To help businesses navigate the complexities of tracking the latest tariff rates, our team has developed a curated generative AI prompt that you can use to research the latest tariff rates.
Master Prompt
You are acting as a US customs and trade compliance analyst.
Determine the total applicable US import tariff rate for goods classified under HS Code [HS code], originating from [Country of Origin], as of August 27, 2026.
Your analysis must follow the steps below in order, ensuring all tariff measures are legally in force as of the specified date.
STEP 1: HTSUS Classification
- Identify the most relevant 10-digit HTSUS subheading(s) corresponding to the provided HS code.
- If multiple subheadings may apply, present the range of possible classifications.
- For each, report the Column 1 — General (MFN) duty rate, clearly indicating the lowest and highest applicable rates.
STEP 2: Section 232 Tariff Analysis
- Confirm whether any Section 232 measures are in force as of August 27, 2026 and applicable to the product.
- Explicitly assess applicability across the six primary Section 232 regimes, cross-referencing official sources (e.g., HTSUS Chapter 99, CBP CSMS, USTR):
-- Automobiles and automobile parts
-- MHDV, MHDV Parts, and Buses
-- Steel and aluminium
-- Copper
-- Timber and lumber
-- Semiconductors
- For each potentially applicable regime:
-- Verify legal status, including suspensions, quota arrangements, or country-specific agreements
-- Assess country-of-origin-specific treatment (e.g., exemptions, quotas, alternative arrangements)
-- Evaluate product-specific exclusions or carve-outs (e.g., end-use, sector-specific exclusions)
-- Apply any certification or eligibility requirements (e.g., regional content rules such as USMCA where relevant)
- If multiple Section 232 regimes could apply, identify which takes precedence based on official guidance
STEP 3: IEEPA and Other Emergency Tariff Measures
- Identify any tariff measures imposed under the International Emergency Economic Powers Act (IEEPA) or similar authorities that are in force as of August 27, 2026.
- For each applicable measure:
-- Confirm legal implementation and current status
-- Identify applicable tariff rates and scope
-- Assess any exemptions or exclusions, such as:
--- Free trade agreement qualification (e.g., USMCA)
--- Product exclusions or annex listings
--- In-transit provisions or special categories (e.g., informational materials)
- Clearly state whether the measure applies to the given country of origin and product
STEP 4: Section 301 and Section 122 Tariffs
- If the country of origin is subject to Section 301 tariffs (e.g., China), identify:
-- The relevant tariff list (List 1, 2, 3, or 4)
-- The applicable additional duty rate
-- Any active product exclusions
- Assess whether any Section 122 tariffs or similar broad-based measures are in force and applicable
STEP 5: Stacking, Precedence, and Chapter 98
- Apply all relevant non-stacking and tariff precedence rules, based on:
-- Statutory authority
-- Federal Register notices
-- CBP CSMS guidance
- Note that certain tariff regimes may override or preclude others.
-- For example: some Section 232 regimes (e.g., automobiles, MHDV, semiconductors) may exclude the product from additional tariff actions such as Section 301 or IEEPA, depending on current legal guidance.
- Assess eligibility under Chapter 98 provisions, including:
-- U.S. goods returned
-- Repairs or alterations
-- Assembly abroad
- For each tariff layer, clearly specify the dutiable value basis (e.g., full value vs. value-added)
STEP 6: Trade Agreements and Preferential Programs
- Identify whether the product qualifies for any U.S. free trade agreement (FTA) or preferential program based on its origin
- Apply the preferential duty rate where eligibility criteria are met
- Clarify whether preferential treatment:
-- Replaces the MFN rate, and/or
-- Stacks with additional tariffs (e.g., Section 301 or 232), where applicable
STEP 7: Tariff Rate Calculation Summary (Including Chapter 99 Codes)
Present the final tariff determination in a clear, step-by-step breakdown, including:
- Base MFN duty rate
- Each additional tariff layer, with:
-- Legal basis (e.g., Section 301, Section 232, IEEPA)
-- Applicable rate
-- Any exemptions applied
-- Corresponding HTSUS Chapter 99 code(s) required for customs filing
- The total combined effective tariff rate
- Indicate whether duty drawback may apply to any component
STEP 8: Plain Language Summary (for non-experts and small business owners)
In 3–5 sentences, explain:
- The approximate total tariff rate
- The main driver of the tariff burden
- The most important exemption, strategy, or classification issue the importer should explore with a customs broker
SOURCE REQUIREMENTS:
Use only official U.S. government sources, and cite them clearly:
- Harmonized Tariff Schedule of the United States (HTSUS)
- Federal Register notices
- Executive Orders and Presidential Proclamations
- USTR announcements and tariff lists
- CBP Cargo Systems Messaging Service (CSMS) bulletins
Where discrepancies exist, treat CBP CSMS bulletins as the final source of operational guidance.
Your analysis must:
1. Start with the most relevant Harmonized Tariff Schedule of the United States (HTSUS) code that is applicable to this HS code – if there are sub-categories, layout the range and use the lowest and highest applicable MFN duty rate from this list as an illustration.
2. Identify and apply relevant additional duties on the HTS code imposed by the following regulations after confirming their legal status:
-- Section 301 tariffs
-- Section 232 tariffs
-- Section 122 tariffs
-- International Emergency Economic Powers Act (IEEPA)
-- Or any other applicable regulations that supersede the ones above
3. Apply any non-stacking or precedence rules where multiple tariffs overlap as well as any relevant trade agreements signed with the United States that have entered into force.
4. Present the tariff rate calculation in a step-by-step format while outlining the relevant product or regulatory thresholds that apply.
5. Simplify the overall answer in a concise manner that is applicable to a small business owner.
6. Use ONLY official US government sources, citing:
-- Federal Register notices
-- Executive Orders or Presidential Proclamations
-- The HTSUS
-- USTR notices
-- CBP Cargo Systems Messaging Service (CSMS) bulletins – which are the final "source of truth"
If you want to use another LLM, copy this prompt generated for you and paste it to your preferred LLM platform.
For US-related trade, we’ve designed our prompt to account for the latest trade regulations and governmental policy.
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