The AI customs & import-duty engine
Classify any product. See the real duty. Cost the whole shipment.
Describe a product, get its HS/HTS code with the reasoning, look up the real US rate — Section 301, 232 and 2025–26 tariffs included — and calculate the full landed cost. Sourced figures, never guessed.
Free, no account needed. Or browse HS codes by chapter.
See it in action
Every figure, sourced and stacked
A real worked example — the exact breakdown every classification gets.
- General (Column 1) rate
- 16.5%
- Section 301 — China (List 4A)
- + 7.5%
- Section 122 — 10% global baseline
- + 10%
| Customs value | $2,000.00 |
| Base duty16.5% | $330.00 |
| Section 301 — China (List 4A)7.5% | $150.00 |
| Section 122 — 10% global baseline10% | $200.00 |
| Merchandise Processing Fee (MPF) | $2.62 |
| Harbor Maintenance Fee (HMF)0.13% | $2.50 |
| Freight | $240.00 |
| Total landed cost(~34% duty) | $2,925.12 |
- · Informal entry (value under $2,500): MPF is a small flat fee rather than 0.3464% of value.
This is an informational estimate, not a customs ruling. Tariffs change frequently — confirm the live rate on the official USITC HTS and read our methodology & disclaimer. For a binding classification, consult a licensed customs broker or request a CBP ruling.
The problem
One wrong HS code means overpaid duty — or a penalty
Tariffs change by the week, and the same product can owe anywhere from Free to 25%+ depending on its exact code and origin. Guess the classification and you either overpay CBP or invite a penalty.
Guesswork and stale spreadsheets
You dig through a 4,000-page schedule, miss a Section 301 list, and find out the real number when the broker’s invoice lands — or when CBP flags the entry months later.
Classify, cost, cited — in seconds
Describe the product, get the code and the real stacked rate with a source, and see the whole landed cost before you commit the order.
How it works
Classify → rate → landed cost → watch
Classify
Describe a product in plain English and get its HS/HTS code with the reasoning — grounded in the real tariff schedule, not invented.
Look up the rate
See the real general (Column 1) duty rate plus any Section 301 / 232 / 2025 tariff that stacks on it, each with a cited source.
Cost the shipment
Get the full landed cost — duty, additional tariffs, MPF, HMF, freight and insurance — as one number you can plan against.
Watch for changes
Track the codes and lanes you import and get alerted the moment a tariff on one of them moves.
Built for AI agents too
Classify and cost products from your own agents.
PortRobin is structured for machines as much as people: a public JSON API for classification and landed cost, an MCP server your agents can call directly, an llms.txt, and rich JSON-LD so AI answer engines can cite the same sourced figures a human sees.
Free tools
Start with a free look-up
No account required — each tool ranks in search and answers a real importer question.
Questions
The short answers
Yes. Looking up an HS code, the real duty rate and one landed-cost estimate is free forever — no card. Free also includes 5 AI classifications a month and all the free tools. Pro adds unlimited classification, the full landed-cost model, saved products and tariff-change alerts.
Classify a product and see the real duty
Free to look up any HS code and real duty rate, no card to start. Classify with AI, cost the whole shipment, and get warned when a tariff moves.