The commodity tax layer that should have existed before your broker started lying to you.
GabelleStack is a multi-jurisdiction excise, duty, and tariff-rate quota calculation engine built for bulk traders who deal in politically sensitive commodities — carbon, palm oil, sugar, plastics, and everything else regulators have decided to tax inconsistently across borders. It ingests shipment data, resolves the applicable rate stack across every relevant jurisdiction in real time, and returns a unified, auditable figure before your goods clear customs. The Excel files can retire.
- Full rate-lookup API covering EU CBAM, palm oil import levies, sugar TRQs, UK plastics tax, and cross-border excise regimes updated on a rolling basis
- Resolves across 47 distinct commodity tax schemas without a single hardcoded rate in the hot path
- Native integration with CN8/HS code hierarchies for automatic commodity classification and regime matching
- Audit trail baked into every calculation — not bolted on afterward. Every figure is reproducible, timestamped, and explainable to a customs authority
- TRQ headroom tracking with configurable alerting thresholds when quota consumption approaches trigger levels
Descartes CustomsInfo, Bloomberg Terminal API, TARIC Online, TradingEconomics, NeuroSync Trade, Customs4Trade, Salesforce Revenue Cloud, VaultBase Compliance, TradeWindow, CHIEF/CDS gateway, Flexport API, DutyCalc Pro
GabelleStack is a microservices-based calculation engine with each jurisdiction's rate logic isolated into its own versioned service, so a change to the EU CBAM methodology doesn't ripple into the sugar TRQ resolver at 2am. Rate data is persisted in MongoDB, which handles the document-oriented structure of overlapping tariff schedules better than anything relational I tried. The hot calculation path runs entirely in-memory with Redis as the long-term rate cache, keeping p99 lookup latency under 40ms even on complex multi-regime shipments. The API layer is stateless, containerized, and ships with a full OpenAPI spec.
🟢 Production. Actively maintained.
Proprietary. All rights reserved.