How to Calculate Landed Cost: The Complete Guide for Ecommerce Sellers
Most sellers know they pay duties. Few actually know how much — or that they're probably calculating it wrong. Here's the full formula, a real $5,000 example, and all the fees that quietly eat your margin before you even notice.
In this guide
What Is Landed Cost? (And Why You're Probably Getting It Wrong)
Landed cost is the total cost of getting a product from your supplier to your warehouse — cleared customs, fully delivered, ready to sell. It's the number you need for margin calculations, pricing decisions, and supplier comparisons. Not the invoice price. Not the invoice price plus a guess.
But most sellers price from the invoice. One person put it plainly in r/AmazonFBA:
"I've been managing this manually with spreadsheets — taking retail price, subtracting Amazon's cut, then layering in duty, freight, and packaging... it always feels like I'm guessing."
That's most importers. And the guessing is expensive. When you don't know your real landed cost:
- You set prices too low to be profitable
- You pick suppliers on invoice price when a higher-invoice supplier might actually cost less landed
- One customs bill wipes your margin on an entire shipment
- You can't tell if a product is worth selling at all
The fix is simple once you know the formula.
The Complete Landed Cost Formula
Same core formula every time:
The part everyone gets wrong: duty is not calculated on your product cost alone. CBP uses the CIF value as the dutiable base — that means your freight and insurance get included before duty is applied. Ship a $5,000 order with $600 freight and duty applies to $5,655, not $5,000.
CBP's main valuation method is the transaction value — what you actually paid for the goods, adjusted to include freight and insurance if they're not already in the price. That's 19 U.S.C. § 1401a.
⚠ The #1 mistake: Calculating duty on your FOB price instead of your CIF value. If your freight is $800 on a $5,000 order, you're under-counting your dutiable value by 16%. On a 15% duty rate, that's over $100 in unexpected charges per shipment.
Step-by-Step Example: $5,000 Order from China
You're importing 500 units of a silicone kitchen accessory set from a factory in Guangzhou. HTS code lands you in consumer goods — Section 301 List 4A rate of 7.5%, plus the current 10% Section 122 baseline.
Step 1: Establish the FOB Price
Your supplier quotes $5,000 FOB Guangzhou. That price gets your goods to the origin port and loaded. Everything after — freight, insurance, destination charges — is on you.
Step 2: Calculate the CIF Value
| Component | Amount | Notes |
|---|---|---|
| FOB price | $5,000.00 | Supplier invoice |
| Ocean freight | $600.00 | LCL from Guangzhou to Los Angeles |
| Marine insurance | $55.00 | ~1.1% of shipment value (typical rate) |
| CIF Value | $5,655.00 | Dutiable value |
Step 3: Calculate Import Duty
| Tariff Layer | Rate | Amount |
|---|---|---|
| MFN (Most Favored Nation) base rate | 0% | $0.00 |
| Section 301 List 4A (consumer goods from China) | 7.5% | $424.13 |
| Section 122 baseline tariff | 10% | $565.50 |
| Total duty on CIF value | 17.5% | $989.63 |
Step 4: Add All Other Import Costs
| Cost Item | Amount | Notes |
|---|---|---|
| Import duty (from Step 3) | $989.63 | Based on CIF × 17.5% |
| Merchandise Processing Fee (MPF) | $27.23 | 0.3464% of CIF, min $27.23, max $528.33 |
| Harbor Maintenance Fee (HMF) | $2.83 | 0.125% of CIF (ocean freight only) |
| Customs broker fee | $150.00 | Standard ISF + entry filing fee |
| Port terminal handling (THC/DRAY) | $175.00 | Destination port charges |
| Inland freight (Los Angeles → warehouse) | $280.00 | Drayage + FTL/LTL to fulfillment center |
| Total additional costs | $1,624.69 |
Step 5: Your True Landed Cost
| Line Item | Amount |
|---|---|
| FOB product cost | $5,000.00 |
| Ocean freight | $600.00 |
| Marine insurance | $55.00 |
| Duties + taxes + fees | $1,624.69 |
| Total Landed Cost | $7,279.69 |
| Cost per unit (500 units) | $14.56 |
| vs. FOB cost per unit | $10.00 |
$14.56 per unit. That's 45.6% higher than your $10 FOB cost. If you were pricing off the invoice with a rough markup, you were costing this product completely wrong.
Skip the spreadsheet math
Our free duty calculator does this instantly — just enter your FOB price, origin country, and HTS code. No signup required.
Try the Duty Calculator →FOB vs CIF vs DDP — Which Incoterm Are You Using?
Your Incoterm determines where the supplier's job ends and yours begins. Get this wrong and your entire landed cost calc is off.
| Incoterm | What's Included | Your Risk Starts | Best For |
|---|---|---|---|
| FOB Free On Board |
Supplier delivers goods to origin port, loaded on vessel | Once goods are on the ship | Experienced importers who arrange their own freight |
| CIF Cost, Insurance & Freight |
Supplier pays freight + insurance to destination port | Once goods arrive at destination port | Buyers who want supplier to arrange shipping |
| DDP Delivered Duty Paid |
Supplier handles everything — freight, customs, duty, delivery | When goods arrive at your door | First-time importers or when supplier offers competitive all-in pricing |
FOB (standard for experienced importers)
FOB is the baseline for landed cost calculations. $5,000 FOB Guangzhou means $5,000 gets your goods loaded on a ship — from that point, freight, insurance, customs, and delivery are your problem. Everything in the example above applies to an FOB buyer.
CIF (the one people misread most)
CIF quotes already include freight and insurance to the destination port. That means your CIF invoice price is your dutiable value — CBP uses it directly. You can't back out the freight to lower your duty calculation. A lot of sellers try this. It's wrong. Duty applies to the full CIF price, freight and all.
DDP (simple, but usually pricier)
DDP is one number, everything included, product arrives duty-paid at your door. Great for simplicity. But suppliers mark up their freight handling and duty on DDP quotes, and you lose visibility into the actual cost breakdown. For any significant volume, you're almost always better off arranging your own freight and customs and getting a clear line-item breakdown.
💡 Tip: For Amazon FBA, most experienced sellers use FOB with a freight forwarder who delivers directly to an Amazon fulfillment center. The freight forwarder handles customs, you pay duty directly, and you get a clear cost breakdown for accounting purposes.
The Hidden Costs Most Sellers Forget
Everyone budgets for duty. These are the ones that tend to get missed:
Merchandise Processing Fee (MPF)
0.3464% of CIF value on formal entries (shipments over $2,500). Minimum $27.23, maximum $528.33. It's a small line item on a $5,000 shipment, but it hits every single entry.
Harbor Maintenance Fee (HMF)
0.125% of CIF on ocean freight arriving at US ports. Air freight is exempt. On a $5,655 CIF value that's $7.07 — not large, but consistently missing from cost models.
ISF Filing Fee (10+2)
You're required to file an Importer Security Filing at least 24 hours before cargo loads at the foreign port. Your broker charges $25–$50 per shipment. Late or missing ISFs carry CBP penalties up to $10,000. Not optional.
Customs Entry Filing
Your broker charges $75–$175 to prepare and file your customs entry (CBP Form 7501). Some brokers bundle ISF + entry filing into one flat fee. Ask.
Container Examination / Exam Fees
CBP can pull any container for examination — X-ray, intensive, or tailgate. If yours gets selected, you pay the exam fees: $200 to $1,000+ depending on exam type. It happens to roughly 3–7% of containers, so build it into your margin assumptions even though it's unpredictable.
Destination Terminal Handling (THC / DRAY)
Moving your container off the ship and through the destination port. Varies by port. Typically $100–$300+ per LCL shipment.
Inland Freight
Port to your warehouse or FBA fulfillment center. For FBA sellers, this usually means drayage plus a trucking leg to an Amazon FC. $150–$400 per LCL shipment for the LA-to-inland run is a common range.
Product Testing and Compliance
Toys, electronics, food-contact items — anything regulated needs third-party testing certs. Usually $200–$1,500 per product, one-time. Amortize these into your first production run's landed cost.
De Minimis: What Changed in 2026
For most of the past decade, any US-bound shipment valued under $800 entered duty-free. No customs entry, no broker, no tariff. That was the de minimis rule.
It's gone now.
Executive Order 14324, signed February 1, 2025 and expanded through 2025–2026, suspended duty-free de minimis for shipments from all countries. Every international package now owes duty regardless of value.
⚠ If your model ran on direct-from-China under $800: That's over. Every shipment, any value, is now dutiable. The math changed.
Who this hits hardest:
- Dropshippers on AliExpress or Shein shipping individual orders direct
- Direct-from-factory models where Chinese manufacturers ship B2C orders
- Test orders and samples — even a 5-unit sample order under $800 now owes duty
Traditional FBA and Shopify sellers importing full shipments are less affected — you were already running landed cost calculations on container loads. But if you were using de minimis as a cost buffer, that buffer is gone.
Source: Federal Register: Executive Order 14324; Tax Foundation Tariff Analysis, March 2026.
What a Realistic Effective Rate Looks Like in 2026
The Tax Foundation calculated the US weighted-average applied tariff rate at 10.2% — the highest since the early 1970s. That's across all imports, all countries, all products.
For China specifically it's much higher. Most consumer goods face a minimum 17.5%, industrial goods can hit 35%+, and steel and aluminum can reach 85%.
A 1% margin miscalculation was survivable when duty was 2–3%. At 17–35%, getting this wrong kills products — and sometimes businesses. Know your actual landed cost before you price anything.
Frequently Asked Questions
Sources
- Tax Foundation: 2026 Trump Tariffs & Trade War by the Numbers — US weighted-average tariff rate 10.2% (March 2026)
- US Customs and Border Protection: Importing Commercial Goods
- 19 U.S.C. § 1401a — Customs Valuation (Transaction Value)
- Federal Register: Executive Order 14324 — De Minimis suspension
- US International Trade Commission: Harmonized Tariff Schedule
- ICC: Incoterms 2020 Rules
Calculate your exact landed cost in seconds
Enter your FOB price, origin country, and HTS code. Get the full breakdown — duty, MPF, HMF, and total landed cost. Free, no account needed.
Open the Duty Calculator →Disclaimer: This article is for informational purposes only and does not constitute legal, tax, or customs advice. Tariff rates and import regulations change frequently. Always verify current rates with US Customs and Border Protection or a licensed customs broker before making import decisions. Rates in this article are accurate as of March 24, 2026.