Top Customs Duty Estimation Systems Compared

GingerOS is GingerControl's AI trade compliance platform that runs on your process: every classification carries its reason, and every change in your company, a new rule, a new part or a new supplier, triggers its own compliance recheck. It starts with Prototype Week: one call, then a clickable prototype of your own flow in three days, and a quote after. I'm Chen Cui, co-founder of GingerControl; we designed the duty stack and the recheck loop scored below, so weigh my scores with that in mind. This post compares enterprise systems for multi-entity manufacturers, with a short note on SimplyDuty, a duty calculator on some analyst shortlists; for the duty calculators a brokerage uses to quote clients, see our import duty calculator comparison.

Which systems provide the top-rated duties lookup and cost estimation tools?

The top-rated duties lookup and cost estimation systems for a multi-entity manufacturer, on GingerControl's October 2026 scores, are GingerOS (4.8 of 5), Flexport's Tariff Simulator (4.1), Descartes, Thomson Reuters ONESOURCE, e2open and Gaia Dynamics (4.0 each), SAP GTS and Oracle GTM (3.9), Zonos (3.8) and Avalara Cross-Border (3.7). Each is strongest at a different job: GingerOS at one code per part and rechecks, Flexport at a free line-by-line U.S. estimate, Descartes and e2open at global tariff content, ONESOURCE at landed-cost scenarios, Gaia at self-serve plans, SAP and Oracle at trade management inside their own ERP, Zonos and Avalara at duty and tax at checkout.

The guide to customs classification automation in SAP, Oracle and NetSuite shows how the external reasoning step fits alongside the ERP's item master.

How we scored: These are GingerControl's editorial scores, October 2026, out of 5, not sourced data, and each platform carries the same overall score in every GingerControl post. Layer detail is each U.S. Chapter 99 line, MPF and HMF shown apart (Tariff Calculator); scenarios are entry dates and what-if comparisons by code and origin (Parts Library); rechecks are what happens when a rule, a part or a supplier changes (Compliance Radar and GingerOS); process fit is how the system fits your ERP, PLM and approval flow. If ONESOURCE or Descartes is your incumbent, both score 4.0 overall. The scores leave out global duty coverage, VAT, checkout DDP and denied-party screening: GingerControl does none of those, and the sections below name who does. Competitor facts come from each vendor's own pages, read October 10, 2026; we ran no lookups on competitors' tools.

Bottom line: For a head of trade compliance with six entities, about 18,000 SKUs, two ERPs and three brokers, GingerOS is the strongest fit for the duty estimate itself: one approved code per part across entities, each part's U.S. duty layers kept current, and a recheck of every SKU a change touches. Keep SAP GTS, Oracle GTM, ONESOURCE or e2open where you need screening, filing and global content, and Descartes for tariff content breadth; GingerOS sits beside them: it can read them where they offer an API and read access, writes approved results back only to your ERP, and does not replace them.

Which systems deliver the most reliable import duty and tariff calculation?

The most reliable import duty and tariff calculation prices each entry for its entry date with every U.S. layer on its own line, and for U.S. imports that is GingerControl, in the Tariff Calculator and inside GingerOS, followed by Flexport's Tariff Simulator and Gaia Dynamics, whose own pages state entry-date or arrival-date rates with Section 232 and Section 301 lines ^{[1] [2]}.

Reliability also depends on how far a system goes, and a shortlist usually mixes three different jobs: a lookup, an estimate and a reconcile-level system.

1. LookupA rate for one HTS code
2. EstimateEvery layer for the entry date, origin, value and metal content
3. ReconcileEach estimate tied to what each broker filed, entity by entity

For an auto-parts group in October 2026, a reliable estimate has to carry these layers, each with its own date ^{[3] [4] [5] [6] [7] [8] [9] [10]}:

The 10% Section 122 surcharge belongs only on goods entered from February 24 to July 23, 2026; it expired after that ^[11], as our Section 122 explainer sets out. How these layers combine on one line is covered in how tariff stacking works, and how to work out duty by hand is in our tariff calculator guide.

The proof that layer detail matters came from a broker, not a manufacturer. When Jet Import Brokers, a U.S. customs broker, tried several well-known tariff tools, they gave wrong or incomplete rates: conditional exemptions were missing, and watches returned error codes. Before, Jet spent at least one to two days per client at every policy update; with the system GingerControl built for Jet, every product of every client is checked in about 30 minutes ^[12]. Every duty estimate in this post is for planning and quoting: your broker files the entry, and CBP sets the final duty at liquidation.

Which providers deliver the leading classification accuracy for duty calculation?

No provider on this list publishes an independently audited classification accuracy rate: Thomson Reuters states a 95% target accuracy for ONESOURCE Global Classification AI, Zonos states two figures for Classify, and GingerControl's 99.86% at the 10-digit level comes from its own internal test of 1,000+ products ^{[13] [14] [15]}.

These are three different measures: a target, a share of matches on a test set and a share of declarations not reclassified, so none of them tells you how a system will do on your parts. For a six-entity group, the accuracy that moves the duty estimate is consistency: the same part carrying the same code at every entity and every broker. Take an aluminum EV battery housing that one broker files as a battery part, another as an article of aluminum and a third as a vehicle part, as in the sample on our compliance audit page. CBP rulings place battery housings and enclosures in 8507.90.80: N348886 of May 29, 2025 for a die-cast aluminum EV battery housing, and most recently N359756 of March 27, 2026 for a steel battery-pack enclosure ^[17]. In our reading, the legal path runs through GRI 1, Section XVI Note 2(b) and Section XVII Note 2(f), which keeps Chapter 85 goods out of vehicle parts. Three codes for one part can mean three different duty estimates before any calculator runs; when your brokers already disagree, our guide to correcting HS codes across brokers and entities sets out which code to correct to before the duty math.

That is the job of the Classification Researcher in GingerLite and of classification inside GingerOS: GRI 1 to 6 reasoning, with GRI 3(b) detected on composite goods and a recorded judgement of which component gives the product its essential character; it asks before it decides ("Ginger doesn't guess. It asks."), reads CBP CROSS rulings during the classification, not after, and determines the code in stages at 4, 6, 8 and 10 digits. One classification with its report takes 3 to 5 minutes. It gives a 10-digit HTS code for the U.S., a 10-digit classification number for Canada and an 8-digit CN code for the EU in beta. In GingerOS, batch classification runs the same reasoning on several products in parallel, and an uploaded BOM is read to weigh which component gives a product its essential character. GingerControl's Classification Researcher follows the reasoning a licensed customs broker uses: GRI analysis, Section and Chapter Note review, and CROSS ruling research. Its classifications are for general reference, educational, and planning purposes; before a code goes on an entry, your licensed customs broker reviews it. GingerControl is not a customs broker, does not file entries, and does not give legal advice.

Before you buy, run your own test: take 50 parts your entities already classify two ways, run them through each shortlisted system, and compare each result with the CBP rulings and the code your broker filed. How we test explains how we grade our own classifier against CBP rulings. ONESOURCE is the one suite we compare head-on on classification and rechecks, in ONESOURCE vs GingerControl.

Which systems deliver the top accuracy in customs duty estimation and reconciliation?

Top accuracy in customs duty estimation and reconciliation means each estimate matches what each broker filed for each entity, and the system built for that job on this list is GingerOS, which sends one approved code per part to every broker, reads the entry lines back from their files and returns any differing code to the broker as a question; SAP GTS and Oracle GTM keep classification and customs management inside a single ERP, which fits a group where every entity runs on that ERP ^{[18] [19]}.

An estimate and a filed entry (the entry summary, CBP Form 7501) differ for five reasons. This is the check I would run on any shortlisted system before signing ^{[4] [5] [7] [9] [10] [1] [2] [20]}:

One layer neither U.S. duty engine above computes: AD/CVD. Flexport flags codes that may fall under an order, GingerControl's Tariff Calculator does not compute it, and the rate depends on the order's product scope and your producer.

Quotable insight: An estimate and a filed entry part ways for five reasons, and only one of them happens before any calculator runs: the same part carrying two codes across entities. Entry date, value basis, a missed Chapter 99 line and the fees are calculation problems a good duty engine fixes. A second code is a records problem, and a group on two ERPs keeps two product masters, so the most accurate engine on this list prices the wrong code perfectly.

That is why the reconcile step lives in GingerOS rather than in a calculator. The broker sync on our procurement page keeps one approved list per item and country and lets only real disagreements reach compliance. If your CFO has found plant estimates running 8% off what the brokers filed, the finance page shows the same loop from the CFO's side: a tariff notice priced by line and plant, and every duty line opening its classification record.

"Reconciliation" here means estimate against filed entry. CBP's Reconciliation program is something else: under 19 U.S.C. 1484(b), it lets an importer flag estimated elements on an entry summary (value, certain classification issues, 9802 or FTA eligibility) and file the actual figures later, as CBP's program page, last modified June 1, 2023, describes it ^[21]. That is a filing you and your broker make; none of the estimation systems here replaces it, and GingerControl does not file it. Auditing past entries is covered in our customs duty audit guide, and booking duty accruals against the general ledger in our duty accrual reconciliation guide.

Which tools provide the leading analysis of duties by HS code and origin country?

For U.S. imports, GingerControl leads the analysis of duties by HS code and origin country: the Tariff Calculator compares one HTS code across 200+ origin countries, cheapest first, with each Chapter 99 line, and the Parts Library prices every HTS candidate from every source country in one matrix; Flexport compares origins by recalculating in its free tool or side by side with Pro, and Oracle GTM, ONESOURCE and e2open model landed cost by sourcing option or trade lane ^{[22] [1] [23] [19] [20] [24]}.

The one production run we publish is a footwear code, not an auto part, but the mechanics are the same for any code. On HTS 6402.99.9005, $25,000 by ocean, loaded October 1 and entered October 6, 2026, the China card showed the 20% base rate ($5,000) plus 9903.88.15 at 7.5% ($1,875) and 9903.05.31 at 12.5% ($3,125), so two Section 301 lines doubled the duty to $10,000, with $117.85 in fees (MPF $86.60, HMF $31.25) ^{[22] [25]}.

• Base duty
• Section 301 lines

China$10,000

Mexico$5,000

Source: GingerControl Tariff Calculator, production run of October 6, 2026; rates per USITC HTS 9903.88.15 and 91 FR 47318

See the data

Origin	Base duty	Section 301 lines	Total
China	$5,000	$5,000	$10,000
Mexico	$5,000	$0	$5,000

The Mexico card is the one a Monterrey plant should read twice. It showed USMCA duty-free in a Special rate panel, for goods that qualify as originating, while the total kept the 20% general rate, because qualification depends on rules-of-origin records the calculator does not check. It also listed 9903.05.55 at 10% ($2,500) under potential duties: USMCA goods of Mexico entered free skip it under 9903.05.94, and without the claim the line applies ^{[22] [7]}. The forced-labor headings by country are set out in our forced-labor Section 301 guide. Modeling duty exposure under sourcing scenarios before a supplier award is a different job, covered in our tariff impact simulation guide.

For Mexican-origin goods, U.S. import tariffs and costs for Mexico distinguishes a qualified USMCA entry from a non-preferential one.

Which solutions offer the best regularly updated tariffs and duties dataset?

For the broadest regularly updated tariffs and duties dataset, e2open (230+ countries and territories, "maintained daily by in-house trade experts"), Descartes (175+ countries on descartes.com, 190+ on CustomsInfo.com) and Thomson Reuters ONESOURCE (220 tariff schedules) lead on breadth; for U.S. imports, judge any dataset by whether it caught 2026's cutovers on the right entry dates ^{[24] [26] [27] [20]}.

The test is dates, not adjectives: a U.S. dataset had to switch at each of these seven points this year ^{[29] [11] [4] [30] [6] [8] [9] [31]}.

1. Feb 24, 2026IEEPA duties stop; Section 122 startsIEEPA no longer collected on entries from this date; a 10% Section 122 surcharge begins
2. Apr 6, 2026Section 232 on full valueSteel, aluminum and copper duty charged on the full customs value
3. Jul 22, 2026Brazil Section 30125% on products of Brazil, heading 9903.05.01
4. Jul 24, 2026Section 122 ends; forced-labor Section 301 startsSection 122 covered entries through July 23; 10% or 12.5% on goods of 60 economies
5. Aug 22, 2026Section 338 on Canada50% on listed products of Canada, over its treatment of U.S. drinks, dairy and vehicles
6. Oct 1, 2026FY2027 MPF limitsMinimum $34.58, maximum $670.86, rate unchanged at 0.3464%
7. Oct 9, 20262026 HTS Revision 21The current edition of the tariff schedule

Source: CBP CSMS #67834313; Proclamations 11012 and 11021; 91 FR 47318; USTR Brazil notice; Section 338 proclamations; CBP Dec. 26-14; USITC HTS release list, all read October 10, 2026

Compliance Radar, live in the GingerLite app, checks each new Presidential Proclamation, Executive Order, Federal Register notice and HTS USITC archive update against your own HTS codes and emails what to redo by the effective date; it does not read CBP's CSMS messages, so keep that subscription for operational notices. For the news alone, the free Policy Briefings send one email when a U.S. trade rule changes. Free tariff schedule tools and historic rate data are compared in our free tariff calculators comparison.

How does each duty estimation system compare, one by one?

Compared one by one, the systems split by price model and fit: GingerOS is quoted per project and fitted to your process, Flexport and Gaia Dynamics offer self-serve access, Zonos publishes per-order and monthly prices, Oracle GTM is listed by company revenue in Oracle's cloud price list, and the others are quote-based. Each is described from its own pages, read October 10, 2026, without repeating the quotes in the tables above.

GingerControl (GingerOS)

What it is. GingerOS is the AI trade compliance platform that runs on your process, for import- and export-heavy manufacturers and multi-entity groups. It watches new rules and changes in your ERP, PLM and supplier records; checks every SKU against a new rule and lists the ones it hits; shows each affected part's new duty and next step; asks for missing product facts before it suggests an HTS code and records the reasoning for your approval; rechecks export control, FTA eligibility and origin documents; and writes approved results back to your ERP with an audit trail. BOM upload links each part to what it goes into and what it is made from.

Price. GingerOS is quoted per project, after the Prototype Week. The GingerLite app, with the Tariff Calculator and the Classification Researcher, is $150 a month for 300 credits, with top-ups if you run out.

How it fits your systems. Connections are set up per client, read-only and staged, with no master data migration and no pre-built connectors; GingerOS is the system of record for classification decisions, and ERP fields are downstream caches. Customer data never trains our models, runs in the customer's own dedicated environment and is encrypted in transit and at rest. A project typically takes 8 to 16 weeks from first call to go-live, and the first two of its five phases come before any contract. Where your own systems need codes and duty by call, the Classification + Tariff Calculation API, for enterprise customers after a call, returns a 10-digit HTS code and its U.S. duty layers as JSON, 120 items per call by default. More on the IT page and the compliance page.

Where its use case ends. Duty calculation covers U.S. imports only; classification covers the U.S., Canada and, in beta, the EU. It does not do denied-party screening, file entries, compute AD/CVD, calculate VAT or run checkout DDP. If your entities also pay import VAT or GST, our guide to classification software vs VAT software for multi-entity manufacturers splits the two jobs and names who calculates the VAT.

Flexport Tariff Simulator (incl. Pro)

What it is. Flexport's U.S. import duty estimator: search by product name or 10-digit HTS code, with rates kept back to January 1, 2025 ^[1]. Tariff Simulator Pro, unlocked by a Flexport Client App login, adds bulk HTS uploads, PGA requirements and fees, side-by-side country comparison and email alerts when a duty change affects one of your codes ^[23]. Its published worked examples include the July 23 and July 24, 2026 cutover.

Price. The core tool is free. On October 10, 2026 the live tool's meter showed 5 free searches before sign-up, while Flexport's marketing page says up to 10 HTS codes without an account; Pro has no public price ^[23].

Where its use case ends. The free tool runs one calculation at a time; its FAQ lists watches, clocks, GRI 1 sets, GSP claims, some Chapter 98 and 99 programs and FTZ as not supported ^[1], and its public API reference lists no tariff or duty calculation endpoint ^[28]. Flexport's whole tool suite is mapped, and its calculator set line by line against ours, in our Flexport tariff tool alternative guide; whether its "simulator" is a different kind of tool from a calculator is answered in tariff simulator vs tariff calculator.

Descartes (CustomsInfo, classification and duty)

What it is. AI-assisted HTS classification on Descartes' own duty and tariff data, with "access to over 6 million regulatory sources" on its duty data page ^[26]. CustomsInfo, its trade content product, adds HTS search, a landed cost calculator and collaboration tools, and lists Oracle GTM and SAP GTS under its solutions ^[27]. Descartes also lists denied party screening among its solutions ^[26].

Compare trade compliance automation approaches by whether they automate research, workflow controls, filing or a custom data process.

Price. Quote-based.

Where its use case ends. It is built as the content and classification layer that feeds an ERP or GTM suite, so how your own parts are rechecked when a supplier changes depends on the system it feeds. Head to head: Descartes vs GingerControl.

Thomson Reuters ONESOURCE Global Trade

What it is. An enterprise trade management suite whose Global Trade Analysis page claims part-level landed costs, landed-cost scenarios and future rates ^[20]. ONESOURCE Global Classification AI launched on October 20, 2025 ^[13].

Price. Quote-based.

Where its use case ends. Its 95% classification figure is a stated target, not an audited rate ^[13]. This is the suite we compare head-on, on classification with the reasoning on record and on rechecks when parts change, while conceding its global content and screening: ONESOURCE vs GingerControl.

e2open (WiseTech Global)

What it is. A global trade and supply chain network, owned by WiseTech Global since August 3, 2025. Beyond the Global Knowledge content and trade-lane duty simulation quoted above, it advertises "Automated Landed Cost Calculation" and tariff data in over 20 languages ^[24].

Price. Quote-based.

Where its use case ends. It is a platform decision for companies that standardize global trade on one network and want the broadest content coverage stated on this list; a team that needs per-part U.S. duty estimates and rechecks is buying a different kind of system. Compared in e2open vs GingerControl.

Gaia Dynamics

What it is. An AI trade compliance platform founded in 2024 that calls itself "the AI operating system for global trade"; it announced a $7M seed round led by Corazon Capital on September 16, 2026. Beyond the tariff features quoted above, Tariff Audits read your ACE report, and its Platform API offers "classification suggestions, estimated tariffs, audits, and more" ^[2].

Price. A free plan (30 credits a year, 100 products); Starter from $99 a month, Pro from $379 and Advanced from $1,399, each billed yearly; Enterprise custom; unlimited users; a 14-day free trial ^[2].

Where its use case ends. Plans are sized by products and credits for teams that start without a sales call and run the tool themselves; a system fitted to your own ERP and approval flow is a different kind of project. Compared in Gaia Dynamics vs GingerControl.

SAP GTS

What it is. SAP Global Trade Services, inside SAP: classification, customs management, export controls and preference. Its sanctioned party screening covers "sales, finance, HR, procurement, and distribution", and a failed check blocks the transaction ^[18].

Price. Quote-based; its product page shows no price.

Where its use case ends. It fits SAP-standardized groups; entities on a second ERP sit outside it, and duty currency follows the rates you load. Compared in SAP GTS vs GingerControl.

Oracle GTM

What it is. Oracle Global Trade Management. Its product page lists tariff management, trade compliance with restricted party screening and classification, customs management and trade agreements, and its documentation describes the Landed Cost Simulator quoted above ^[19].

Price. Oracle's cloud price list sets Global Trade Management Cloud Service by company revenue; its product page shows no other price.

Where its use case ends. It fits Oracle-stack enterprises that want landed cost per sourcing option inside Oracle; the duty number comes from the external engine you connect.

Zonos

What it is. A cross-border e-commerce landed-cost platform: guaranteed duties and taxes at checkout, where Zonos pays the difference if customs charges more than it quoted, and Zonos Classify, which processes "up to 50,000 items per hour" and returns codes of 6 to 14 digits ^[14].

Price. Guaranteed landed cost: US$2 plus 10% of duties, taxes and fees per order. Classify from US$500 a month (Standard, starting price), with 1,000 free classifications ^[14].

Where its use case ends. It is built around the checkout and the parcel; a manufacturer's entries through its own brokers are a different flow. More in Zonos vs Avalara vs GingerControl.

Avalara Cross-Border

What it is. Avalara AvaTax Cross-Border "calculates and estimates customs duties and import taxes in real time", and Avalara Cross-Border Estimated estimates them at checkout when you have no HS code. Avalara is owned by Vista Equity Partners ^[16].

Price. Quote-based; the only price on its Cross-Border page is for sales tax.

Where its use case ends. It fits companies already running AvaTax, and it is built for the transaction-tax workflow rather than a manufacturer's broker entries. For what to use instead on U.S. import duty, see the Avalara Cross-Border API alternative guide.

Also on analyst shortlists: SimplyDuty

SimplyDuty, from ParcelWorks Limited in the UK, is a duty calculator rather than a company-wide system: £0.10 per API call, or £9.99 a month for 100 calls up to £499.99 for 5,000, for "hundreds of destinations"; on October 10, 2026 its U.S. tariff update banner still linked to a page last updated in 2025 ^[32]. It scores 2.9 overall on our sheet. Compared in SimplyDuty vs GingerControl.

By the numbers

• $216.7 billion: total duty, taxes and fees CBP collected in fiscal year 2025 ^[33].
• 60 economies: under the forced-labor Section 301 from July 24, 2026, 17 at 10%, 38 at 12.5% and five topped up to a combined cap ^[6].
• 25%: Section 232 on covered automobile parts, in effect since May 3, 2025 on CBP's own effective-date table ^{[33] [3]}.
• $31.06 billion: Section 122 duty CBP assessed in fiscal year 2026 through July 5, 2026, on a layer that ended for entries after July 23, 2026 ^[33].
• $21.56 billion: China Section 301 duty assessed in fiscal year 2026 through July 5, 2026 ^[33].
• 21: revisions of the 2026 Harmonized Tariff Schedule by October 9, 2026, when Revision 21 took effect ^[31].

Which system fits which job at a multi-entity manufacturer?

The right system depends on the job: GingerOS for consistent codes, U.S. duty estimates that match what brokers file and rechecks, and an enterprise suite or content provider for screening, filing and global content.

The tiered call:

1. If your codes differ across entities, your estimates miss what brokers file, or changes need rechecks across 10,000+ SKUs: GingerOS.
2. If you need screening, filing and global content across the business: SAP GTS or Oracle GTM when every entity runs on that ERP, ONESOURCE or e2open across ERPs, and Descartes for tariff content and denied party screening.
3. If you need a quick free U.S. estimate, a self-serve plan today or duty at checkout: Flexport, Gaia Dynamics, or Zonos and Avalara.

For the whole trade compliance software market (screening, export controls, filing), see our trade compliance software buyer's guide.

Putting one approved code per part into every entity's duty estimate

When plant estimates and broker entries disagree, start with the code each entity uses. GingerOS writes each approved code back to your ERP with an audit trail and sends it to every broker, and it starts with Prototype Week: a clickable prototype of your own flow in three days. See how GingerOS keeps one code per part across your entities. To see first where your entities, brokers and records disagree, the compliance audit is a 30-minute review that shows what to fix first.

References

1. Flexport, Tariff Simulator FAQ (read October 10, 2026)
   Data cited: MFN plus Section 301, Section 232 and safeguards by entry date and date of loading; AD/CVD flagged, not calculated; MPF and HMF outside the duty rate; one calculation at a time; country comparison by recalculating; FTAs applied with the SPI; unsupported categories (watches, clocks, GRI 1 sets, GSP claims, FTZ, some Chapter 98 and 99 programs); 190+ origin countries; history to January 1, 2025; "24-48 hours" update wording
   Published: undated page, read October 10, 2026
2. Gaia Dynamics, tariffs, pricing, free trial, Tariff Audits and Platform API pages, and its seed-round release of September 16, 2026 (read October 10, 2026)
   Data cited: Sections 201, 232 and 301; officially announced and rumored tariffs; date-of-arrival and tariff type scenarios; catalog tariff scan; Tariff Audits on ACE reports; Platform API; plans (Free with 30 credits a year and 100 products, Starter from $99, Pro from $379, Advanced from $1,399 a month billed yearly, Enterprise custom, unlimited users, 14-day trial); founded 2024, $7M seed led by Corazon Capital, 48 countries
   Published: September 16, 2026 (release); other pages undated, read October 10, 2026
3. Federal Register, Proclamation 10908, Adjusting Imports of Automobiles and Automobile Parts Into the United States
   Data cited: 25% on automobiles from April 3, 2025 and on automobile parts no later than May 3, 2025 (heading 9903.94.05); 15% all-in for automobile parts of the EU (9903.94.45), Japan (9903.94.55) and Korea (9903.94.65) with a base rate under 15%, per the U.S.-EU (90 FR 46136), U.S.-Japan (90 FR 44638) and U.S.-Korea (90 FR 55964) implementing notices and 2026 HTS Revision 21
   Source: Proclamation 10908
   Published: April 3, 2025 (in force on October 10, 2026, per CBP's effective-date table and HTS Revision 21)
4. Federal Register, Proclamation 11021, Strengthening Actions Taken To Adjust Imports of Aluminum, Steel, and Copper Into the United States
   Data cited: Section 232 duty on the full customs value from April 6, 2026; 50% Annex I-A tier
   Source: Proclamation 11021
   Published: April 9, 2026
5. U.S. Customs and Border Protection, CSMS #68253075, Section 232 metal content guidance
   Data cited: goods outside Chapters 72, 73, 74 and 76 with under 15% of the applicable metal by weight not subject to the duties; melt-and-pour and smelt-and-cast reporting continues
   Source: CSMS #68253075
   Published: April 3, 2026
6. Federal Register, USTR, Notice of Actions in Section 301 Investigations of Acts, Policies, and Practices of Various Economies (forced labor), 91 FR 47318
   Data cited: 60 economies; 10% on 17 economies, 12.5% on 38, combined 10% or 12.5% caps for the EU, Taiwan, Japan, Korea and Switzerland; entries from July 24, 2026, with the in-transit rule for goods entered before July 28, 2026
   Source: 91 FR 47318
   Published: July 28, 2026
7. U.S. Customs and Border Protection, CSMS #69326983, forced-labor Section 301 guidance
   Data cited: headings 9903.05.29 (Canada), 9903.05.31 (China) and 9903.05.55 (Mexico); 9903.05.90 exemption for Section 232 articles, including parts of passenger vehicles, light trucks and medium- and heavy-duty vehicles; 9903.05.93 and 9903.05.94 exemptions for USMCA goods of Canada and Mexico entered free
   Source: CSMS #69326983
   Published: July 23, 2026
8. Federal Register, Proclamation 11056, Temporary Suspension of Additional Duties To Offset Canadian Discrimination Against the Commerce of the United States With Respect to Alcoholic Beverages, Dairy, and Motor Vehicles (Section 338), with CBP CSMS #69606660 and HTS U.S. note 51 to subchapter III of Chapter 99
   Data cited: the 50% duties of Proclamations 11046, 11047 and 11048 start at 12:01 a.m. eastern time on August 22, 2026; they apply to products of Canada listed under headings 9903.03.12 to 9903.03.14 (cheeses, alcoholic beverages, dairy products and a long list of other goods), not only to drinks, dairy and vehicles
   Source: Proclamation 11056; CSMS #69606660
   Published: August 24, 2026 (CSMS sent August 21, 2026)
9. Federal Register, CBP Dec. 26-14, Customs User Fees To Be Adjusted for Inflation in Fiscal Year 2027
   Data cited: MPF 0.3464% unchanged; minimum $34.58 and maximum $670.86 from October 1, 2026
   Source: CBP Dec. 26-14
   Published: July 31, 2026
10. Electronic Code of Federal Regulations, 19 CFR 24.24, Harbor maintenance fee
    Data cited: 0.125% of the value of commercial cargo loaded on or unloaded from a commercial vessel
    Source: 19 CFR 24.24
    Published: current text, read October 10, 2026
11. Federal Register, Proclamation 11012, Imposing a Temporary Import Surcharge (Section 122)
    Data cited: 10% surcharge on goods entered from February 24, 2026 through 12:01 a.m. eastern daylight time on July 24, 2026
    Source: Proclamation 11012
    Published: February 25, 2026
12. GingerControl, Jet Import Brokers case study
    Data cited: several well-known tariff tools gave wrong or incomplete rates (conditional exemptions missing, watches returned error codes); at least one to two days per client at each policy update before, about 30 minutes for every product of every client after
    Source: Jet Import Brokers case study
    Published: October 9, 2026
13. Thomson Reuters, ONESOURCE Global Classification AI product page and press release of October 20, 2025 (read October 10, 2026)
    Data cited: "95% target accuracy" (product page); launched within the existing Global Classification solution on October 20, 2025 (press release)
    Published: read October 10, 2026
14. Zonos, Classify docs, Classify product page, Classify pricing page, Landed Cost page, and landed cost pricing and getting-started docs (read October 10, 2026)
    Data cited: "over 90% accuracy out of the box"; "Under 1% of declarations get reclassified, a 99%+ accuracy rate", with accuracy defined as the broker landing on the same HS code used at checkout; "up to 50,000 items per hour"; 6 to 14 digit codes; Classify Standard US$500 a month starting price; 1,000 free classifications; US$2 plus 10% of duties, taxes and fees per order; 217 countries and territories; "constantly refreshed data"
    Published: undated pages, read October 10, 2026
15. GingerControl, internal classification test of 1,000+ products (Quick classifier)
    Data cited: 99.86% at the 10-digit level on GingerControl's own internal test, not an independent audit; the How we test page explains the method and publishes no results
    Source: How we test
    Published: cleared for publication October 10, 2026
16. Avalara, AvaTax Cross-Border and Tariff Code Classification pages (read October 10, 2026), and Vista Equity Partners' release on completing its acquisition of Avalara
    Data cited: duties and import taxes "in real time"; Cross-Border Estimated when you have no HS code; "more than 180 countries based on regularly updated customs data"; no accuracy percentage ("highly accurate"); no public Cross-Border price (the page's only price is for sales tax); owned by Vista Equity Partners
    Published: undated pages, read October 10, 2026; Vista release October 19, 2022
17. U.S. Customs and Border Protection, CROSS rulings N348886, N351340, N351604 and N359756
    Data cited: 8507.90.8000 ("Parts: Other", battery parts other than lead-acid) for a die-cast aluminum EV battery housing (N348886), shells for lithium-ion cells (N351340), an aluminum support element inside an EV battery (N351604) and a steel enclosure for a rail battery pack (N359756); the rulings state the code, not the legal path, which is our reading of GRI 1 and HTS Section XVI Note 2(b) and Section XVII Note 2(f)
    Source: CBP ruling N348886; CBP ruling N359756
    Published: May 29, 2025 (N348886); August 5 and 11, 2025 (N351340, N351604); March 27, 2026 (N359756)
18. SAP, Global Trade Services product page and SAP GTS 11.0 help, "Maintaining Customs Duty Rates" (read October 10, 2026)
    Data cited: sanctioned party list screening across "sales, finance, HR, procurement, and distribution", with a failed check blocking the transaction; tariff classification, import and export management, embargo and license checks, free-trade agreement management; in Customs Management, duty rates entered "in the system manually or upload[ed] with XML"; no price on the product page
    Published: undated pages, read October 10, 2026
19. Oracle, Global Trade Management product page and Landed Cost Simulator documentation (read October 10, 2026)
    Data cited: tariff management, trade compliance (restricted party screening, classification), customs management, trade agreements; "multiple sourcing scenarios"; duty from "an external tax engine"; landed cost for each sourcing option; no public price
    Published: documentation PDF dated December 1, 2025, read October 10, 2026
20. Thomson Reuters, ONESOURCE Global Trade Analysis page (read October 10, 2026)
    Data cited: part-level landed cost; multiple estimated landed cost scenarios; future rates and rules of origin; "220 tariff schedules, 750 Denied Party lists, and 500 FTA rules of origin"; no public price
    Published: undated page, read October 10, 2026
21. U.S. Customs and Border Protection, Reconciliation overview
    Data cited: Reconciliation lets importers flag estimated elements on an entry summary (value, 9802, certain classification issues, FTA eligibility) and provide the actual information later; entries are reconciled under 19 U.S.C. 1484(b); used here only as the program's definition
    Source: CBP Reconciliation
    Published: last modified June 1, 2023 (read October 10, 2026)
22. GingerControl, Tariff Calculator, production run of October 6, 2026
    Data cited: HTS 6402.99.9005, $25,000, ocean, loaded October 1 and entered October 6, 2026; China base rate 20% ($5,000), 9903.88.15 at 7.5% ($1,875), 9903.05.31 at 12.5% ($3,125), MPF $86.60, HMF $31.25; Mexico USMCA special rate panel with the total at the general rate, 9903.05.55 at 10% ($2,500) under potential duties; one HTS code across 200+ origins
    Source: GingerControl Tariff Calculator
    Published: run October 6, 2026
23. Flexport, Tariff Simulator page on flexport.com and the live tool's homepage (read October 10, 2026)
    Data cited: up to 10 HTS codes without an account (marketing page); "0 / 5 free searches" meter (live tool); Tariff Simulator Pro with a Flexport Client App login: bulk HTS uploads, PGA requirements and fees, side-by-side country comparison, email alerts when a duty change affects one of your codes; no published Pro price
    Published: read October 10, 2026
24. e2open, Global Trade, Import Management and Global Knowledge pages, and WiseTech Global's notice of the completed acquisition (read October 10, 2026)
    Data cited: 230+ countries and territories, maintained daily by in-house trade experts; duty impact simulation by trade lane; automated landed cost; 240 FTAs, more than 900 restricted party lists, tariff data in over 20 languages; acquisition completed August 3, 2025
    Published: August 3, 2025 (WiseTech notice); e2open pages undated, read October 10, 2026
25. U.S. International Trade Commission, HTS heading 9903.88.15
    Data cited: China Section 301 List 4A, 7.5% (Lists 1 to 3 at 25% under 9903.88.01 to .03)
    Source: USITC HTS 9903.88.15
    Published: read October 10, 2026
26. Descartes, Product Classification and Duty Determination and Duty and Tariff Data pages (read October 10, 2026)
    Data cited: "AI-assisted HTS classification software"; database "from 175+ countries"; "access to over 6 million regulatory sources" (Duty and Tariff Data page); Denied Party Screening listed among its solutions
    Published: undated pages, read October 10, 2026
27. Descartes CustomsInfo, homepage (read October 10, 2026)
    Data cited: "190+ countries", HTS code search, landed cost calculator, collaboration tools; Oracle GTM and SAP GTS listed under Solutions
    Published: read October 10, 2026
28. Flexport, Tariff Simulator changelog, API reference, Tariff Simulator page and Simplify Customs page (read October 10, 2026)
    Data cited: last changelog update September 22, 2026; update speed stated as "24-48 hours" (FAQ), "1-2 days" (changelog), "48 hours" (Tariff Simulator page) and "rates updated daily" (Simplify Customs page); no tariff or duty calculation endpoint in the public API reference
    Published: read October 10, 2026
29. U.S. Customs and Border Protection, CSMS #67834313
    Data cited: IEEPA duties no longer collected on goods entered on or after 12:00 a.m. eastern time on February 24, 2026; Section 232 and 301 unaffected
    Source: CSMS #67834313
    Published: February 22, 2026
30. Federal Register, USTR, Notice of Action: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment
    Data cited: 25% on products of Brazil, heading 9903.05.01, from July 22, 2026
    Source: USTR Brazil notice
    Published: July 20, 2026
31. U.S. International Trade Commission, HTS release list
    Data cited: 2026 HTS Revision 21, current, release start October 9, 2026
    Source: USITC HTS release list
    Published: read October 10, 2026
32. SimplyDuty, pricing, import calculator and 2025 U.S. tariff pages (read October 10, 2026)
    Data cited: owned by ParcelWorks Limited; £0.10 per API call; £9.99 (100 calls) to £499.99 (5,000 calls) a month; "hundreds of destinations"; U.S. update page last updated May 29, 2025
    Published: read October 10, 2026
33. U.S. Customs and Border Protection, Trade Statistics
    Data cited: $216,711,007,541 total duty, taxes and fees in fiscal year 2025; Section 122 $31.06 billion and China Section 301 $21.56 billion assessed in fiscal year 2026 as of July 5, 2026; Section 232 effective-date table (automobile parts May 3, 2025)
    Source: CBP Trade Statistics
    Published: page last modified October 2, 2026