HS code validation + EU small parcel duty audit + bulk customs document generation. Verify the €3 flat duty per EU regulation, compare against platform billing, recover overcharges, and export declaration-ready evidence.
Enter your product lines, compare EU regulation vs platform billing in real time
演示口径：欧盟指引「同一税号归类 + 品名（如适用原产地）的一条申报行只收 1×€3，数量不翻倍」； Shopify 行项目计费为社区实测口径（社区帖）。本计算器为展示用，不构成税务建议，实际以欧盟官方指引为准。
Regulation has been live for 2+ months — merchants are already debating this in the community
Platform charges per product line: 2 items with same HS code = €6, but EU law says merge to 1 line = €3.
Many orders showed €0 duty on launch day. After fixes, still billed per line instead of merged per EU regulation.
Nov 1, 2026: Product Identifiers become mandatory. Compliance requirements keep tightening — manual checking is getting harder.
Recent discussions from the official Shopify Community
Priced by order volume — your ROI = orders × recovered overcharges per order
Product is in development. Join now and be first to get access (free tier available)
Enter your store domain to start. Free tier includes product HS mapping
安装后即可免费体验：订单关税审计 + 单证导出（每月 20 单/5 份）；商品 HS 映射为付费功能。 正式版上架 App Store 前为直装链接。
Per EU official guidance, €3 is charged per 'declaration line': same HS code + product description (and country of origin where applicable) merge into one line, charged 1×€3 — quantity doesn't double it. Official example: 3 women's suits of different fabrics all under 6104 19 = just €3.
Platform billing is per product line — same HS = €6. We calculate per EU regulation and compare line-by-line, showing you the difference and the basis for each charge. It helps you optimize duty costs.
No — it's complementary. Managed Markets handles collection and declaration infrastructure. We focus on compliance audit and cost optimization. Even sellers not on Managed Markets can use us for customs documents and audit.
Packages under €150 use the flat €3 per item rate. Shipments over €150 go through standard ad valorem duty declaration — that's on our roadmap.
Enter your store domain (yourstore.myshopify.com) and click install — follow the authorization prompts. Free tier: 20 order scans + 5 documents/month. Paid plans unlock 200 orders + product HS mapping + unlimited documents. Direct install link before App Store listing.
Scan 20 EU orders under €150/month, generate a duty audit report (regulated vs platform estimate, risk flags), and export 5 customs documents — enough to verify the value. Upgrade to Basic $19/month for more scans and saved HS mappings.
EU customs commercial invoice (IOSS format, printable as PDF), declaration checklist (CSV, grouped by order). Customizable templates: seller name, IOSS number, sender address. All built-in with HS code disclaimer.
Order data is stored in your own MongoDB (Vercel + MongoDB Atlas). All keys are in environment variables. Pages have anti-copy protection. Access control is enforced on the backend.