What does the CAPE rejection 'unable to calculate duty' mean?
Quick answer
'Unable to calculate duty' is among the most common CAPE rejection codes. It means CBP's systems could not compute the refund for that entry from its own records — typically because of complex duty structures, a pending Post-Summary Correction, or data that does not match CBP's records. It is usually correctable: fix the underlying issue and refile.
Detailed Answer
When CBP validates a CAPE declaration, it recalculates the IEEPA refund for each entry from its own records. If the system cannot complete that calculation, the entry is rejected with an "unable to calculate duty" code — one of the most common rejection reasons since CAPE launched.
What causes it:
- Complex duty structures. Entries mixing ad valorem and specific-rate components, multiple Chapter 99 overlays, or unusual rate combinations can defeat the automated calculation.
- Pending Post-Summary Corrections. If a PSC is still processing, the entry's duty basis is in flux and CBP cannot compute a differential. The entry should be held and refiled after the PSC finalizes.
- Reconciliation flags (pre-Phase 2). Before June 29, 2026, reconciliation-flagged entries had unsettled duty amounts; these are now declarable through CAPE Phase 2.
- Data mismatches. Entry numbers corrupted by spreadsheet handling (stripped leading zeros, scientific notation), transposed digits, or stale ES-003 data that no longer matches CBP's records.
- Warehouse entry types. Since July 7, 2026 (CSMS #69127837), warehouse entries (types 21/22) are rejected outright — the refund must be claimed on the withdrawal entries (types 31/32/34/38) instead. See are warehouse entries CAPE-eligible.
Is it fatal? Usually not. Unlike a drawback conflict (a permanent disqualification), "unable to calculate duty" generally means the entry needs correction, supplemental documentation from your broker, or better timing — then a refile.
How clean preparation avoids it. Tariffi's pre-filing audit works directly from parsed ES-003 data (no intermediate spreadsheets), flags PSC-incomplete and reconciliation-flagged entries before filing, checks entry-type eligibility, and validates entry-number formatting against CBP's specification. Entries likely to draw this rejection are held out of the declaration and tracked for refiling once the blocker clears — protecting your overall pass rate and your broker's filing quality.
Related Questions
What happens if CBP denies my claim?
If CBP denies any entry in your CAPE declaration, you owe nothing on the denied portion. Your broker partner (Filer of Record) responds to any CBP Form 28 or Form 29 within the scope of the LPOA at no additional charge. For entries worth contesting, the broker may file a further protest or recommend CIT action.
Are warehouse entries (types 21/22) eligible for CAPE refunds?
No — effective July 7, 2026 (CSMS #69127837), CBP rejects warehouse entry types 21 and 22 from CAPE with an 'ENTRY TYPE NOT ALLOWED' error. The IEEPA duty is still refundable, but the declaration must cite the withdrawal entries (types 31, 32, 34, or 38), where the duty was actually assessed and paid.
What are CAPE Phase 2 reconciliation entries?
CAPE Phase 2, live since June 29, 2026 (CSMS #68340863), covers entries flagged for reconciliation: consumption entries (types 01, 02, and 06) that carry a reconciliation flag but have no filed Type 09 reconciliation entry. CBP estimates roughly 2.8 million such entries, representing about $28.7 billion in IEEPA duties, are now declarable through CAPE.
What are CBP Form 28 and Form 29?
Form 28 (Request for Information) is CBP asking for additional documentation to evaluate your entry. Form 29 (Notice of Action) is CBP notifying you of a proposed change to your entry, including a potential denial. Your broker partner (Filer of Record) responds to both within the LPOA scope at no additional charge through Tariffi's engagement.
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