Wrong HS codes cost you at the border.
Since the US ended de minimis, every parcel needs a proper HS code. Shopify uses your codes to estimate duties at checkout, and you pay the difference when the estimate is off. HS Duty Check finds the gaps and helps you close them.
Scan in minutes. No setup.
Install the app and it sorts every product into one of four groups.
Missing HS code
These products ship with no classification at all.
Generic code, no US detail
US duty rates live at the 8-digit level. A 6-digit code is where under-collection hides.
Code no longer in the HTS
The US tariff schedule is revised several times a year. Old codes stop being valid.
Valid 10-digit code
Good to go. We keep watching for HTS revisions that affect it.
Then fix them, on your terms.
Get a cited suggestion
Each product gets a 10-digit US HTS code, quoted word for word from the official schedule so you can check it.
Review and approve
Nothing is written to Shopify until you approve it. Approve one by one, in bulk, or by group.
Keep a full history
See every change: old code, new code, who approved it and when. Restore any previous code in one click.
Reconcile real duties
Upload your carrier or Shopify duty bills as CSV and see, order by order, where what you collected differs from what you paid.
Stay current
When an HTS revision changes or removes a code you use, the app tells you.
Be one of the first stores on it.
HS Duty Check is in private testing ahead of its Shopify App Store launch. Tell us about your store and we'll get you in early.
HS Duty Check suggests classifications to help you; it is not a licensed customs broker, and you remain responsible for the codes you declare.