For Shopify merchants shipping into the US
De minimis is gone. Your checkout may be undercharging duties.
Every order entering the US now clears customs against a 10-digit HTS code. If that code is wrong or missing, you eat the difference. DutyLookout classifies your catalog, prices the full duty stack, and watches the tariff schedule so you don’t have to.
14-day free trialNo customer data touchedEvery estimate cites its rate snapshot
| Subheading | Article description | General |
|---|---|---|
| 3926.90.99 | Other articles of plastics, other | 5.3% |
| 4202.92.31 | Travel and sports bags, outer surface of man-made fibers | 17.6% |
| 6505.00.60 | Hats and headgear, knitted, of man-made fibers | 20¢/kg + 7% |
| 9503.00.00 | Toys, scale models and similar recreational articles | Free |
What DutyLookout does
Three jobs. Done properly.
Classification is AI-assisted and always reviewable. Duty math is pure arithmetic against a versioned rate database — no AI anywhere near your numbers. Monitoring runs every day against official sources.
Correct HTS codes for your whole catalog
Every product gets a suggested 10-digit US HTS code with a confidence score and a one-line, plain-English reason. Approve, edit, or bulk-approve — approved codes are written straight to Shopify, where checkout, labels, and carriers pick them up.
Codes validated against the current HTS revision before any write-back.The full duty stack, not a guess
Base MFN rate, Section 301 and 232 surcharges, postal rules, and processing fees — computed per product and origin country from our versioned, internally maintained rate database. Every estimate names the rate snapshot it came from.
No LLM is involved in rate math. Ever.Daily monitoring of official sources
We track the USITC tariff schedule, Federal Register notices, and CBP bulletins daily. When a change touches your catalog, you get one email within 24 hours: old rate → new rate, and exactly which SKUs are affected.
“Your checkout may now be undercharging on these 14 SKUs.”How it works
From install to watched catalog
Install & sync
One-click install from the Shopify App Store. Your catalog syncs automatically — we read products only, never customers or orders.
Catalog classified in minutes
Suggested HTS codes arrive with confidence scores and one-line rationales, so you can see why each code was chosen.
Review & approve
Approve one by one or in bulk; override anything. Approved codes are written back to Shopify’s HS-code field on each product.
Rates watched daily
From then on, DutyLookout stands watch. Rate changes affecting your products trigger an alert with the exact SKUs and deltas.
Where it fits
Built for the merchants in between
Shopify’s built-in duty tools are a reasonable start, and enterprise platforms are excellent at enterprise scale. DutyLookout covers the ground between them: accuracy and transparency at small-merchant prices.
| Shopify’s built-in estimates | Enterprise platforms | DutyLookout | |
|---|---|---|---|
| Classification | Automatic, no reasoning shown; merchants report frequent review needs | Strong, often with broker services attached | AI-suggested with confidence score and rationale; you approve every code |
| Duty math | Officially “an estimate”; rate freshness not visible | Full landed-cost engines | Full US duty stack from a versioned rate database; every estimate cites its snapshot |
| Change alerts | None | Varies by contract | Daily watch with SKU-level email alerts within 24 h |
| Pricing | Included with Shopify | Priced for larger merchants | From $29/mo, 14-day free trial |
| Audit trail | — | Yes | CSV export of every code, rationale, and approval — ready for your customs broker |
Pricing
Small-merchant prices. Flat and predictable.
- Full-catalog classification with rationales
- Per-product US duty estimates
- Daily rate watch & alerts
- Full-catalog classification with rationales
- Per-product US duty estimates
- Daily rate watch & alerts
- Full-catalog classification with rationales
- Per-product US duty estimates
- Daily rate watch & alerts
14-day free trial on every plan. Billed through Shopify — cancel anytime from your Shopify admin.
Try it first
Look up one product, free
Describe a product in plain English and get its HS code with an indicative US duty range — no account, no install. Five lookups a day, on the house.
Stand a watch on your tariffs.
Install DutyLookout, get your catalog classified in minutes, and let the daily rate watch flag what changes — before it costs you margin.
Install on Shopify — 14-day free trial