What Is Landed Cost? Formula, Examples, and Where Tariffs Fit In

Your supplier invoice says each unit costs $8. You price it at $16, count on a 50 percent margin, and move on. Then the freight bill arrives. Then the customs broker's invoice. Then a duty charge that's higher than last quarter's. By the time that product reaches your shelf, it cost a lot more than $8, and your margin shrank without anyone noticing.

If that sounds familiar, you're in good company. Most growing product businesses track what they pay suppliers because that number is easy to find. Everything that happens after the purchase shows up on separate bills from carriers, brokers, and government agencies, often weeks apart, so it rarely gets tied back to the products it belongs to.

This guide will show you what landed cost is, the formula to calculate it, a step-by-step example, and where tariffs belong in your books so your margins match reality.

What Is Landed Cost?

Landed cost is the total cost to get a product from your supplier into your warehouse, ready to sell. It includes the purchase price plus freight, insurance, customs duties and tariffs, broker fees, and any other charges you pay before the item is available to customers.

Think of the supplier price as the starting line and landed cost as the full price of the trip. Your landed cost per unit is your true product cost, so it's the number your pricing, margins, and inventory turnover calculations should rest on.

Landed cost matters for any business that buys inventory, but it matters most if you import, buy from several suppliers with different shipping terms, or sell across eCommerce and wholesale channels with tight margins. A small change in freight or duty rates can swing your profit per unit more than you'd expect.

What's Included in Landed Cost?

Landed cost includes every cost you pay to acquire a product and bring it into your possession. The exact mix depends on where you buy and how your goods travel, but most importers will see some version of these components:

• Product cost: The price on your supplier's invoice, minus any trade discounts.

• Freight: Ocean, air, truck, or rail charges to move goods from your supplier to you, including fuel surcharges.

• Insurance: Cargo coverage that protects the shipment while it's in transit.

• Customs duties and tariffs: Taxes the government charges on imported goods, based on what the product is and where it was made.

• Customs and port fees: Government processing fees, port charges, and terminal handling.

• Broker and forwarder fees: What you pay a customs broker or freight forwarder to clear and coordinate your shipment.

• Inbound handling: Drayage, unloading, and delivery from the port to your warehouse.

Some businesses also include payment processing or currency conversion fees tied to paying overseas suppliers. Whatever you include, stay consistent so you can compare one shipment to the next fairly.

It helps to know what stays out, too. Shipping orders to your customers and marketing costs are selling expenses, so they don't belong in landed cost.

The Landed Cost Formula

The landed cost formula adds up every acquisition cost for a shipment, then divides the total by the number of units in it. That gives you a landed cost per unit you can price from.

Landed cost = Product cost + Freight + Insurance + Duties and tariffs + Fees + Inbound handling

Landed cost per unit = Total landed cost ÷ Number of units

The math is simple. The hard part is collecting every cost, because each one usually arrives on a different bill, from a different company, on a different day. A container can reach your dock weeks before the final broker invoice or freight adjustment shows up. That's why many businesses record an estimated landed cost when goods arrive, then update it once the actual bills come in.

How to Calculate Landed Cost: A Step-by-Step Example

To calculate landed cost, list every cost tied to a shipment, add them together, and divide by the number of units. Here's how that works if you import 1,000 insulated water bottles at $8 each.

Your true cost per bottle is $10.60, which is 32.5 percent more than the supplier price. If you sell each bottle for $16, your real gross margin is about 34 percent, well short of the 50 percent you'd expect from the invoice alone. That gap is the difference between pricing with confidence and wondering where your profit went.

The duty rate in this example is for illustration only. Your actual rate will depend on how your product is classified and where it was made.

How to Allocate Landed Cost Across Multiple Products

Most shipments carry more than one product, so you'll need a fair way to split shared costs like freight, insurance, and fees across every item in the container. These are the most common allocation methods:

• By quantity: Every unit carries an equal share. This works when products are similar in size and value.

• By weight or volume: Heavier or bulkier items carry more of the cost. This fits freight, which is usually priced by space or weight.

• By value: Higher-priced items carry a larger share. This often fits insurance, which is usually priced on the value of the goods.

Duties work differently. Each product has its own duty rate, so duties should be assigned item by item instead of spread across the shipment. If you spread a 25 percent duty across products that carry a 5 percent rate, some items will look more profitable than they are, and your pricing decisions will follow those numbers.

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Where Do Tariffs Fit in Landed Cost?

Tariffs are part of landed cost. A tariff, also called a customs duty, is a tax you pay to bring imported goods into the country, so it belongs in the cost of those goods just like freight does. In the U.S., your duty rate depends on how the product is classified in the Harmonized Tariff Schedule (HTS), where it was made, and any trade programs that apply.

Getting classification right is harder than it sounds. According to U.S. Customs and Border Protection (CBP), the importer doesn't get the final word on a product's duty rate; CBP does, and businesses that need certainty can request a binding ruling before they ship. You can look up approximate rates in the Harmonized Tariff Schedule from the U.S. International Trade Commission, but a customs broker is your best ally for confirming classification.

Why Tariffs Belong in Your Inventory Cost

When a tariff bill arrives, it's tempting to book it as an expense and move on. Under standard inventory accounting, though, duties and inbound freight are part of what it costs to acquire your goods. Federal tax rules define the cost of purchased merchandise as the invoice price plus transportation and other necessary charges to acquire the goods, which is why businesses typically add duties to inventory value instead of expensing them right away.

Timing is why this matters. When tariffs sit in inventory, they move to cost of goods sold (COGS) as each product sells, so every sale carries its true cost. When tariffs go straight to an expense account, your margins look worse in the month you import and better in the months you sell, and neither picture is accurate. Your accountant can confirm the right approach for your business, especially if you're large enough that additional capitalization rules apply.

What a Tariff Change Does to Your Landed Cost

Tariff rates can change quickly, and every change flows straight into landed cost. Go back to the water bottle example and imagine the duty rate climbs from 10 percent to 25 percent on your next order. Your duty bill jumps from $800 to $2,000, total landed cost rises to $11,800, and your cost per bottle becomes $11.80.

At the same $16 price, your gross margin falls from about 34 percent to about 26 percent, even though nothing about the product changed. If your system still shows the old cost, you might not see that drop until it hits your financial statements months later. Tracking landed cost on every shipment gives you an early warning, so you can adjust prices, renegotiate with suppliers, or rethink where you source.

Common Landed Cost Mistakes That Shrink Margins

Most landed cost errors start with process gaps, especially when costs live in spreadsheets and on separate bills. These are the mistakes that show up most often when businesses move their inventory data into a new ERP system:

• Booking freight and duties as expenses: Inventory ends up undervalued, and gross margin swings from month to month.

• Counting costs twice: If a supplier ships under Delivered Duty Paid (DDP) terms, freight and duty are already built into the invoice price. Adding them again inflates your cost.

• Spreading duties evenly: Different products carry different duty rates, so a blanket split misprices items.

• Never truing up estimates: If you record estimated freight at receipt and never update it when the final bill arrives, your inventory value drifts away from what you actually paid.

• Using one allocation method for everything: Splitting freight by quantity when a shipment mixes small accessories with bulky items will overcost the small stuff.

Each of these problems compounds over time. A few cents of error per unit, repeated across thousands of units and dozens of stock-keeping units (SKUs), can add up to real money and lead you to discount products that are already less profitable than they look.

How an ERP System Tracks Landed Cost Automatically

An ERP system tracks landed cost by tying every freight, duty, and fee charge to the purchase receipt it belongs to, then allocating those charges across the items in the shipment. Item costs update as charges post, so your inventory value and margins reflect what you actually paid.

Spreadsheets can handle a few shipments a year. Once you're importing regularly from multiple suppliers, or you've started to outgrow basic accounting software, manual tracking gets hard to keep accurate.

In Acumatica, landed cost charges can be recorded against purchase receipts and allocated to items using rules like quantity or weight. If the final bill differs from your estimate, the difference can post to a dedicated variance account, so you'll see exactly where estimates missed. Reports that connect purchase orders, receipts, landed cost charges, and supplier bills will give your team a clean audit trail without chasing paperwork. If you're still exploring platforms, this overview of Acumatica ERP software covers its core functionality, and our roundup of the top distribution ERP software shows how other systems approach inventory.

Setup is where most of the value is won or lost. Deciding which suppliers bill landed costs separately, which ship under DDP terms, and which allocation rule fits each cost type takes some upfront thinking. At Stellar One, we work through those decisions with members during deployment so landed cost is accurate from the first shipment. You can see how one wholesale business scaled its distribution operations with Acumatica.

Protect Your Margins With Accurate Landed Cost

If you've ever looked at a healthy margin on paper and wondered why your bank balance didn't agree, you're asking exactly the right question. Your supplier price is only part of what your products cost, and everything between the factory and your warehouse belongs in the number you price from. With freight rates and tariffs shifting from one quarter to the next, a product cost that was right in the spring can be several points off by fall, and every order you price from it carries that error forward.

A smart next step is learning how inventory costing methods move landed costs into COGS as your products sell. When you're ready to see whether your current systems can keep up, take our ERP Readiness Quiz below to find out where you stand.