A euro denominated CBAM liability calculator for GCC aluminium and steel exporters. Computes the free allocation deduction per CN code, compares actual against default values, and projects 2026 to 2034 net cost across three EUA scenarios.
Enter shipment details to compute the certificate liability for the chosen reference year. Defaults preload Q1 2026 numbers (CBAM factor 2.5 percent, EUA reference price EUR 75.36).
Same shipment, projected forward through the CBAM phase in. Three EUA scenarios: low (EUR 60), mid (Q1 2026 published EUR 75.36 held flat), high (EUR 120). Numbers track the linked calculator above.
| Year | Factor | Excess (tCO2) | EUR @ 60 | EUR @ 75.36 | EUR @ 120 |
|---|
Excess and factor are constant across scenarios. EUA price drives the column spread.
Embedded emissions. Tonnage × verified specific emissions per tonne (tCO2). The verifier signed actual.
Free allocation deduction. Tonnage × CBAM benchmark per tonne for that CN code. The benchmark is the EU ETS free allocation reference for the production route, set by Commission Implementing Regulation 2021/447 and successors. The Commission may revise benchmarks until 1 January 2027.
Excess. Embedded minus deduction, floored at zero. Verified emissions below the benchmark produce zero liability.
Liability. Excess × CBAM factor for the year × EUA reference price in euros. The CBAM factor steps from 2.5 percent in 2026 to 100 percent in 2034 per Article 31 of Regulation 2023/956.
Default values. Where no verifier signed actual exists, importers must use Commission published default values, which include a surcharge over the regional industry average. Default values can sometimes produce a lower liability than actuals — that is the result the workbench flags as counterintuitive.
Benchmark and default value tables ship with this build. They are versioned and dated. Whenever the Commission publishes a revision, the next build redates the table and emits a customer diff note. Operator must read every implementing act within 48 hours of publication.
Aluminium primary (CN 7601). Benchmark 1.514 tCO2 per t. Source: EU ETS phase 4 free allocation, Commission Implementing Regulation 2021/447 Annex I row "Primary aluminium". Default value 8.20 tCO2 per t. Source: CBAM Implementing Regulation default values registry, regional industry average plus surcharge.
Aluminium semi finished (CN 7604, 7606, 7608, 7610). Benchmark same upstream value plus processing emissions of around 0.04 tCO2 per t. Default value 8.50 tCO2 per t.
Crude steel BF BOF (CN 7206, 7207). Benchmark 1.328 tCO2 per t. Source: EU ETS phase 4 hot metal benchmark.
Hot rolled steel flat (CN 7208, 7213). Benchmark 1.231 tCO2 per t. Default value 2.05 tCO2 per t.
Long products and tubes (CN 7301 through 7306). Benchmark inherits upstream plus processing.
Verified installation emissions used as defaults: EMSTEEL DRI EAF route, 0.67 tCO2 per t, public CBAM disclosure cited in CBAM Verified Emissions Data Layer dossier 2026-05-07. EGA primary aluminium, direct emissions estimate 6.20 tCO2 per t, public sustainability disclosure 2024 (Scope 1 only). Ma'aden Aluminium primary, 8.40 tCO2 per t, public estimate.
USD 12k per year for a single entity seat. USD 36k for a multi entity tier covering up to 15 CN codes across a holdco footprint. USD 90k enterprise with API access, quarterly benchmark refresh service, and verifier ready dossier export. Pilot pricing locks for the contract term — Commission revisions through 2027 do not trigger a price increase.
Buyer is the producer side compliance lead or the importer side authorised CBAM declarant. Path to invoice goes through assel@nomoi.ai. No procurement portals, no RFP responses in v1 — direct seat purchase only.
The leaked December 2025 implementing annex on free allocation adjustment showed that providing actual emissions data could in some cases produce a higher CBAM liability than default values. That counterintuitive result is the wedge. Every named GCC producer is recalculating its 2026 invoice template right now. None of the EU horizontal CBAM platforms (CarbonChain, Sphera, IntegrityNext, Coolset, Carbmee, Persefoni, Sweep) is built around the free allocation deduction as the primary product surface.
Workbench scope is narrow on purpose. One calculation, surfaced cleanly, audit ready, GCC named installations preloaded. Whoever maintains the cleanest benchmark version history per CN code as the Commission revises through 2027 becomes the audit reference.