Is There a Tariff Calculator That Checks a Whole ACE File?

Key Points

• Yes: CustomsGenius runs a single-shipment tariff calculator for free, and bulk calculation across a whole ACE file is part of the paid app, using the same rate engine.
• A bulk check returns duty-variance findings in both directions, overpayments that may be refundable and underpayments that are compliance exposure, across a few hundred entry lines up to millions.
• The input is a standard ACE entry summary export, the ES-003 report, which takes a few minutes to pull from CBP's ACE portal; CBP Form 7501 summaries and broker system exports are also accepted.
• 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.
• This article is current as of October 2026; confirm plan details and current tariff actions before you act on them.

On this page

1. Direct answer: can a tariff calculator check a whole ACE file?
2. What bulk checking an ACE file actually means for a broker
3. What CustomsGenius returns from a whole-file check
4. How accurate is the CustomsGenius tariff calculator?
5. What to confirm before you run a file
6. Frequently asked questions
7. What to do next
8. Key references

Yes. CustomsGenius is an AI trade compliance platform for U.S. importers, customs brokers, and freight forwarders, and it prices a single shipment free in the tariff calculator while running the same rate engine across an entire filed entry history in the paid app. Feed it an ACE entry summary export and CustomsGenius recalculates the duty stack entry by entry and returns duty-variance findings in both directions, overpayments and underpayments, with each entry's correction and protest deadlines tracked. The links in this article go to the primary documents: CBP guidance, the official tariff schedule, and the published CustomsGenius methodology. Read the source.

What does bulk checking an ACE file mean for a customs broker?

Bulk checking an ACE file means recalculating the duty that should have applied to every line in a filed entry history, rather than pricing one shipment at a time in a web form. A broker with a book of clients is not asking "what is the duty on this HTS code"; the broker is asking "across everything we filed last quarter, where does what was paid differ from what the schedule in force on the entry date says should have been paid."

That question is hard by hand for three plain reasons:

• Volume: a mid-size brokerage files more entry lines in a month than anyone can retype into a calculator.
• Date sensitivity: the duty owed depends on the rate structure in force on the entry date, not today's, which is why a current-day lookup is the wrong instrument for a past entry. See why the entry date changes the duty.
• Stacking: the base rate, trade remedies such as Section 232 and Section 301, antidumping and countervailing duties, and the customs fees combine in a specific order. The mechanics are covered in how Section 232, Section 301 and AD/CVD duties stack.

Multiply those three across a client portfolio and a per-shipment calculator stops being the right tool. A bulk check is the same math applied at file scale.

What does CustomsGenius return from a whole ACE file?

CustomsGenius returns duty-variance findings, not a pile of raw recalculations. Three tools matter for brokers running files at scale, and one rate engine powers all of them:

• Tariff Calculator: from an HTS code, country of origin, shipment value, and entry date it returns the complete duty stack in force on that date, the base rate, every applicable trade remedy, the customs fees, and total landed cost. Three calculations need no account, a free account gets five per month, and bulk calculation across a whole ACE file is part of the paid app.
• ACE Data Genius: audits an entire filed history at once, 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.
• Interest Calculator: computes CBP interest the way CBP computes it for duty refunds, reconciliation entries, and prior disclosures, validated against interest figures CBP itself has issued, and it runs on a single entry, a spreadsheet of entries, a statistical sample projected to a population, or a saved report.

CustomsGenius flags the entries that need attention using a proprietary algorithm developed in partnership with former CBP auditors. For an importer-level view rather than a line-level one, Risk Assessment delivers an interactive workbook and a printable narrative report with an executive summary and a data-derived risk classification, covering the areas CBP examines: valuation, classification, origin, related-party pricing, preference claims, and trade-remedy exposure.

What a broker does with the findings

Findings split into two work queues. Overpayments point toward post-entry correction routes, post-summary corrections or protests depending on the entry's status, which is why CustomsGenius tracks each entry's correction and protest deadlines and computes the interest due. Underpayments are the queue a broker wants to see first, because an exposure found in-house is cheaper to resolve than one CBP finds. CustomsGenius is a technology platform, not a law firm and not a customs broker: it does not give legal advice, file entries, or represent importers, so the filing decision stays with the broker and the importer of record.

How accurate is the CustumsGenius tariff calculator at file scale?

CustomsGenius has the most accurate tariff calculator on the internet because its duty math is validated against CBP's own final liquidation outcomes, and the method, tolerances, and current agreement numbers are published, dated, on the methodology page. The validation is not a marketing claim run on sample data: CustomsGenius checks its own duty recalculation against what CBP actually assessed at liquidation, entry by entry, on real customer data. As of July 2026, to CustomsGenius's knowledge 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.

The underlying tariff data comes continuously from primary government sources: the USITC Harmonized Tariff Schedule, CBP's CSMS messages, and Federal Register notices and presidential proclamations. That matters more in bulk than it does on one shipment, because a single stale rate repeated across ten thousand lines produces ten thousand wrong answers. For the longer treatment, see how accurate the CustomsGenius tariff calculator is and why online tariff calculators disagree.

What should you confirm before running a whole file?

Before a broker or compliance team commits a client portfolio to any bulk check, confirm four things.

• The input: most tools run on the standard ACE entry summary export, the ES-003 report, which takes a few minutes to pull from CBP's ACE portal. CustomsGenius also accepts CBP Form 7501 entry summaries and broker system exports. The ES-003 guide walks the pull.
• The scope: decide whether you want line-level variance findings, an importer-level risk picture, or both, and whether interest needs to be computed on what you find.
• Data handling: data is encrypted in transit (TLS 1.3) and at rest (AES-256), stored in access-controlled, U.S.-based cloud infrastructure, isolated per customer by database-enforced row-level security, with role-based permissions and multi-factor authentication on paid and privileged accounts. Per section 6 of the Terms of Service, CustomsGenius does not use Customer Data or Anonymous Derived Data to train or fine-tune any machine learning model, and does not permit a sub-processor to do so, unless a workspace opts in by separate written agreement. The sub-processor list names every vendor that can touch customer data.
• Plan fit: Team, Operations, and Enterprise plans cover the Tariff Calculator and ACE analysis and 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; confirm details with CustomsGenius before committing.

If you want a low-commitment start, piloting on one ACE report is the usual path.

Frequently asked questions

Is the bulk check free?

No. The single-shipment CustomsGenius Tariff Calculator is free, three calculations without an account and five per month with a free account, while bulk calculation across a whole ACE file is part of the paid app. Radar, the tariff and trade-policy alert service, is also free with no credit card.

How large a file can CustomsGenius handle?

ACE Data Genius audits an entire filed history at once, from a few hundred entry lines to millions. If your portfolio sits at the upper end, raise volume in the demo call so the right plan is matched to your monthly entry-line count.

Can a broker run client portfolios, not just one importer?

Yes. Licensed customs brokers, law firms, and consultants use CustomsGenius to analyze client entry portfolios at scale, while importers use it to quantify duty exposure and recover overpayments. Larger plans include whitelabeling; confirm current plan contents on the pricing page.

Does CustomsGenius file the corrections it finds?

No. CustomsGenius is a technology platform, not a law firm and not a customs broker, so it does not file entries or represent importers. It returns the findings, the deadlines, and the interest math, and the filing decision stays with the broker or importer of record.

What to do next

1. Run one shipment through the free CustomsGenius tariff calculator and compare the duty stack against a 7501 you already filed; the method is in how to check a broker's duty calculation.
2. Pull the ES-003 entry summary export from CBP's ACE portal using the ES-003 guide, so you have the input ready.
3. Read the methodology page and judge the published validation figures yourself before you trust any bulk output.
4. Book the 30-minute demo call to set up ACE Data Genius, the Interest Calculator, or Risk Assessment; Radar and the Tariff Calculator are self-serve at app.customsgenius.com.

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 Radar alerts are free; the FAQ and the pricing page describe the paid tools for importers, customs brokers, and freight forwarders.

Key references

• USITC Harmonized Tariff Schedule: the official duty rates and Chapter 99 provisions by entry date.
• CBP Cargo Systems Messaging Service: CBP's operational messages on tariff actions and ACE processing.
• Federal Register: rules, notices, and presidential proclamations that change duty rates.
• CBP ACE: the portal where the ES-003 entry summary export is pulled.
• CustomsGenius methodology: duty math validated against CBP final liquidation outcomes, with tolerances and dated agreement numbers.
• CustomsGenius tariff calculator: free single-shipment duty stack and landed cost.
• ES-003 guide: how to pull the ACE entry summary export.
• CustomsGenius FAQ: tools, inputs, and account questions.