How do you calculate landed cost per unit?

Add up all the costs of a shipment (goods, freight, duty, fees, insurance, prep), then allocate that total across the units in the shipment, typically by quantity, weight, or value. The result is each unit's landed cost, which then feeds your COGS when the unit sells.

What is the difference between landed cost and COGS?

Landed cost is the all-in cost of a unit sitting in your inventory. COGS is the landed cost of the units that actually sold during a period. Landed cost lives on the balance sheet as inventory until the unit sells, at which point it becomes COGS on the income statement.

Should I include tariffs and duties in landed cost?

Yes. Customs duties and tariffs are a direct cost of acquiring imported inventory and belong in landed cost. Because tariff rates can change between shipments, it's worth verifying the current rate per shipment so your unit costs stay accurate.

Does QuickBooks track landed cost for Amazon sellers?

Not well on its own. QuickBooks Online has no built-in way to spread a freight or duty bill across the units of a shipment, so most sellers using QuickBooks handle landed cost in a spreadsheet or add a tool that tracks POs and shipments at the unit level. If landed cost accuracy matters to your margins, make unit-level cost allocation a requirement when you compare accounting software for amazon sellers rather than assuming the ledger will handle it.

Should I allocate freight by quantity, weight, or value?

Match the allocation to how the cost is actually incurred. Freight is billed on weight and dimensions, so weight-based allocation is fairest for mixed shipments. Duty is charged as a percentage of declared value, so allocate it by value. Flat fees like brokerage can go by quantity. For a single-SKU shipment it all collapses to the same answer, so quantity is fine.

Does Amazon FBA storage cost count as landed cost?

No. Landed cost stops once the unit is in your possession and sellable. Storage at an Amazon fulfillment center happens after that point, so monthly and long-term storage fees are operating costs of holding inventory rather than costs of acquiring it, and they belong in your expenses instead of your unit value. Inbound freight to the fulfillment center and any prep or labeling done before check-in are a different matter and do belong in landed cost. Watch storage separately anyway, because a slow-moving SKU can be profitable on landed cost and still lose money once you count what it costs to sit there.

Do I need to recalculate landed cost for every shipment?

Yes, if you want accurate margins. Freight rates, duty rates, and even supplier pricing move between shipments, so each shipment produces its own landed cost. Units from different shipments can then carry different costs, which your inventory costing method (FIFO or weighted average) resolves when they sell.

Why does landed cost matter for FBA reimbursements?

When Amazon loses or damages a unit, the true value of that loss is its landed cost, not the supplier price. Amazon's reimbursement estimate may not cover your full cost, so having accurate landed cost lets you check whether the payout actually made you whole.

Glossary

What is Landed cost?

The true per-unit cost of inventory: supplier price plus freight, duty, taxes, and prep.

Landed cost is the true, all-in per-unit cost of getting a product into your inventory and ready to sell. If you've wondered what landed cost means, the simplest definition is: the supplier's price plus every cost incurred to land that unit at the warehouse, including inbound freight, customs duties and tariffs, insurance, and any prep or labeling. It is the number that should drive your COGS, your inventory valuation, and your pricing, because it reflects what the unit actually cost you, not just what the invoice said.

Sellers who price off the supplier invoice alone consistently overestimate their margins, sometimes by enough to turn a "profitable" product into a loss. Freight and duty can add a meaningful slice to a unit's cost, and that slice varies by shipment, supplier, and route. Landed cost is the discipline of capturing all of it and dividing it down to the unit, so that every product-level profit decision starts from reality.

This entry covers what goes into landed cost, how to calculate it step by step, a worked example with hypothetical numbers, how landed cost flows through your bookkeeping, and the mistakes that quietly wreck margin numbers for otherwise careful sellers.

What does landed cost mean, and what goes into it?

Landed cost means the total cost to acquire a unit and bring it to a sellable state in your possession. It starts with the supplier price on your purchase order, then adds every cost between the factory and your shelf. The most reliable way to build it is to total the costs of a shipment and allocate them across the units in that shipment, usually by quantity, weight, or value, so each unit absorbs its fair share.

The components are predictable even if the amounts change shipment to shipment. The point is that none of these are optional add-ons. They are part of what the unit cost you, and excluding any of them understates your COGS and overstates your margin. Tariffs in particular have become a moving target for importers, so re-checking duty rates per shipment is no longer something you can skip.

•Supplier/manufacturer unit price (from the PO)
•Inbound freight (ocean, air, or ground to your destination)
•Customs duties and tariffs
•Import taxes, brokerage, and clearance fees
•Insurance on the shipment
•Prep, labeling (FNSKU), bundling, and inspection

How to calculate landed cost, step by step

The arithmetic is easy. The discipline is in collecting every cost before you divide. Most sellers who get landed cost wrong don't make math errors; they just never gather the freight invoice, the customs entry, and the prep bill into one place before the units start selling.

Work shipment by shipment. A shipment is the natural unit of costing because freight, duty, and clearance fees are billed at the shipment level, and the units inside it all traveled together. Trying to cost at the PO level when one PO ships in three partial shipments, each with its own freight bill, is where spreadsheets start to fall apart.

If the idea of pooling costs and pushing them down to units feels familiar, it should: it's job costing wearing different clothes. A construction job absorbs its own materials, labor, and overhead, which is why job cost accounting software exists at all, and a shipment absorbs its own freight, duty, and clearance the same way. Sellers who assemble or bundle in-house also carry what cost accounting calls conversion cost, the labor and overhead of turning components into a finished unit, and that belongs in the unit's value exactly like a prep center's invoice does.

Once you have the shipment total, you need an allocation basis. Allocating by quantity (every unit gets an equal share) is simplest and works fine when the shipment is one SKU or several similar SKUs. Allocating by weight or volume is fairer when a shipment mixes heavy and light products, because ocean and air freight are priced on weight and dimensions, so a cast-iron skillet should absorb more of the freight bill than a silicone spatula riding in the same container. Allocating by value makes sense for duty, since customs calculates duty as a percentage of declared value. In practice many sellers use a hybrid: freight by weight, duty by value, flat fees by quantity. Pick a method, write it down, and apply it consistently, because switching methods between shipments makes period-over-period margins impossible to compare.

•Step 1: Total the supplier invoice for the shipment (goods cost)
•Step 2: Add the freight invoice, including origin charges and destination delivery
•Step 3: Add duties, tariffs, and import taxes from the customs entry
•Step 4: Add brokerage, clearance, insurance, and any inspection or prep fees
•Step 5: Choose an allocation basis (quantity, weight, or value) and split the total across units
•Step 6: Record the per-unit landed cost against that specific shipment, not as a global average

A worked example with hypothetical numbers

Say you order 1,000 units of a kitchen gadget from a supplier at $4.00 per unit. The goods cost is $4,000. Ocean freight for the shipment comes to $800, and suppose duty on this hypothetical product category runs 10 percent of declared value, so $400. Customs brokerage and clearance add $150, marine insurance adds $50, and your prep center charges $200 to inspect, polybag, and apply FNSKU labels. Total shipment cost: $4,000 plus $800 plus $400 plus $150 plus $50 plus $200, which is $5,600.

Divide $5,600 by 1,000 units and your landed cost is $5.60 per unit. That's 40 percent higher than the $4.00 invoice price. Every margin calculation you run off $4.00 is fiction.

Now watch what that does to a real decision. Suppose you sell this gadget for $19.99 and your combined referral fee, fulfillment fee, and other selling costs come to about $9 per unit (check the current fee schedules for your actual numbers, these are illustrative). At a $4.00 unit cost you'd think you're clearing about $7 per unit, a healthy margin that justifies scaling ad spend. At the true $5.60 landed cost you're clearing about $5.40, which is 23 percent less profit per unit than you believed. Multiply that gap across a few thousand units a month and you've been making inventory and advertising decisions with numbers that were wrong by five figures a year.

It cuts the other way too. The next shipment might go by a cheaper route, or the tariff might drop, and landed cost falls to $5.10. If you're still costing at a stale $5.60, you'll underestimate margin and possibly kill a product that's actually working. Per-shipment landed cost keeps both errors out of your decisions.

Landed cost vs supplier cost vs COGS

Supplier cost is just the price you paid the factory. Landed cost is that price plus everything it took to get the goods to you. COGS is the landed cost of the units that actually sold in a period. These three are often confused, but the relationship is a clean chain: supplier cost is one input to landed cost, and landed cost is what flows into COGS when a unit sells.

The reason this chain matters is that errors compound downstream. If your landed cost is wrong, your inventory on the balance sheet is mis-valued, your COGS is wrong, your gross margin is wrong, and any reimbursement you receive for a lost unit can't be checked against a correct cost. Building landed cost once, accurately, and carrying it through to COGS is the foundation of every reliable margin number you'll ever produce.

How landed cost flows through your bookkeeping

In proper accrual accounting, landed cost is capitalized, not expensed. When the shipment arrives, the full $5,600 from the example above goes onto the balance sheet as inventory, an asset. Nothing hits the profit and loss yet. When a unit sells, $5.60 moves from inventory to COGS on the income statement, matched against the revenue from that sale. Run a perpetual inventory system and each receipt updates the pool immediately, so a weighted average cost recalculates the moment a new shipment lands rather than waiting for a period-end count. That matching is the whole point: your P&L shows the cost of what you sold in the period, not the cost of what you happened to pay for in the period.

The common shortcut, expensing freight and duty in the month the invoice was paid, distorts everything. Pay for a big container in March and March looks terrible while April through June look artificially great, even though the units sold evenly across all four months. Cash-basis books do exactly this, which is why sellers on cash-basis bookkeeping see wild margin swings that have nothing to do with how the business actually performed. Tax treatment has its own rules for inventory capitalization, so ask your accountant what applies to your situation, but for management decisions the capitalize-then-release approach is the one that tells the truth.

Tooling matters here because generic ledgers don't do this for you. This also catches importers comparing QuickBooks Online vs Desktop on cost and features: the top Desktop tiers have shipped a landed-cost allocation feature, and QuickBooks Online has no equivalent, so a migration can quietly lose the one thing you were relying on. The cheaper tiers are further away still. QuickBooks Self-Employed is priced for freelancers and has no inventory or COGS module at all, so it can't hold a landed cost even in principle. Sellers who want cost centers in QuickBooks Online generally end up using classes or locations, which can tag a freight bill to a channel or a brand but still won't push it down to the unit. QuickBooks Online on its own has no native way to spread a freight bill across the units of a shipment; quickbooks for amazon sellers typically means QBO plus a connector app, and most connectors focus on settlement revenue, not inbound costs. A2X accounting and Link My Books, for example, are excellent at turning payouts into clean journal entries, but landed cost still lives in your spreadsheet unless your amazon accounting software tracks POs and shipments at the unit level. If you're evaluating amazon seller accounting software, ask specifically whether it allocates freight and duty to units and carries that value into COGS automatically. BeanHawk builds landed cost from the PO and shipment records and attaches it to each unit, which is also what lets a lost-inventory reimbursement be checked against the real cost of the unit Amazon lost.

An honest caveat: at low volume, a spreadsheet is genuinely fine. If you run five SKUs and a handful of shipments a year, a well-kept sheet with one tab per shipment will produce accurate landed costs, and buying software for it is overkill. The spreadsheet breaks when shipments multiply, SKUs mix within containers, and partial shipments split single POs. That's the point where ecommerce inventory management software or an accounting tool with real amazon fba accounting support stops being a luxury.

Why landed cost is the backbone of margin and reimbursement accuracy

Pricing and product selection both depend on landed cost. When you evaluate whether an Amazon product is worth selling, you subtract landed cost and the platform fee stack from your price to find true net margin. Skip the freight and duty and the math lies to you. Landed cost is also what reveals when a product's economics break after a tariff increase or a freight spike, often before the bank balance makes it obvious.

Landed cost is equally central to FBA reimbursement recovery. When Amazon loses or damages a unit, the fair value of that loss is its landed cost, not the supplier invoice price. Amazon's reimbursement may be capped or based on its own estimate, so to know whether you've been made whole you need your real per-unit cost on hand. BeanHawk attaches landed cost to each unit so lost-inventory reimbursements can be valued and verified against what you actually paid.

Common landed cost mistakes

The same handful of errors show up in almost every set of seller books. None of them are exotic. All of them are avoidable once you know to look.

The most expensive mistake is the stale average: a seller calculates landed cost carefully once, then reuses that number for a year while freight rates and tariffs move underneath it. Landed cost isn't a property of the product, it's a property of the shipment. The second most expensive is allocating a mixed container purely by quantity, which makes your light products look costlier than they are and your heavy products look cheaper, so you scale the wrong SKU.

•Pricing and margin math off the supplier invoice alone, ignoring freight and duty entirely
•Expensing freight in the month it was paid instead of capitalizing it into inventory
•Using one landed cost forever instead of recalculating per shipment
•Allocating a mixed-weight container by quantity, distorting per-SKU costs both directions
•Forgetting the small lines: brokerage, insurance, inspection, prep, and inbound placement charges
•Ignoring currency movement between paying the supplier deposit and paying the balance
•Leaving defective or failed-inspection units in the denominator, which understates the cost of the sellable units that remain

Frequently asked questions

What does landed cost mean?: Landed cost means the total per-unit cost of getting a product into your inventory ready to sell: the supplier price plus inbound freight, duties and tariffs, import fees, insurance, and prep. It is the real cost of the unit, as opposed to just the supplier invoice price.
How do you calculate landed cost per unit?: Add up all the costs of a shipment (goods, freight, duty, fees, insurance, prep), then allocate that total across the units in the shipment, typically by quantity, weight, or value. The result is each unit's landed cost, which then feeds your COGS when the unit sells.
What is the difference between landed cost and COGS?: Landed cost is the all-in cost of a unit sitting in your inventory. COGS is the landed cost of the units that actually sold during a period. Landed cost lives on the balance sheet as inventory until the unit sells, at which point it becomes COGS on the income statement.
Should I include tariffs and duties in landed cost?: Yes. Customs duties and tariffs are a direct cost of acquiring imported inventory and belong in landed cost. Because tariff rates can change between shipments, it's worth verifying the current rate per shipment so your unit costs stay accurate.
Does QuickBooks track landed cost for Amazon sellers?: Not well on its own. QuickBooks Online has no built-in way to spread a freight or duty bill across the units of a shipment, so most sellers using QuickBooks handle landed cost in a spreadsheet or add a tool that tracks POs and shipments at the unit level. If landed cost accuracy matters to your margins, make unit-level cost allocation a requirement when you compare accounting software for amazon sellers rather than assuming the ledger will handle it.
Should I allocate freight by quantity, weight, or value?: Match the allocation to how the cost is actually incurred. Freight is billed on weight and dimensions, so weight-based allocation is fairest for mixed shipments. Duty is charged as a percentage of declared value, so allocate it by value. Flat fees like brokerage can go by quantity. For a single-SKU shipment it all collapses to the same answer, so quantity is fine.
Does Amazon FBA storage cost count as landed cost?: No. Landed cost stops once the unit is in your possession and sellable. Storage at an Amazon fulfillment center happens after that point, so monthly and long-term storage fees are operating costs of holding inventory rather than costs of acquiring it, and they belong in your expenses instead of your unit value. Inbound freight to the fulfillment center and any prep or labeling done before check-in are a different matter and do belong in landed cost. Watch storage separately anyway, because a slow-moving SKU can be profitable on landed cost and still lose money once you count what it costs to sit there.
Do I need to recalculate landed cost for every shipment?: Yes, if you want accurate margins. Freight rates, duty rates, and even supplier pricing move between shipments, so each shipment produces its own landed cost. Units from different shipments can then carry different costs, which your inventory costing method (FIFO or weighted average) resolves when they sell.
Why does landed cost matter for FBA reimbursements?: When Amazon loses or damages a unit, the true value of that loss is its landed cost, not the supplier price. Amazon's reimbursement estimate may not cover your full cost, so having accurate landed cost lets you check whether the payout actually made you whole.

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