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TOOLS · tariffs-compliance

Tariff Impact Calculator

HS code + origin + destination → duty, VAT/GST, total tariff cost. FTA check included.

What this tool does

This calculator estimates the import duty exposure for a product shipped to a specific destination market. You enter an HS code, the FOB unit value, your expected annual shipment volume, and the destination country. The tool returns the per-unit duty amount, the total annual duty liability, and a sensitivity comparison between MFN (Most Favored Nation) rates and preferential rates available under free trade agreements.

The output helps you model landed cost scenarios before finalizing supplier contracts, pricing negotiations, or market-entry decisions. Rather than pulling rate schedules manually from multiple customs databases, you get a single view of duty exposure under both standard and preferential tariff regimes, making it easier to quantify the ROI of pursuing FTA certification or certificate of origin documentation.

Who should use it

Trade finance leads, export managers, procurement teams, and customs brokers use this tool when evaluating new markets, renegotiating supplier terms, or assessing the cost impact of tariff changes. It is particularly useful when you are comparing multiple destination countries for the same product, or when you need a quick estimate of duty savings available through FTA eligibility before investing in origin documentation.

Inputs

  • HS Code (6-digit): The Harmonized System classification at the 6-digit level. This is the international standard; destination countries extend to 8 or 10 digits, but the tool uses the 6-digit base for cross-border comparability. Example: 8471.30 for portable computers.

  • FOB Unit Value (USD): The free-on-board price per unit in US dollars. This is the customs valuation base before freight and insurance. If your commercial invoice shows CIF, back out the freight and insurance to arrive at FOB.

  • Annual Volume (units): The number of units you expect to ship to this destination over a 12-month period. For bulk commodities measured in weight or volume, convert to the unit of measure matching your HS code classification.

  • Destination Country: The import country where duties will be assessed. The tool covers 50 major trading economies. If your destination is not listed, the MFN rate shown is sourced from the WTO Tariff Download Facility.

  • FTA Eligibility (Yes/No): Indicate whether your product qualifies for preferential treatment under a free trade agreement between the origin country and the destination. If "Yes," the tool shows the preferential rate alongside the MFN rate. If "No," only the MFN rate applies.

  • Origin Country: The country of manufacture or last substantial transformation. This determines which FTAs are potentially applicable and which preferential rate schedule to reference.

Assumptions

The calculator assumes the HS code you enter is correctly classified. Misclassification is one of the top causes of customs penalties and duty underpayment or overpayment. The tool does not validate whether your product description matches the HS code; you must verify classification independently using the destination country's binding tariff information or a licensed customs broker.

Duty rates are applied to the FOB value as declared. In practice, customs authorities in some jurisdictions adjust declared values using transaction value methods or reference pricing. The tool does not account for valuation adjustments, anti-dumping duties, countervailing duties, safeguard measures, or quota-based surcharges that may apply to specific HS codes in specific origin-destination pairs.

Limitations

This tool does not determine FTA eligibility. It shows the preferential rate if you indicate eligibility, but proving origin under an FTA requires meeting rules of origin criteria, such as regional value content, tariff shift, or specific processing requirements, and obtaining a valid certificate of origin. The tool cannot verify whether your supply chain meets those criteria.

The calculator does not cover trade remedy duties. Anti-dumping and countervailing duties can add 10% to over 200% on top of MFN rates for specific products from specific origins. You must check the destination country's trade remedy database separately. For US imports, consult the USITC's AD/CVD orders database. For EU imports, check the European Commission's TARIC database.

How results are calculated

Per-unit duty is calculated by multiplying the FOB unit value by the applicable ad valorem duty rate. For example, if your FOB unit value is USD 500 and the MFN rate is 4.5%, the per-unit duty is USD 22.50.

Annual duty exposure is the per-unit duty multiplied by annual volume. Using the same example with 10,000 units per year, your annual duty liability is USD 225,000 under MFN treatment.

The sensitivity comparison shows the same calculation using the preferential FTA rate. If the preferential rate is 0% under a qualifying agreement, your annual duty exposure drops to zero, representing USD 225,000 in potential savings, subject to the cost of obtaining and maintaining FTA compliance documentation.

Where HS codes carry specific duties (a fixed amount per unit or weight rather than a percentage), the tool converts to an ad valorem equivalent using the average unit value for that HS code from UN Comtrade data. This conversion is an approximation; actual specific duties should be verified in the destination tariff schedule.

Sources and data freshness

Last data refresh: 2026-05-05.

Disclaimer

This calculator provides indicative estimates for planning purposes only. It does not constitute legal, customs, or tax advice. Tariff rates change frequently due to trade negotiations, legislative action, and trade remedy proceedings. Before making import decisions, verify the applicable duty rate with the destination country's customs authority or a licensed customs broker. For binding classification rulings, apply through the destination country's advance ruling program.