IOSS and the New €3 EU Customs Duty: Two Charges, One Spreadsheet

IOSS became familiar because it simplified VAT collection on low-value imports into the EU. Customs duty was a separate layer, often invisible on many sub-€150 consumer parcels because threshold-based duty relief applied until 30 June 2026. From 1 July, that relief disappears for the policy scope covered by Council Regulation (EU) 2026/382, and a temporary €3 customs duty per item applies on qualifying low-value consignments until 1 July 2028, before normal tariff rates expand under the Customs Data Hub transition.

In spreadsheet terms, create distinct columns: product CNY, declared EUR intrinsic value, VAT method (IOSS eligible or not), estimated duty lines post-July, freight, insurance, carrier fees. Never merge VAT and duty into one “tax guess” cell—you cannot optimize what you do not separate.

Official FAQ material stresses IOSS compliance does not immunize sellers from customs debt when duty applies. Agent buyers should assume duty may appear at delivery or through carrier disbursement even when VAT looked “prepaid” on a marketplace receipt. Your landed-cost total must include both layers where relevant.

Member-state implementations may phrase notices differently—Ireland’s Revenue published consumer-facing guidance in 2026 explaining €3 duty per distinct product type and that duty enters the VAT calculation base—but the structural separation remains: duty is not VAT.

For haul planning, rerun every open EU row this week. If duty lines push totals past your comfort threshold, revisit item mix: fewer tariff categories per parcel, higher-intention items only, or deferred purchases. Link to declared value primer for consistency checks.

Community posts often claim “IOSS covers everything under €150.” That was never legally precise and is actively misleading after July. Correct your personal notes and help your spreadsheet template reflect 2026 law, not 2021 forum memory.

Separating IOSS VAT from customs duty makes LitBuy EU math auditable—and prevents surprise delivery charges that feel like agent errors but are policy changes.