Ask most founders what a unit costs them and they will quote the number on their co-manufacturer's invoice. That number is almost always wrong. It is the starting point of your cost, not the end of it.
Landed cost is the total cost to get a product from the factory floor to a shelf where you can actually sell it. It includes the manufactured cost plus freight, duties, tariffs, insurance, and inbound handling. When you leave those pieces out, every downstream number — gross margin, contribution margin, pricing, the margin you show investors — is built on a cost that is too low. And a cost that is too low makes a business look more profitable than it is.
This is one of the most common and most expensive gaps we see in CPG books. Here is how to close it.
What Landed Cost Actually Includes
Your true per-unit cost is the sum of everything required to get inventory into a sellable state and location. For a typical consumer brand, that breaks down into:
- Manufactured or purchase cost. What your co-man, factory, or supplier charges per unit. This is the number most founders stop at.
- Inbound freight. Ocean, air, or ground shipping from the manufacturer to your 3PL or warehouse. For overseas production this can be a large and volatile line.
- Customs duties and tariffs. Import taxes assessed on goods entering the country. With tariff rates shifting significantly over the past year, this line has gone from a rounding error to a real driver of unit cost for a lot of brands.
- Freight insurance and brokerage fees. Cargo insurance in transit plus the customs broker fees to clear your goods.
- Inbound receiving and handling. What your 3PL charges to receive, unload, and put away a shipment.
- Inspection and compliance costs. Quality inspections, lab testing, or certification required before product can ship.
None of these are optional if the goal is to know what you actually make on a sale. A $12.00 unit off the co-man invoice can easily land at $14.50 or more once freight, duties, and receiving are included. Across tens of thousands of units, that gap is the difference between a healthy margin and a business quietly losing money on every order.
Why "COGS = the Invoice" Is So Dangerous
The reason this matters so much comes down to how the costs get recorded. When brands ignore landed cost, they usually do one of two things, and both distort the P&L.
They expense freight and duties separately, as operating expenses. Freight-in and duties get booked to a shipping or overhead line instead of into inventory. Now your gross margin looks great because COGS only reflects the factory price, while the real product costs sit lower down the P&L disguised as opex. Your gross margin percentage is inflated and your operating expenses are bloated with costs that are really cost of goods.
They never capitalize the costs at all. Freight and duty invoices get expensed in the month they are paid, which is often a different month than when the product sells. So one month absorbs a big freight hit with no matching revenue, and later months show sales with artificially low cost. This is the same matching failure that makes cash-basis books so misleading. If that problem sounds familiar, it is closely related to what we cover in what startup founders get wrong about inventory accounting.
Either way, the number you most need to trust — gross margin by product — is fiction.
How to Calculate Landed Cost Per Unit
Landed cost is a per-unit number, but most of its components arrive as lump sums tied to a whole shipment. A single ocean container might carry 40,000 units across six SKUs, with one freight invoice, one duty assessment, and one receiving charge for the entire load. The work is allocating those shipment-level costs down to each unit.
There are three common ways to allocate, and the right one depends on your products:
- By unit count. Divide total shipment costs evenly across every unit. Simple, and fine when your SKUs are similar in size and value.
- By cost or value. Allocate shipment costs in proportion to each SKU's manufactured value. Higher-value items absorb more. Reasonable when duties are value-based, which they often are.
- By weight or volume. Allocate freight in proportion to how much space or weight each SKU takes up. This is the most accurate approach when freight is your biggest variable and your SKUs differ meaningfully in size, like a brand shipping both a lightweight serum and a heavy glass bottle.
The fix: pick an allocation method, apply it consistently, and roll the allocated freight, duties, and handling into each SKU's inventory cost so it flows to COGS when the unit sells. Many brands blend methods — allocating duty by value and freight by volume — which is fine as long as the logic is documented and repeatable.
A worked example makes it concrete. Say a container costs $18,000 in freight, $9,000 in duties, and $3,000 to receive, and it holds 30,000 units. That is $30,000 of shipment costs, or $1.00 per unit on a simple per-unit basis. If those units came off the invoice at $6.00, your true landed cost is $7.00 — a 17% increase over the number a founder would have quoted. Price that product at $20.00 and your gross margin per unit is not the 70% the invoice implies. It is 65%. That five-point swing is the whole game in CPG.
The Tariff Problem Right Now
Tariffs deserve their own note because they have become a moving target. Rates on goods from certain countries have changed materially and sometimes with little warning. For a brand manufacturing overseas, that means:
- Your landed cost is no longer stable from shipment to shipment, even for the same SKU at the same factory price.
- Margins you modeled six months ago may no longer hold, and a product that pencils at one tariff rate may not at another.
- You need to be recalculating landed cost each time input costs move, not setting it once a year.
The brands handling this well treat tariffs as a live input to their unit economics and revisit pricing when the math changes. The brands handling it poorly discover during a board meeting or a fundraise that their "70% gross margin" was really 60% once the new duty rates flowed through.
What Getting This Right Actually Changes
Accurate landed cost is not an accounting nicety. It changes real decisions:
- Pricing. You cannot set a defensible price or a promo floor without knowing your true unit cost. Discount to a number below landed cost and you lose money on volume.
- Channel strategy. Channel-level profitability depends on starting from a true unit cost before you layer on channel fees. Get the base cost wrong and every channel P&L is wrong too. This is the foundation for unit economics by channel.
- Fundraising. Investors underwrite gross margin closely. A margin that holds up under diligence because landed cost was always fully captured is a very different conversation than a margin that gets restated downward while investors are watching.
- Cash planning. Freight and duty are large cash outflows that often hit before the related product sells. Seeing them as part of product cost helps you plan the working-capital gap instead of being surprised by it.
The Bottom Line
The invoice price is where your cost of goods starts, not where it ends. Every dollar of freight, duty, tariff, and handling required to make a unit sellable is part of that unit's cost, and it belongs in inventory and then in COGS — matched to the revenue it helped produce.
Capturing landed cost fully is what separates a gross margin you can build a business on from one that falls apart the first time someone looks closely. In a market where tariffs and freight are moving month to month, that discipline is no longer optional. It is the difference between knowing your economics and guessing at them.