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Guides
Practical guides to recurring trade-compliance questions. Each guide is broker-grade, primary-source-cited, and walks through a real worked example with deep links into the Tandom calculator and AD/CVD catalog.
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Resource Center
Practical guides to recurring trade-compliance questions. Each guide is broker-grade, primary-source-cited, and walks through a real worked example with deep links into the Tandom calculator and AD/CVD catalog.
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. MFN, Section 232, Section 301, Section 122, AD/CVD, MPF, HMF, with a real worked example.
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How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. For brokers and compliance teams.
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What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
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What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
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Implementation playbook for showing landed cost (duty + fees) at checkout after the August 2025 de minimis suspension. Decision matrix by volume, runnable Tandom API code, postal vs courier math, and a contrarian callout for when you should NOT integrate.
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Honest provider comparison across Zonos, Shopify Markets DDP, Easyship, Passport, Avalara CrossBorder, and Tandom. Pricing, integration breadth, AD/CVD coverage, DDP guarantee fine print, and decision framework by use case.
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A practical workflow for checking antidumping and countervailing duty exposure on a US entry. Why HTS-only checks fail, how to read the scope text, manufacturer rates, scope rulings, with a real lookup against an active order.
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Decode case numbers like A-570-983 and C-489-830 to find country, petition type, and the Federal Register scope text fast. For brokers and importers.
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Scope text is authoritative. The HTS list is illustrative. A practical guide for brokers to read scope, find past rulings, and file under 19 CFR 351.225.
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Find the right manufacturer or exporter rate inside an AD/CVD order. Cash deposit cascade, separate rates, all-others, and PRC-wide rates for brokers.
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Wire the Tandom AD/CVD lookup into Claude as a Model Context Protocol tool. Real JSON-RPC traces, the tool list, and a worked example, in 2026.
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A working classification workflow: search by description, read the section and chapter notes, apply the GRIs, confirm the 10-digit suffix.
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How to classify composite goods and retail kits with the GRIs: relative specificity, essential character, sets put up for retail sale, GRI 5 cases.
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When to file an eRulings request, what to put in it, where it goes, and how the binding effect works. Written for brokers and compliance teams.
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Run thousands of product descriptions through HTS classification, score the confidence, and triage the borderline rows. For brokers and ecommerce ops.
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Build a second-pass HTS classification audit on a year of broker entries using Tandom's classifier API. Workflow, code, and the obligation behind it.
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Why raw LLM prompts fabricate stat suffixes, why MCP-augmented prompts do not, and the prompt template a broker can hand to Claude or ChatGPT today.
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Nine operational steps from catalog audit to customer comms. Broker selection, ACE setup, entry-type decision, recordkeeping, and a worked transition timeline for a 80,000-order/month apparel brand.
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How postal and courier shipments are duty-handled differently into the US. The Feb 28, 2026 ad valorem cutover, per-package math on a $30 phone case, and AOV-band decision framework.
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How to subscribe to CBP Cargo Systems Messaging Service (CSMS) and triage the messages that change broker filing behavior, without losing the ones that matter.
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Set up real-time alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance.
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Turn a PDF commercial invoice into ACE-ready entry data: which fields to extract, how to chain extraction into HTS classification and duty calculation.
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Step-by-step CAPE Declaration filing for IEEPA refunds: who can file, eligible entries, the 9,999-entry CSV, ACE setup, and the 60 to 90 day refund window.
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What changed for low-value DTC and ecommerce shipments after Section 321 de minimis was suspended in 2025. Filing, fees, and duty math through 2027.
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A practical guide to qualifying a product for USMCA preferential tariff treatment. Rules of origin, the 9 certification data elements, and a worked example.
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Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
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