty math, use the tariff calculator. See DrawbackAI.
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Frequently asked questions
How do I calculate how much duty drawback I can recover?
Match eligible import lines to exports or destructions within five years of import, exclude ineligible duties, then take up to 99% of what remains. Substitution claims are capped by the lesser-of rule, and matching method changes the total.
How do I estimate drawback cash for my CFO?
Build a historical recoverable figure from the ACE five-year match, a pipeline figure for duty-paid inventory still to export, and a timing split between accelerated payment (about three weeks once approved) and liquidation (often one to three years). Net out ineligible duties and lesser-of haircuts before you put a number in the forecast.
Is duty drawback always 99% of duties paid?
Up to 99% of eligible duties, taxes, and fees on matched lines. Substitution claims can recover less under the lesser-of rule, and some duties are not drawback eligible at all.
Can the free tariff calculator estimate my drawback refund?
It estimates duty cost on a prospective import, including common trade-remedy scenarios. Use it for forward landed-cost planning. Historical drawback recovery still needs the ACE import and export match described in this guide.