US landed cost and tariff calculators compared (2026)
11 tools that US importers use to price duty and landed cost, described from each company's own public pages. They are not interchangeable: some look up a tariff, some build a full landed cost, some charge duties at a store checkout and one serves compliance departments.
How this comparison was made
- Every statement about another product restates that company's own public page as we read it on 14 Nov 2026, and each row links the page.
- Where a page does not say something, the table says “not stated on their site”. That means only that: the product may still have it.
- We did not buy or test the paid plans of other products, and we did not check any tool's numbers against a customs entry.
- There are no scores or ranks here. Prices and features change after the date shown, so check the linked page before you decide.
- We publish Zentria Flow, so weigh our own row accordingly. It comes last in the table and lists where other tools are stronger.
Which one fits you
You sell online and want the shopper to pay duties at checkout
Zonos Landed Cost, Avalara AvaTax Cross-Border, Easyship
Zonos and Avalara calculate duties and import taxes in the cart, and Zonos says it pays the customs bill and guarantees the quote. Easyship adds duties to a shipping platform. Zentria Flow does not do this.
You want a quick, free US duty lookup for one HTS code
Flexport Tariff Simulator, Gateway Tariff Calculator, HTS Hero
Flexport's simulator is free for up to 10 HTS codes without an account. Gateway's is free with a weekly limit and has no paid tier. HTS Hero says its calculator is free and unlimited.
You want landed cost for your own products and an email when a tariff changes one of them
Zentria Flow, HTS Hero, US Tariff Rates
Zentria Flow re-prices watched products and emails the cost before and after. HTS Hero's Duty Guard and US Tariff Rates' alerts also watch your codes. Flexport and Gateway send alerts too, Flexport's inside a client account.
You do not know the HTS code and have a catalog to classify
TariffWise, US Tariff Rates
TariffWise classifies product descriptions in bulk and attaches duty and landed cost. US Tariff Rates' bulk lookup also accepts descriptions.
You need to check what a past entry should have paid
HTS Hero, US Tariff Rates
HTS Hero's Duty Guard Pro and US Tariff Rates' Team plan both describe audits against the rates in force on the entry date.
You run a trade compliance department
Descartes CustomsInfo
Descartes CustomsInfo offers rulings, regulation content for 190+ countries and feeds for ERP systems. None of the other tools here is built for that.
The comparison table
Each cell is what the tool's own site said on 14 Nov 2026. Scroll sideways on a small screen.
| Tool | Built for | US tariff layers its site names | Bulk / CSV | API | Alerts on tariff changes | Store integrations | Published price | Source |
|---|---|---|---|---|---|---|---|---|
| Flexport Tariff SimulatorUS tariff lookup | A free estimate of US import duty from an HTS code or product name, shipment value, origin and mode of transport, from a freight forwarder and customs broker. | The result is broken down by tariff type; the page does not name the programs. AD/CVD, MPF and HMF: not stated on the page checked (Pro lists “additional fees”). | Bulk HTS uploads in Tariff Simulator Pro, which needs a Flexport Client App account. | Not stated on their site | Email alerts when a duty change affects one of your codes, in Pro. Every rate update is logged in a public changelog. | Not stated on their site | Free: up to 10 HTS codes without an account. Pro unlocks by signing in with a Flexport Client App account; no price for it is stated. | Tariff Simulator product pageChecked 14 Nov 2026 |
| Gateway Tariff CalculatorUS tariff lookup | A free US import duty calculator from a freight company, with optional CBP fees, a landed cost option and a freight quote. US imports only, by its own description. | Section 301, Section 232 and the forced-labor Section 301 duty are named on the calculator page; Section 338 on Canada in its guide. MPF and HMF are an option. Its guide says AD/CVD is priced and marked partial. | Bulk upload of up to 5 rows a file free, 500 for Gateway customers with an activated account. | No REST API stated. An MCP server is offered. | Free email alerts: add an HTS code to hear when its duty changes. A public policy log. | Not stated on their site | Free, with no paid tier. Its guide gives 5 calculations per rolling 7 days without an account, 10 with an email address, and unlimited for Gateway Lines customers. | Calculator, Gateway's guide of 21 Oct 2026Checked 14 Nov 2026 |
| US Tariff RatesUS tariff lookup | US HTS lookup, a landed cost calculator, tariff alerts and an entry audit for importers and customs brokers. | Base duty, Section 301, Section 232, MPF and HMF, with freight and insurance. AD/CVD is shown as exposure or a risk flag, not added as entry liability. The forced-labor tariff is not named on the pages checked. | Yes. CSV upload or paste: 10 items per request on the free plan, 100 on Pro, with CSV export. | REST API with a free tier. | Yes. Alerts on watched HTS codes: 5 codes on the free plan, unlimited on Pro. | Not stated on their site | Free $0 (50 credits a month, 10 lookups a day). Pro $49/month. Team $199/month. Enterprise: custom. Annual billing is offered at a discount. | Pricing, Calculator, Bulk lookup, AlertsChecked 14 Nov 2026 |
| HTS HeroUS tariff lookup | A free US tariff calculator, paid tariff alerts on your products (Duty Guard), an audit of past entries for overpaid duty, and a classification assistant. | Base rate, each Chapter 99 tariff (its example shows Section 301 on China and the Section 301 forced-labor duty; its FAQ covers Section 232), exemptions, trade preferences, MPF and HMF. AD/CVD is not in the estimate; a free account lists the cases that may apply. | You upload your product list for alerts and audits, with export to CSV or Excel. A bulk mode for the calculator: not stated on their site. | Not stated on their site | Yes. Duty Guard alerts by email, and in Slack or Microsoft Teams on larger plans, with the rate before and after. | Not stated on their site | Calculator: free and unlimited, no account. Duty Guard Essentials $9, $19, $39 or $79 a month for 10, 25, 100 or 500 products. Duty Guard Pro $49, $79, $149 or $299 a month. Classification assistant from $39 a month. 7-day free trial; 15% off with annual billing. | Home page and FAQ, Tariff calculator, Tariff alertsChecked 14 Nov 2026 |
| TariffWiseHS classification with landed cost | AI classification of a product description to a 10-digit HTS code with a written rationale, then duty and landed cost for that code, one product or a CSV of a catalog. | Its landed cost worksheet has a base duty rate, one Section 301 / 232 layer, MPF and HMF. The forced-labor tariff and AD/CVD: not stated on the pages checked. | Yes. Bulk CSV classification on the Growth plan and above. | REST API on the Business plan and above. | Not stated on their site. The landed cost page says to run the file again when a tariff changes. | Not stated on their site | Starter $59/month, Growth $199/month, Business $499/month, Enterprise $998/month; yearly billing is half the monthly rate. No free plan; a free live demo needs no signup. | Landed cost calculator, PricingChecked 14 Nov 2026 |
| Zonos Landed CostCheckout duties | Duties, taxes and fees shown to the shopper at an online checkout, with a guarantee: Zonos says it pays the difference when customs charges more than it quoted, and it pays the duty and tax invoices. | Import duties, taxes and VAT, carrier and brokerage fees, and de minimis thresholds for 200+ countries and territories. Section 301, Section 232, the forced-labor tariff, AD/CVD and MPF/HMF are not named on the pages checked. | Not stated on their site | GraphQL API. | Not stated on their site | Plugins for BigCommerce, Adobe Commerce, Miva and WooCommerce; a Zonos Duty and Tax app for Shopify. | Not published. The pricing address leads to a contact-sales form. | Landed Cost, Landed Cost docs, Contact salesChecked 14 Nov 2026 |
| Avalara AvaTax Cross-BorderCheckout duties | Customs duties and import taxes calculated or estimated in the shopping cart, on the same platform as Avalara's sales tax, VAT and GST calculation. | Customs duties and import taxes, by HS code or estimated from an item description. Section 301, Section 232, the forced-labor tariff, AD/CVD and MPF/HMF are not named on the pages checked. | Not stated on their site | Yes. The page says you connect through integrations or through its API. | Not stated on their site | Integrations with ecommerce and ERP systems. Avalara says it powers cross-border compliance for Shopify Markets and eBay International Shipping. | Not published for AvaTax Cross-Border. The page leads to a contact form. | AvaTax Cross-Border, Cross-border solutionsChecked 14 Nov 2026 |
| Descartes CustomsInfoEnterprise compliance | Trade research and classification for compliance teams: HTS code search, rulings, regulation updates, a landed cost calculator and collaboration tools, with trade content for 190+ countries. | Not stated on their site | Not stated on their site | It says it integrates with ERP, ecommerce and other business systems, naming Oracle and SAP. A public API is not described on the pages checked. | Regulation updates are listed as a feature. Alerts on a product's duty: not stated on their site. | Ecommerce solutions are listed; no store plugin is named on the pages checked. | Not published. The site offers a free trial and a contact form. | Descartes CustomsInfo, How it worksChecked 14 Nov 2026 |
| EasyshipShipping with duties | A shipping platform for online sellers: courier rates, labels and tax and duty calculation, with duties paid or unpaid offered at checkout. | Its free calculator estimates import tax and duty from a product category, not an HTS code. Section 301, Section 232, the forced-labor tariff, AD/CVD and MPF/HMF are not named on the pages checked. | Not stated on their site | Yes. Its plans page lists Tax & Duty API calls and HS Code API calls. | Not stated on their site | Ecommerce platform integrations, Shopify among them. | A free plan and paid plans with a 14-day free trial. The plan prices load by script and we could not read them. API calls beyond a plan's quota are listed at $0.003 to $0.005 each. | Duties and taxes calculator, PlansChecked 14 Nov 2026 |
| SimplyDutyLanded cost | An online import duty and tax calculator and HS code classifier for destinations worldwide, with APIs for developers. | Not stated on their site. Its note on US tariff updates carries a last-updated date of 29 May 2025. | File upload is listed as a feature; no limits are stated. | Yes: a duty and tax calculation API, a product classification API and a duty rate API. | Not stated on their site | Not stated on their site | 5 free calculations a day with a free registration. £0.10 per API call, or monthly plans: Basic £9.99 (100 calls), Start-up £49.99 (500), Professional £99.99 (1,000), Enterprise £499.99 (5,000). | Home page, Pricing, API, US tariff update noteChecked 14 Nov 2026 |
| Zentria FlowLanded cost · our own product | Landed cost for one product at a time or a list: duty, VAT or GST, the US tariff layers, fees, and freight and insurance estimates, for 70+ countries. We publish this page. | MFN duty, China Section 301, the forced-labor Section 301 tariff, Section 232, Section 338 on Canada, MPF and HMF, each on its own line. AD/CVD is shown as a notice and is not added to a total. | Yes. The bulk tariff check takes up to 200 rows, pasted or as a .csv file, and exports CSV. Its total is duty only: MPF, HMF and freight are not in it. | REST API with an API key, free tariff endpoints that need no key, and an open-source MCP server. | Yes. A product on the Watchlist is re-priced when a tariff changes and its owner gets an email with the cost before and after, plus one reminder 7 days before a scheduled US change. | A WooCommerce plugin listed on WordPress.org. The Shopify app is not on the Shopify App Store yet. No ERP connector. | Free: 3 calculations a day as a guest, 10 a day with a free account, 1 watched product. Growth $49/month, or $39/month billed annually. Professional $149/month, or $119/month billed annually. Enterprise: custom. | Pricing, Bulk tariff check, API docsChecked 14 Nov 2026 |
The tools, one by one
Flexport Tariff Simulator
US tariff lookup
Flexport's page describes a free simulator for US import duties. You search a product or enter an HTS code, add the shipment value, country of origin and mode of transport, and the result is broken down by tariff type. Flexport says it updates the simulator within 48 hours of an official tariff change and logs every update in a public changelog.
You can look up as many as 10 HTS codes without an account. Signing in with a Flexport Client App account unlocks Tariff Simulator Pro: bulk HTS uploads, partner government agency requirements and additional fees, side-by-side country comparisons, and email alerts when a duty change affects one of your codes.
The simulator itself (tariffs.flexport.com) refused our automated request on 14 Nov 2026, so this row uses only the product page on flexport.com. We did not run the tool.
Source: Tariff Simulator product pageChecked 14 Nov 2026
Gateway Tariff Calculator
US tariff lookup
Gateway Lines is a freight company, and its calculator page says it calculates US import duties with Section 301, Section 232 and forced-labor tariffs. You enter a product or HTS code, origin, customs value and, if you know it, an entry date. CBP fees (MPF and HMF) and a landed cost view are options, and the page offers a freight rate from Gateway.
Gateway's own guide says the tool names any anti-dumping or countervailing duty order that may apply, adds the published cash deposit rate and marks the estimate partial until the supplier and the order's scope are confirmed. The same guide lists its limits: 5 calculations per rolling 7 days without an account, today or future entry dates only, US imports only, and bulk files capped at 5 rows unless you ship with Gateway.
Source: Calculator, Gateway's guide of 21 Oct 2026Checked 14 Nov 2026
US Tariff Rates
US tariff lookup
US Tariff Rates describes a workflow from HTS lookup to filing. Its calculator takes an HTS code, origin, unit price and quantity, shipping mode and Incoterms, and itemizes product cost, freight and insurance, the base duty, each additional duty layer such as Section 232 or Section 301, then MPF and HMF. Measures that need more facts are flagged as risks and left out of the total.
The pricing page lists a free plan with 10 lookups a day and alerts on 5 codes, Pro at $49 a month with the landed cost calculator uncapped, bulk lookup of up to 100 HTS codes per request and monitoring on unlimited codes, and Team at $199 a month with entry-date audits by web and API.
Source: Pricing, Calculator, Bulk lookup, AlertsChecked 14 Nov 2026
HTS Hero
US tariff lookup
HTS Hero says its tariff calculator is free and unlimited with no account. You enter an HTS code, country of origin, customs value and entry date, and it lists the base rate, every Chapter 99 tariff in force on that date, exemptions, trade preferences, MPF and, for ocean shipments, HMF. Anti-dumping and countervailing duties are not added to the estimate; a free account shows the cases that may cover the import.
The paid products are priced by the number of products, where a product is one HTS code from one country of origin. Duty Guard Essentials sends an alert when a new tariff affects your products, from $9 a month for 10 products. Duty Guard Pro recalculates past entries with the rules in force on the entry date and flags duty you may have overpaid, from $49 a month. HTS Hero says it is not a customs broker and never files entries or refund claims.
Source: Home page and FAQ, Tariff calculator, Tariff alertsChecked 14 Nov 2026
TariffWise
HS classification with landed cost
TariffWise starts from the product description, not the code. Its classifier returns a 10-digit HTS code, the heading text, a written rationale and the nearest alternative codes, then the duty and an estimated landed cost for the lane you pick. Its footer says estimates are AI guidance, not a binding customs ruling.
The free landed cost worksheet on its site runs in the browser: you enter goods value, freight, insurance, brokerage, a base duty rate and a Section 301 / 232 rate, and it adds MPF and HMF. Paid plans start at $59 a month for 100 classifications; bulk CSV runs come with Growth at $199 a month and the REST API with Business at $499 a month.
Source: Landed cost calculator, PricingChecked 14 Nov 2026
Zonos Landed Cost
Checkout duties
Zonos Landed Cost is built for a store that sells across borders. When a shopper enters a destination, it calculates import duties, taxes, carrier fees and brokerage fees and shows the total before payment. Zonos says it calculates for over 200 countries and territories and includes HS classification through Zonos Classify.
What sets it apart on its own page is what happens after the sale: with delivered-duty-paid shipping the duties and taxes are billed to Zonos, it pays the invoices, remits taxes under schemes such as EU IOSS and UK VAT, and covers the difference if customs charges more than the quote. No price is published.
Source: Landed Cost, Landed Cost docs, Contact salesChecked 14 Nov 2026
Avalara AvaTax Cross-Border
Checkout duties
Avalara describes AvaTax Cross-Border as a way to collect customs duties and import taxes at checkout, so a buyer gets a delivered-duty-paid price. You supply a product catalog with HS codes or item descriptions and destination countries; duties are calculated for classified items and estimated for the rest. A separate Avalara product classifies tariff codes.
It fits a company that already runs Avalara for sales tax, VAT or GST and wants duties in the same system. Its page does not publish a price or say how US Chapter 99 tariffs are itemized.
Source: AvaTax Cross-Border, Cross-border solutionsChecked 14 Nov 2026
Descartes CustomsInfo
Enterprise compliance
Descartes CustomsInfo is trade content and classification software for companies with a compliance function. Its site describes HTS code classification with AI, duty and tariff determination, landed cost calculation, rulings and explanatory notes, and content from more than 6 million regulatory sources that can feed ERP systems such as Oracle and SAP. Denied-party screening is part of the wider Descartes suite.
It is the one tool here aimed at an enterprise trade department, not a single importer pricing a purchase order. No price is published.
Source: Descartes CustomsInfo, How it worksChecked 14 Nov 2026
Easyship
Shipping with duties
Easyship is shipping software first. Its free duties and taxes calculator takes the ship-from and deliver-to countries, the product's country of origin, a selling price and a product category, and returns an effective tax and duty rate for that category. For a specific HS code it points you to an Easyship account.
Its page says it calculates tariffs, taxes and duties for more than 200 destinations and lets a store offer delivered-duty-paid or unpaid options at checkout. It suits a seller who also needs the label and the courier.
Source: Duties and taxes calculator, PlansChecked 14 Nov 2026
SimplyDuty
Landed cost
SimplyDuty is live and offers an import duty and tax calculator, HS code lookup and duty rate lookup, each also available as an API. Registering gives 5 free calculations a day, and one calculation in the online calculator counts as one API call against a plan.
Its prices are published in pounds: £0.10 per call, or monthly plans from £9.99 for 100 calls. The pages we read do not list which US tariff programs it itemizes.
Source: Home page, Pricing, API, US tariff update noteChecked 14 Nov 2026
Zentria Flow (our own product)
Landed cost
Zentria Flow prices an import before the purchase order. You enter a product, an origin and a destination and get each duty and fee on its own line. For US entries that means the MFN duty, China Section 301, the forced-labor Section 301 tariff, Section 232 and Section 338 on Canada, then MPF and HMF. The calculator can also price a chosen entry date up to 12 months ahead.
The paid part is the Watchlist: a watched product is re-priced when a tariff changes and you get an email with the cost before and after.
Price. Free: 3 calculations a day as a guest, 10 a day with a free account, 1 watched product. Growth $49/month, or $39/month billed annually. Professional $149/month, or $119/month billed annually. Enterprise: custom. The full list is on the pricing page.
Where other tools are stronger
- It does not collect duties from a shopper at checkout, pay duty and tax bills or file anything with a customs authority. Zonos and Avalara do the checkout part.
- It has no rulings library, denied-party screening or trade-content feed for an ERP. Descartes CustomsInfo is built for that.
- Coverage is 70+ countries. Zonos, Easyship and Descartes each state a larger number on their own pages.
- Anti-dumping and countervailing duties appear as a notice and are never in a total. Gateway says it prices them, and HTS Hero and US Tariff Rates list the cases that may apply.
- The free allowance is 3 calculations a day as a guest and 10 with a free account. HTS Hero says its calculator is free and unlimited.
- The HS code it suggests is an AI suggestion to confirm with a customs broker, and the company was founded in 2026.
What a landed cost calculator must include in 2026
US duty is no longer one rate. Since the IEEPA tariffs were struck down in February 2026 and the Section 122 surcharge ended on 24 July 2026, the bill is a stack of separate programs, and a calculator that misses one gives a precise number that is wrong. Check any tool, ours included, against this list:
- Base duty. The Column 1 (MFN) rate for the 10-digit HTS line, on the customs value.
- Section 301. Additional duty on Chinese goods by list, on most Brazilian goods, and from 1 January 2027 on Nicaraguan goods with no CAFTA-DR claim.
- The forced-labor Section 301 tariff. 10% or 12.5% on goods from 60 economies since 24 July 2026, unless the tariff line is exempt.
- Section 232. Steel, aluminum and copper, autos and parts, trucks, wood products and drones. Section 232 goods are exempt from the forced-labor tariff, except drones and, from 4 December 2026, solar goods, which pay both.
- Section 338 on Canada. An extra 50% on listed Canadian lines since 22 August 2026, on top of every other duty.
- MPF and HMF. The Merchandise Processing Fee on every formal entry and the Harbor Maintenance Fee on ocean cargo.
- Freight, insurance and brokerage. Not duty, but part of landed cost. A duty calculator that stops before them is answering a narrower question.
Anti-dumping and countervailing duties are not in most totals. They are set per exporter and can exceed the value of the goods, so an HTS code and a country cannot decide them. A tool that shows no AD/CVD line has not told you the product is clear. Ask a customs broker whether an order covers your supplier and product.
A quick test for any calculator: a cotton T-shirt, HTS 6109.10.00, from China. Our engine gave 36.5% on 10 Nov 2026: 16.5% base duty, 7.5% Section 301 and 12.5% forced-labor tariff, before MPF and HMF. The example on HTS Hero's home page showed the same three lines on 14 Nov 2026. If a tool returns only the 16.5%, it is showing the base rate and nothing else. Run it yourself in the tariff checker.
Rates are right for a day. Dated changes are already scheduled, and they are listed on the US tariff changes calendar. Whatever tool you use, its result is a planning estimate, not a customs ruling.
Questions
Which landed cost calculator should a US importer use?
It depends on the job. To charge duties to a shopper at checkout, look at Zonos or Avalara AvaTax Cross-Border. For a quick free US duty lookup, Flexport Tariff Simulator, Gateway Tariff Calculator and HTS Hero are free to start. For landed cost on your own products with an email when a tariff changes, Zentria Flow, HTS Hero and US Tariff Rates watch your codes. To classify a catalog from product descriptions, TariffWise. For an enterprise compliance team, Descartes CustomsInfo.
What must a US landed cost calculation include in 2026?
The base (MFN) duty, any Section 301 duty, the forced-labor Section 301 tariff that began on 24 July 2026, Section 232, Section 338 for Canadian goods, the Merchandise Processing Fee, the Harbor Maintenance Fee on ocean cargo, and then freight, insurance and brokerage. The layers do not simply add up: Section 232 goods are exempt from the forced-labor tariff, with drones and solar goods as exceptions.
Do these calculators include anti-dumping and countervailing duties?
Mostly not in the total. AD/CVD rates are set per exporter, so an HTS code and a country cannot decide them. HTS Hero says it does not add them to the estimate and lists the cases that may apply. US Tariff Rates flags them as a risk. Gateway says it adds the published cash deposit rate and marks the estimate partial. Zentria Flow shows a notice and never adds them to a total. Check the order's scope with a customs broker before you rely on any of them.
Which of these tools are free?
On 14 Nov 2026 their own pages said: Flexport Tariff Simulator is free for up to 10 HTS codes without an account. Gateway Tariff Calculator is free with no paid tier. HTS Hero's calculator is free and unlimited. US Tariff Rates has a free plan with 10 lookups a day. SimplyDuty gives 5 free calculations a day with a registration. Zentria Flow gives 3 calculations a day as a guest and 10 a day with a free account. TariffWise has no free plan but a free demo. Zonos, Avalara and Descartes do not publish prices.
Which tools alert me when a tariff changes on my products?
Five of them describe alerts on their own pages. Zentria Flow re-prices each product on your Watchlist and emails the cost before and after. HTS Hero's Duty Guard sends alerts from $9 a month for 10 products. US Tariff Rates watches 5 codes on its free plan. Gateway sends free email alerts for an HTS code. Flexport sends them in Tariff Simulator Pro, which needs a Flexport client account.
Zentria Flow publishes this page. Why should I trust it?
Weigh our own row accordingly. Every statement about another product restates that company's own public page as we read it on 14 Nov 2026, and each row links the page so you can check it. Where a page does not say something, the table says so instead of guessing. We did not buy or test the paid plans of other products, we give no scores or ranks, and prices and features change after the date shown.
Related guides
Try Zentria Flow on your own product
3 calculations a day with no account and 10 a day with a free account. A free account also watches one product and emails you when a tariff change moves its cost. The result is an estimate for planning, not a customs ruling.