PROCUREMENT ECONOMICS
Landed Cost Calculation Guide: Formula, Taxes & Freight Economics
By Catalayer Sourcing Intelligence•Updated 2026-10-18•9 min read
A product that costs $4.00 at the factory gate rarely costs $4.00 when it arrives at your warehouse. Underestimating landed costs—by ignoring tariffs, terminal handling fees, customs clearance, and palletizing—destroys e-commerce profit margins. Learn the exact formula to calculate true landed economics.
Key Sourcing Takeaways
- True Landed Cost = Factory Unit Price + In-Country Freight + Ocean/Air Shipping + Customs Duties + Insurance + Port Handling + Last-Mile Delivery.
- Harmonized Tariff Schedule (HTS) codes dictate your baseline import duty; verify codes in the official USITC or TARIC tariff databases.
- Ocean freight involves ancillary fees: Terminal Handling Charges (THC), documentation fees, chassis splits, and customs broker charges.
- Always calculate landed cost per unit across multiple shipping volume tiers (e.g. LCL vs. full 20ft / 40ft container).
Procurement Checklist & Verification Protocol
- Identify the exact 10-digit HTS / HS code for your product.
- Check for Section 301 tariffs or anti-dumping duties applicable to your product category.
- Request an itemized freight forwarder quote including all destination accessorial fees.
- Incorporate a 3% to 5% buffer for customs exams, storage, or currency fluctuations.
| Cost Component | Total Expense (USD) | Per-Unit Cost (USD) | Percentage of Total |
|---|---|---|---|
| Factory Ex-Works (1688/Alibaba) | $4,500.00 | $4.50 | 59.6% |
| Domestic China Trucking to Port | $180.00 | $0.18 | 2.4% |
| Ocean Freight (LCL Consolidation) | $950.00 | $0.95 | 12.6% |
| US Customs Duty (7.5% + 25% Section 301) | $1,462.50 | $1.46 | 19.4% |
| Customs Brokerage & Entry Filing | $150.00 | $0.15 | 2.0% |
| Destination Port Handling & Drayage | $310.00 | $0.31 | 4.0% |
| Total Landed Cost | $7,552.50 | $7.55 | 100.0% |
The Forensic Landed Cost Formula
$\text{Landed Cost per Unit} = \frac{\text{Factory Order} + \text{Freight} + \text{Duties} + \text{Clearance} + \text{Insurance} + \text{Local Drayage}}{\text{Total Salable Units Received}}$
Notice the denominator: "Salable Units Received", not "Units Ordered". If you order 1,000 units but inspection removes 30 defective units, your fixed costs spread across 970 units, slightly elevating real per-unit landed cost.
Frequently Asked Questions
Does DDP (Delivered Duty Paid) simplify landed cost calculations?
Yes. Under DDP terms, the forwarder quotes one inclusive price per kilogram or cubic meter covering all shipping, customs, and delivery. However, DDP typically includes a 15% convenience markup compared to managing FOB shipments yourself.