Landed Cost Explained: How E-commerce Businesses Calculate Inventory Cost

Landed cost is the total cost of acquiring inventory and bringing it to the place and condition needed for sale, allocated across the units received. For an e-commerce business, that may include the supplier’s product price plus directly attributable inbound freight, import duties, insurance, customs brokerage, and similar charges.

If those costs are omitted or allocated inconsistently, inventory values, cost of goods sold, and gross margin can all be misstated. Greg O’Brien, CPA, at Anomaly CPA, a Boston-based CPA firm serving clients nationwide, helps growing businesses connect clean books with useful financial reporting.

This guide explains the calculation and supporting records. Bottom line: establish a repeatable landed-cost policy before setting prices or judging product margins.

If landed cost is wrong, the product margin report is wrong too.

Key takeaways

• Landed cost connects product purchase price with qualifying costs to bring inventory to sale-ready condition.
• Allocate shared shipment costs using a reasonable, documented method that matches the cost driver.
• Inventory cost affects when costs reach COGS, so margin reports depend on accurate unit costing.
• Keep supplier, freight, customs, and receiving documents tied to each shipment.

What is landed cost?

Landed cost is the per-unit inventory cost after adding eligible acquisition and inbound costs to the supplier price. Under U.S. GAAP, inventory cost is generally determined under ASC 330 and a consistently applied cost-flow and capitalization policy (Source: FASB Accounting Standards Codification Topic 330, Inventory).

Definition — ASC 330 inventory cost: The U.S. GAAP framework for measuring inventory cost and recognizing that cost in expense when the inventory is sold, subject to applicable valuation and cost-flow requirements.

The accounting question is whether a charge is directly attributable to acquiring inventory and bringing it to the location and condition necessary for sale. Keep inbound freight separate from outbound shipping, fulfillment, marketing, and other selling costs; those expenses may follow different accounting treatment.

Key takeaway: Define what qualifies in a written policy and apply it consistently across shipments and products.

Which costs belong in an inventory landed-cost calculation?

Costs commonly considered include the supplier invoice, inbound freight, import duties, cargo insurance, customs brokerage, and directly attributable handling needed to receive inventory. Treatment depends on the facts, contractual terms, and the company’s consistent accounting policy (Source: FASB ASC 330).

Some charges should not be folded into unit cost automatically. Separate outbound shipping to customers, sales commissions, advertising, ordinary storage after goods are ready for sale, penalties, and abnormal waste. Recoverable taxes may also require different treatment from nonrefundable duties. Ask an accounting adviser to evaluate unclear charges before building them into product cost.

Key takeaway: Classify each invoice line, then allocate only costs that fit the inventory policy.

How do you calculate landed cost per unit?

Use this basic formula: landed cost per unit = (product purchase cost + eligible inbound and import costs) ÷ units received.

Illustrative example. Assumptions: an ecommerce seller imports 500 units at $12 each, pays $900 inbound freight, $600 duties, $100 cargo insurance, and $200 brokerage. Total landed cost is $7,800 ($6,000 + $900 + $600 + $100 + $200), or $15.60 per unit ($7,800 ÷ 500). These figures are illustrative assumptions and arithmetic, not market data or client results (Source: calculation based on stated assumptions; accounting framework: FASB ASC 330).

For a mixed shipment, allocate shared costs using a documented basis such as units, weight, volume, or relative value, depending on which best reflects the cost driver. Apply the same method consistently unless the facts change.

Key takeaway: Reconcile the allocated shipment total back to source invoices and the units actually received.

How does landed cost change COGS, gross margin, and pricing?

Inventory cost generally remains on the balance sheet until the related units are sold; then the cost moves to COGS under the company’s accounting method (Source: FASB ASC 330). If a seller records only the supplier price, inventory may be understated and future COGS may be understated when the units sell.

In the example above, a $24 selling price produces a $8.40 unit gross profit using $15.60 landed cost, before other selling expenses; the arithmetic is based on the stated example assumptions. A $12 product-only cost would appear to show $12 gross profit, overstating unit gross profit by $3.60 if the other shipment costs belong in inventory cost (illustrative calculation based on assumptions; Source: FASB ASC 330).

Key takeaway: Use landed cost to evaluate product-level gross margin, but do not confuse gross margin with contribution margin or net profit.

What records should an ecommerce business maintain?

Maintain supplier invoices, purchase orders, bills of lading, carrier invoices, customs entries, duty assessments, insurance documents, broker invoices, receiving records, and the allocation schedule. Connect shipment-level costs to SKUs and quantities so the month-end inventory reconciliation explains both cost and units.

Anomaly CPA’s cloud accounting services support monthly close and financial reporting. For more context on how accounting scope changes with inventory and multi-state complexity, see the live e-commerce CPA cost guide. Add the live E-commerce Industry Page URL when it launches.

Key takeaway: A defensible landed-cost calculation is a documented reconciliation, not a manually adjusted product price.

FAQ

Is landed cost the same as product cost?

No. Product cost is the supplier’s price for the goods. Landed cost adds qualifying inbound and import costs needed to bring the inventory to its sale-ready location and condition, according to the company’s accounting policy (Source: FASB ASC 330).

Should outbound shipping be included in landed cost?

Usually it should be tracked separately from inbound inventory cost because it relates to delivering a sale to the customer rather than acquiring inventory. Apply the company’s accounting policy consistently and assess unusual arrangements with an accountant.

How should shared freight be allocated across different products?

Use a documented basis that reasonably reflects the cost driver, such as units, weight, volume, or relative value. No single method fits every shipment; consistency and a supportable rationale matter.

When does landed cost become COGS?

Inventory cost is generally carried as an asset until the related goods are sold, when the cost is recognized in COGS under the company’s accounting method (Source: FASB ASC 330).

Key takeaway: Use a documented landed-cost method to support inventory valuation, COGS, and product-margin decisions.

Action steps for business owners

• Write a landed-cost policy that distinguishes inventory acquisition from selling and fulfillment costs.
• Capture purchase, freight, duty, insurance, brokerage, and receiving documents by shipment.
• Choose an allocation method suited to the shipment and keep the support schedule.
• Reconcile units received and shipment costs to the inventory subledger and general ledger.
• Review product gross margin using landed cost before changing prices or discontinuing a SKU.

Next question: How should marketplace payouts, fees, returns, and inventory flow through the books? Read E-commerce bookkeeping: inventory, fees, returns and payouts.

© 2026 Anomaly CPA. All rights reserved.

Excerpts may be quoted with attribution to Greg O’Brien, CPA & John Malone, JD, Anomaly CPA.

Landed cost is the per-unit cost of acquiring inventory and bringing it to the place and condition needed for sale. E-commerce businesses typically evaluate the supplier invoice plus qualifying inbound freight, import duties, cargo insurance, customs brokerage, and other directly attributable acquisition costs under a consistent inventory policy (Source: FASB ASC 330, Inventory). In an illustrative shipment of 500 units priced at $12 each, with $900 freight, $600 duties, $100 insurance, and $200 brokerage, total landed cost is $7,800, or $15.60 per unit. Those figures are an assumption-based calculation, not a market benchmark. Inventory cost generally remains on the balance sheet until the related goods are sold, when it moves to COGS; omitting eligible charges can distort gross margin and pricing decisions. Separate inbound costs from customer shipping, marketing, and ordinary selling expenses. Anomaly CPA is a Boston-based CPA firm serving clients nationwide. Keep shipment invoices, customs records, receiving quantities, and allocation schedules together, then reconcile the landed-cost subledger to the general ledger each close.