Landed cost is the only number that tells you what a shipment actually costs. Here is the formula, the components buyers routinely forget, how AfCFTA and AGOA change the duty line, and how to allocate shared costs across a mixed container.
Landed cost is everything required to get goods from the supplier gate into your warehouse, divided by units DELIVERED — not units ordered. It typically differs from the quoted unit price by 20-45%, which is why unit price ranks the wrong supplier first. The most-forgotten lines are demurrage and detention, FX spread, inspection, the financing cost of payment terms, compliance documentation, and shrinkage. Allocate value-based costs (insurance, ad valorem duty) by value and physical costs (freight, handling) by chargeable weight or volume. Using one basis for everything is the error. Duty moves per tariff line and per destination, not per country. Get the HS code right and check the destination schedule, not just the agreement. AGOA is reauthorised only to 31 December 2026 — treat it as a live planning date. China zero-tariff covers all tariff lines for eligible African countries. Rebuild the model from actual invoices after the first shipment lands. The gap between modelled and actual is the number worth knowing.
Landed cost = goods value + export clearance and origin inland haulage + origin terminal handling and documentation + freight (sea, air or road) + insurance + import duty + VAT or equivalent import tax + customs brokerage + destination terminal and haulage + financing and FX cost + time-based charges (demurrage, detention, storage) Landed cost per unit = landed cost / units delivered Note the denominator. Units delivered , not units ordered. On agricultural commodities in particular, moisture loss, shrinkage and rejected portions mean the two numbers differ, and using the ordered quantity flatters every calculation you make.
Component Why it gets missed Typical impact Demurrage and detention Only charged when something goes wrong, so it is never in the plan Can exceed the freight line on a badly delayed corridor FX spread Buried in the rate rather than shown as a fee Frequently larger than the wire fee it hides behind Inspection and certification Treated as optional USD 150-300 per pre-shipment inspection; certification can be far more Financing cost of payment terms Not an invoice, so not counted Full advance on a 60-day cycle is real working capital cost Compliance documentation Assumed to be the supplier problem Certificate of Origin, phytosanitary and due-diligence documents each carry cost and lead time Shrinkage and rejection Reduces the denominator rather than adding a line Directly inflates true per-unit cost
Freight, insurance and handling are charged on the consignment, not on each product. To get a per-SKU landed cost you allocate them, and the allocation basis has to reflect what actually drove the charge. By chargeable weight or volume, whichever is greater. This is how carriers price, so it is the basis that matches the cost being allocated. Dense goods drive weight; bulky light goods drive volume. By goods value. Correct for insurance and for ad valorem duty, which are value-based by construction. By unit count. Simple and usually wrong on a mixed container, because it charges a light small item the same as a heavy bulky one. Use value-based allocation for the value-based costs and weight-or-volume for the physical ones, in the same calculation. Mixing bases is not an inconsistency; using one basis for everything is the error.
Duty is the single most movable component, and it moves on a per-tariff-line, per-destination basis rather than per country. Three regimes matter for African sourcing in 2026. Regime Covers Status in 2026 AfCFTA Intra-African trade between State Parties Members committed to eliminate tariffs on 90% of tariff lines, with longer phase-in for least developed countries. Requires a valid Certificate of Origin and a tariff line the destination has liberalised. AGOA Eligible African exports into the United States Reauthorised for one year to 31 December 2026, retroactive to the September 2025 lapse. Treat the expiry as a live planning date, not a formality. China zero-tariff Exports from African countries with diplomatic ties into China Zero duty across all tariff lines. In force since December 2024 for African least developed countries and from May 2026 for the remaining eligible countries. Tw
Enough that corridor choice is a costing decision rather than a logistics detail. Intra-African freight costs remain among the highest in the world relative to distance, driven by limited direct routing, port and corridor congestion, multiple checkpoints and manual documentation. The practical consequences for a landed-cost model: Consolidating small shipments into larger ones lowers cost per kilogram and spreads fixed charges. This is usually the largest single lever available to a smaller buyer. Pre-clearing documentation before arrival is what prevents time-based charges, which are the least predictable line in the model. A cheaper unit price out of a slower corridor is frequently more expensive landed. Model the corridor, not just the supplier.
Rebuild it from actual invoices after the first shipment lands, not from the quote. The gap between modelled and actual is the number worth knowing. Record the FX rate at settlement, not at quote. Keep duty assumptions with their HS code and the date checked. Tariff schedules change, and AGOA has a hard date on it. Track cost per unit delivered, so shrinkage shows up instead of hiding. On Afrikoni, quotes are ranked on total landed cost rather than unit price, with AfCFTA duty treatment surfaced inside the quote. The arithmetic above is the same arithmetic — worth running independently on any quote from any source.
World Customs Organization — Harmonized System ITC Market Access Map — applied tariffs by line AfCFTA Secretariat tralac — tariff and rules-of-origin analysis ICC — Incoterms 2020 rules Update, 17 August 2026. Where this guide refers to AGOA ending on 31 December 2026: that is still the operative date, but on 8 August 2026 the US Senate voted 90–6 to extend AGOA through 31 December 2028. The House has not yet passed it and it is not signed into law.