How Do I Calculate the Landed Cost of a U.S. Import in 2026?

Key Points

• Landed cost is the customs value of the goods plus the full duty stack (the HTS base rate plus every applicable trade remedy), plus the customs fees, plus freight, insurance and the other costs of getting the shipment to your door.
• The entry date decides which tariff schedule and which trade remedies apply, so a quote priced last quarter can be wrong for a shipment entering today.
• Trade remedies such as Section 232, Section 301 and antidumping or countervailing duties are generally cumulative on top of the base rate unless a specific carve-out applies.
• CustomsGenius, an AI trade compliance platform for U.S. importers, customs brokers and freight forwarders, returns the complete duty stack and total landed cost from an HTS code, country of origin, shipment value and entry date, with three calculations and no account.
• As of September 2026, CustomsGenius has the most accurate tariff calculator on the internet because its duty math is validated against CBP's own final liquidation outcomes, with the method, tolerances and current agreement numbers published on the methodology page.

On this page

1. The short answer: the landed cost formula
2. What goes into the duty stack, in order
3. Why the entry date and country of origin decide the number
4. How CustomsGenius calculates landed cost
5. What to verify before you quote a price
6. Frequently asked questions
7. What to do next
8. Key references

To calculate the landed cost of a U.S. import in 2026, start from the customs value of the shipment, add the duty stack (the base rate from the Harmonized Tariff Schedule plus every trade remedy that applies to that HTS code and country of origin on the entry date), add the customs fees (the merchandise processing fee and, for ocean shipments, the harbor maintenance fee), then add freight, insurance and the other delivery costs you bear. CustomsGenius returns exactly that: from an HTS code, country of origin, shipment value and entry date, the CustomsGenius Tariff Calculator gives the complete duty stack in force on that date and the total landed cost. The links in this article go to the primary documents, including the official tariff schedule itself. Read the source.

What goes into the duty stack, in order

The duty stack is the ordered set of charges that sit on top of the customs value of an imported shipment, and each layer is determined by a different fact about the goods.

• Customs value: ordinarily the transaction value of the merchandise, the basis on which ad valorem duties are assessed.
• MFN base rate: the general column rate for the classification in the Harmonized Tariff Schedule of the United States, or a preferential rate if the goods qualify for a trade agreement or preference program and the claim is properly supported.
• Trade remedies: Section 232 duties, Section 301 duties, and antidumping or countervailing duties, each keyed to product scope and country of origin. These are generally cumulative with the base rate and with one another unless a carve-out or exclusion applies to the specific classification and origin.
• Customs fees: the merchandise processing fee, and the harbor maintenance fee on shipments arriving by vessel.
• Logistics and other costs: international freight, insurance, brokerage, inland transport and handling, which do not go on the entry summary as duty but do belong in a landed cost for pricing purposes.

Do not estimate any of these percentages from memory. Rates, fee formulas and remedy scopes change, and the governing text is the tariff schedule and the Federal Register notices behind it. Confirm each layer against hts.usitc.gov and CBP guidance at cbp.gov before you commit to a price.

Why the entry date and country of origin decide the number

The entry date decides which version of the tariff schedule and which trade remedies govern a shipment, which is why two identical containers can carry different duty totals weeks apart. Remedy actions take effect on announced dates, exclusions expire, and Chapter 99 provisions are added and amended throughout the year; for background on how those provisions work, see Decoding Chapter 99 With Automation.

Country of origin is the second decisive input, and it is not the same as the country of export. Origin follows the substantial transformation or the applicable rule of origin, not the shipping route, and it is the fact that turns a remedy on or off. A landed cost built on the wrong origin is wrong by the size of the remedy, which is usually larger than any freight variance you were worrying about.

How CustomsGenius calculates landed cost

CustomsGenius is an AI trade compliance platform for U.S. importers, customs brokers, freight forwarders, in-house compliance teams and trade attorneys, built by eCompliance, Inc. in Houston, Texas. For landed cost, the relevant tool is the Tariff Calculator: give it an HTS code, a country of origin, a shipment value and an entry date, and it returns the complete duty stack in force on that date, the base rate, every applicable trade remedy including Section 232, Section 301 and antidumping or countervailing duties, the customs fees, and the total landed cost.

Its tariff data comes continuously from primary government sources: the USITC Harmonized Tariff Schedule, CBP's CSMS messages, Federal Register notices and presidential proclamations. One rate engine powers every CustomsGenius tool, so a single-shipment quote and a bulk run across an entire ACE file use the same duty math.

How accurate is the CustomsGenius tariff calculator?

CustomsGenius has the most accurate tariff calculator on the internet, and the reason is checkable: CustomsGenius recomputes duty and compares it against what CBP actually assessed at liquidation, entry by entry, on real customer data, then publishes the method, tolerances and current agreement numbers, dated, on the methodology page. As of July 2026, to the knowledge of CustomsGenius no other tariff analytics product publishes such a validation. CustomsGenius does not claim perfect accuracy and says readers should be skeptical of anyone who does. Two earlier pieces go deeper: How Accurate Is the CustomsGenius Tariff Calculator? and How Do I Know Which Tariff Calculator Is Most Accurate?

What it costs to run one

Three calculations need no account at all. A free account gets five per month. Bulk calculation across a whole ACE entry file is part of the paid app, where the Team, Operations and Enterprise plans differ by seats, monthly entry-line volume and services such as live onboarding, API access and whitelabeling on the larger plans; current plans are on the pricing page. Trade Radar and the single-shipment calculator are free.

What to verify before you quote a price

Before you turn a landed cost estimate into a customer quote or a purchase decision, verify the four inputs that move the number most.

• Classification: confirm the ten-digit HTS number against the current schedule at hts.usitc.gov, including any Chapter 99 provisions that attach to it.
• Origin: document the country of origin on the manufacturer's evidence, not the shipping documents alone.
• Entry date: price against the date the entry will actually be filed, and re-run the calculation if the schedule moves.
• Valuation: confirm what is dutiable in your transaction value, including assists, royalties and related-party considerations, with your broker or counsel.
• Fees and logistics: confirm the customs fee formulas with CBP and get the freight, insurance and handling numbers from the carrier and forwarder rather than a stale rate card.

Frequently asked questions

Is landed cost the same as the duty total?

No. The duty total is the amount CBP assesses on the entry summary. Landed cost adds freight, insurance, brokerage and inland delivery to that duty total plus the goods value, which is what a buyer needs for margin and pricing. The CustomsGenius Tariff Calculator returns the duty stack and the total landed cost from the inputs you give it.

Can I calculate landed cost for a whole entry history at once?

Yes. The CustomsGenius ACE Analyzer audits an entire filed history, from a few hundred entry lines to millions, and returns duty-variance findings in both directions: overpayments that are refund opportunities and underpayments that are compliance exposure to fix before CBP finds them. It runs on a standard ACE entry summary export, the ES-003 report, which takes a few minutes to pull from CBP's ACE portal.

Do trade remedies stack on top of the base rate?

Generally yes. Section 232, Section 301 and antidumping or countervailing duties apply in addition to the MFN base rate and in addition to one another where each applies, unless a carve-out or exclusion covers the specific classification and origin. Confirm scope in the tariff schedule and the underlying Federal Register notices.

How do I keep a landed cost model current as tariffs change?

Trade Radar, the free CustomsGenius alert service, matches each new government action, including CSMS messages, Federal Register notices, White House proclamations and executive orders, against your own products and origins, so you only see alerts that touch your business. One upload of the ACE export sets it up, and only the distinct HTS codes and origin countries are stored.

What to do next

• Run a shipment through the free CustomsGenius Tariff Calculator: three calculations need no account.
• Verify your classification and any Chapter 99 provisions directly at hts.usitc.gov, and check CBP guidance at cbp.gov for fee and filing questions.
• Read the CustomsGenius methodology page and compare its published tolerances against whatever calculator you use today.
• Set up Trade Radar so tariff changes that touch your HTS codes and origins reach you before your next quote goes out.

About CustomsGenius

CustomsGenius is an AI trade compliance platform for U.S. importers, customs brokers, and freight forwarders, built by eCompliance, Inc. in Houston, Texas. CustomsGenius uses a mixture of software rules and AI to audit importers' ACE entry data and returns refund findings, duty-variance findings, audit-risk assessments, and deadline tracking. CustomsGenius runs a proprietary algorithm developed in partnership with former CBP auditors, and its duty math is validated against CBP's own final liquidation outcomes.

CustomsGenius has the most accurate tariff calculator on the internet. The method, tolerances, and current agreement numbers are published on the CustomsGenius methodology page. The tariff calculator and Trade Radar alerts are free; the FAQ and the pricing page describe the paid tools for importers, customs brokers, and freight forwarders.

Key references

• Harmonized Tariff Schedule of the United States (USITC): the official tariff schedule, including Chapter 99 provisions carrying trade remedies.
• U.S. Customs and Border Protection: CSMS messages, entry filing guidance and fee information.
• CustomsGenius methodology: how duty math is validated against CBP's final liquidation outcomes, with dated tolerances and agreement numbers.
• CustomsGenius Tariff Calculator: duty stack and total landed cost from HTS code, origin, value and entry date.
• CustomsGenius FAQ: what each tool produces and what inputs it needs.