Customs duties + import VAT — the landed-cost picture

Landed cost is the price the buyer ends up paying after the parcel clears customs. For cross-border B2C shipments the gap between the cart total and the landed cost is usually duties plus import VAT plus a customs broker fee — and the buyer is the one who finds out, often at delivery, with a customs invoice the size of the original order.

Three numbers that change the landed cost

Duty rate at the destination. Every country charges duty based on the Harmonized System (HS) six-digit code of the product, extended to 8-10 digits at the national level. The EU uses the Combined Nomenclature (CN); the US uses the Harmonized Tariff Schedule (HTSUS); the UK uses the Online Tariff. Rates range from 0% (most electronics into the EU) to 17% (textiles, footwear) to 32%+ (some agricultural products). A bad HS code means a wrong rate — either over-paying duty you don't owe, or under-paying and triggering a CBP/HMRC/AEAT audit.

Import VAT or sales tax. Above the de-minimis threshold, the destination charges import VAT on (item value + shipping + duty). EU rates run 17-27% depending on member state. UK is 20% above £135, with VAT collected at point of sale below. US has no federal import VAT; state sales tax applies if the seller has nexus. The IOSS scheme (Import One-Stop Shop) lets non-EU sellers collect EU VAT at checkout for consignments ≤€150 — when used, the parcel clears customs without a broker fee or buyer-facing invoice.

De-minimis threshold. Below the threshold, no duty applies, and (depending on country) no VAT either. US: $800. EU: €150 for IOSS-registered sellers, otherwise duty waived below €150 but import VAT still due. UK: £135 — below this VAT is collected at sale, above this duty and import VAT clear at customs. Knowing the threshold lets you split orders strategically (legally — splitting one order into two to evade duty is fraud).

Why HS code matters more than people think

Classification disputes are the most common customs problem for small sellers. CBP's HSTUS has 17,000+ codes; the EU CN has 9,500+; the UK Online Tariff inherits the EU's. Slight misclassification (e.g., 6209.20.10 vs 6209.20.30 for cotton baby garments) can swing duty from 11.8% to 0%. The classification you declare is what the carrier puts on the customs declaration; customs reviews it on a random sample basis and assesses penalties for "negligent" misclassification ($100-$10,000+ per violation in the US).

The hs-code.shipcostlab.com tool walks product descriptions through the WCO HS nomenclature down to the six-digit level. The duty.shipcostlab.com tool extends to the national 8-10 digit code and pulls the current duty rate plus import VAT for EU / US / UK. The ioss.shipcostlab.com tool decides between IOSS, OSS, and standard import VAT for your seller-establishment + buyer-location combination.

A paid PDF defends the classification

Free tools give you the answer. The €29 PDF for the HS code finder includes: the WCO HS section / chapter notes that justify each classification, the most common misclassification disputes with case outcomes (CBP rulings, EU BTI rulings, UK ATR rulings), how to file a binding ruling request before shipping to lock in the rate, and supplier-letter templates that move the classification risk to the manufacturer when you can. For high-volume sellers shipping multiple HS codes monthly, the audit-defense value covers the cost in one disputed shipment.

Freight class, dim weight, and what carriers really charge for

Carriers don't bill by what the box weighs. They bill by whichever is greater between actual weight (a scale measurement) and dimensional weight (a volume measurement). The dimensional formula varies by carrier, by mode (air vs ground vs ocean), and by route — and the difference between "actual" and "dim" pricing is often 2-5x for low-density goods like packing peanuts, lampshades, or pillows.

Dimensional weight by carrier

The DIM divisor turns box volume into a billable weight. Lower divisor = higher dim weight = more billing weight. Carrier-specific (2026 published values):

• DHL Express international: 5000 cm³/kg (IATA standard for air)
• FedEx Express international: 5000 cm³/kg
• FedEx Ground domestic US: 6000 cm³/kg
• UPS Worldwide Express: 5000 cm³/kg
• UPS Ground: 6000 cm³/kg
• USPS Priority Mail (zones 5-9, packages >1 cubic ft): 166 (in cubic inches / lb)
• Aramex Express: 6000 cm³/kg
• National posts (Royal Mail, Correos, Deutsche Post): varies; some don't apply dim weight below ~30 kg

For a 30×30×30 cm box weighing 2 kg actual, the dim weight at DIM 5000 is (27,000 / 5000) = 5.4 kg. The carrier bills the 5.4 kg. Sellers shipping low-density goods almost always optimize packaging to bring actual weight closer to dim — or accept the dim premium when the product can't be compressed.

Freight class — US LTL only

For Less-Than-Truckload (LTL) freight in the US, NMFC freight class drives the base rate. The 18 classes range from 50 (densest, like steel bars at 50+ lb/ft³) to 500 (lightest, like ping pong balls). Higher class = higher rate. The class is determined by density (lb per cubic foot), stowability (does it stack?), handling (fragile? hazmat?), and liability (high theft risk? high value?).

Density alone covers most cases:

• ≥50 lb/ft³ → class 50 (steel, scrap metal)
• 35-50 → class 55
• 30-35 → class 60
• 22.5-30 → class 65 (boxed furniture, motors)
• 15-22.5 → class 70 (auto parts)
• 13.5-15 → class 77.5 (caulking)
• 12-13.5 → class 85 (machinery parts)
• ... down to ...
• ≤1 lb/ft³ → class 500 (ping pong balls, foam)

The nmfc.shipcostlab.com tool walks the density formula plus the NMFTA item code lookup. Misclassifying a shipment can result in a reweigh and reclassification by the carrier at the dock, plus a +20-100% rate adjustment. The €29 PDF includes the NMFTA density formula nuances (averaging shipping unit vs item-level density) and how to challenge a reclassification.

LCL vs FCL — ocean freight crossover

For ocean freight the question is volume vs cost. Less-than-Container-Load (LCL) is billed per CBM (cubic meter) at the consolidation rate; Full-Container-Load (FCL) is billed flat per container regardless of fill. The crossover where FCL becomes cheaper than LCL sits between 10 and 15 CBM for most routes, depending on origin-destination rate spread and current spot vs contract pricing.

A 20-foot container holds ~33 CBM; a 40-foot holds ~67 CBM; a 40-foot high-cube (40HC) holds ~76 CBM. The lcl-fcl.shipcostlab.com tool walks the crossover calculation using Drewry WCI rates plus Freightos benchmarks, and factors in LCL's consolidation delay (5-10 days extra) plus demurrage / detention risk on full containers held at the destination port.

Dim weight optimization is real margin

For sellers shipping 1000+ parcels monthly at small sizes, every 100g of dim weight saved through better packaging compounds. A flat-pack hat shipper saved ~$0.40 per parcel by switching from 25×25×8 cm boxes to 35×30×3 cm flat mailers — same product, lower dim weight, $400/month in savings. The €19 packaging optimization PDF includes the box-size table by product category and the carrier-specific oversize surcharge thresholds (>120 cm any dimension typically triggers a +$30-100 surcharge).

Choosing the right Incoterm — risk transfer + cost split

Incoterms 2020, published by the International Chamber of Commerce, is eleven terms that split four responsibilities between seller and buyer: freight cost, freight risk, export customs clearance, and import customs clearance. The term you choose changes who pays what, who insures what, and who handles the customs paperwork. Wrong choice and the buyer is stuck with a surprise customs bill, or the seller eats the freight cost they didn't budget for.

The eleven terms in 2020

Any mode of transport (7 terms):

• EXW Ex Works — buyer picks up at seller's door. Seller does nothing else.
• FCA Free Carrier — seller delivers to a named carrier or place. Export clearance: seller.
• CPT Carriage Paid To — seller pays freight to named destination. Risk transfers at first carrier.
• CIP Carriage and Insurance Paid To — CPT + seller pays insurance (ICC A all-risks under 2020).
• DAP Delivered At Place — seller delivers ready for import, buyer handles import customs.
• DPU Delivered at Place Unloaded — DAP + seller unloads at destination.
• DDP Delivered Duty Paid — seller pays everything including import duty and VAT. Maximum seller obligation.

Sea and inland waterway only (4 terms):

• FAS Free Alongside Ship — buyer takes risk once cargo is alongside the vessel.
• FOB Free On Board — buyer takes risk once cargo is on the vessel.
• CFR Cost and Freight — seller pays freight, buyer takes risk at port of shipment.
• CIF Cost Insurance Freight — CFR + seller pays minimum cargo insurance (ICC C).

Which to choose for cross-border e-commerce

For B2C shipments under $1000-€1000 the practical choice is between DDP and DAP:

• DDP: seller pays freight + duty + import VAT. Buyer pays the cart price and nothing more. Buyer experience is clean — package arrives like a domestic order. Seller's risk: HS classification error becomes the seller's penalty.
• DAP: seller pays freight only. Buyer pays duty + VAT + (often) a customs broker handling fee at delivery. Buyer experience is hostile — surprise customs invoice on the doorstep, often 20-30% of the cart total. Buyer's risk: refusing the package leaves the seller liable for return shipping + duty.

The majority of cross-border e-commerce sellers settle on DDP for buyer-friendliness. The DDP-incompatible cases are: shipments above the duty-free threshold to jurisdictions where DDP-incoming requires the seller to register for VAT locally (some EU member states for high-value B2C), and shipments to addresses where the seller's chosen carrier doesn't support DDP service (smaller national couriers in some markets).

For B2B shipments the choice opens up. CIP and CPT are common — seller pays freight and insurance, buyer pays import duties (which the buyer can recover via VAT input credit). FOB is common in sea freight where the buyer arranges their own carrier from the port. EXW is rare except where the buyer specifically wants to control the entire move (own freight forwarder relationship).

What goes wrong without explicit Incoterm

When the sales contract doesn't specify an Incoterm, the default is usually buyer assumes everything from seller's door (functionally EXW). Marketplace platforms typically default to DDP or DAP depending on the marketplace. Etsy uses DDP for orders under threshold (collected via Etsy Payments) and DAP above. eBay's Global Shipping Program handles the duty / VAT collection on behalf of the seller. Shopify Markets Pro acts as merchant of record and handles DDP. Custom checkouts on Shopify / WooCommerce default to DAP unless the seller integrates a duty calculator like Avalara, Zonos, or a build-it-yourself based on this calculator.

The incoterms.shipcostlab.com tool walks the eleven terms with a "who pays what" matrix per term. The €29 PDF includes the ICC Publication 723E commentary on each term, the most common contract-language pitfalls (e.g., "FOB delivery" — which port, when title transfers, whether marine insurance is implicit), and the marketplace-specific defaults so you know what your customers actually see at checkout.