How to Calculate Landed Cost Per Unit Before You Place an Order

The factory quote is the starting number, not the real one. Here is every line item that sits between the factory floor and your warehouse, and how to add them up before you commit.
Your factory quote is not your cost.
It is the starting number. Everything that happens after it decides whether the product makes money.
Landed cost is the number that matters. It is what one unit actually costs you by the time it sits in your warehouse, ready to sell. Founders who price off a factory quote launch, sell well, and then cannot work out where the margin went.
The good news is that this is arithmetic. No jargon required.
What landed cost actually means
Landed cost is the total cost of getting one unit from the factory floor to your door.
It includes the product. It also includes freight, duty, insurance, port handling, inspection and every small fee in between.
Most founders can name two of those. The rest is where margin quietly leaks.
The landed cost formula
Landed cost per unit = (product cost + freight + duties and taxes + insurance + handling and clearance + other costs) divided by number of units.
That is the whole formula.
The maths is not the hard part. Knowing which line items exist, and getting real numbers for them before you commit, is the hard part.
The line items founders miss
Freight is not one number
Sea freight is quoted as a container rate or a per cubic metre rate. Neither is your total freight cost.
Add origin charges at the factory end. Add the port fees at your end. Add the truck from the port to your warehouse.
Volume matters more than weight for most consumer products. A light product in oversized packaging can cost more to ship than a dense one. Ask your factory for carton dimensions and cubic metres per carton before you finalise the packaging design, not after.
Duty depends on your product classification
Every imported product has a tariff classification. That code determines the duty rate you pay.
Rates vary widely by category and by country of origin. Guessing costs money. Get the classification confirmed before you order, not when the goods are sitting at the port.
Import taxes sit on top of duty in most markets. Some are recoverable, some are not. Know which applies to you.
Sampling and tooling
Samples cost money. Courier for samples costs more than founders expect.
If your product needs a mould or a die, that tooling is a real cost. Spread it across your first order and your landed cost jumps. Spread it across three orders and it looks very different. Both views are useful. Do both.
Inspection
A pre-shipment inspection is a small cost against the value of a container. Skipping it is not a saving. It is a bet.
Put it in the calculation from the start so it never feels like an extra.
Payment and currency
Bank transfers carry fees. Currency conversion carries a spread.
On a small first order these are minor. On repeat production they are not. Track them.
The costs after arrival
Warehousing. Repacking. Labelling for your market. Damaged units. Returns.
None of these are manufacturing costs. All of them sit between you and profit.
A worked example
Say you order 1,000 units at a quoted price of $8 each. Illustrative numbers only, but the shape is real.
- Product cost: $8,000
- Sea freight and origin charges: $1,400
- Duty and import taxes: $600
- Customs clearance and port handling: $450
- Inspection: $300
- Domestic transport to warehouse: $250
- Bank fees and currency spread: $150
- Tooling, spread across this order: $1,200
Total: $12,350. Landed cost per unit: $12.35.
The factory quoted $8. Your real cost is 54 percent higher.
If you set your retail price off the $8, your margin is already gone.
FOB is not your cost either
FOB means the factory covers the goods to the port of departure. That is it.
Everything after that point is yours. Freight, insurance, duty, clearance, delivery.
An FOB price is a useful comparison tool between suppliers. It is not a landed cost. Treat it as a line item, not an answer.
What to do with the number
Once you have a landed cost per unit, three decisions get easier.
Pricing. You can set retail with a margin you can actually defend, including the discounting you will inevitably do.
Order size. Larger orders spread freight and tooling further, which lowers landed cost per unit. That has to be weighed against cash tied up in stock. Now you can weigh it with numbers instead of instinct.
Product decisions. Sometimes the fix is not a cheaper factory. It is smaller packaging, a lighter material, or a different port. Landed cost shows you where the money actually sits.
Common mistakes
Using the factory quote as the cost. The most expensive mistake on this list.
Forgetting tooling. It only happens once, but it still has to be paid for.
Ignoring packaging volume. Cartons that are two centimetres too tall can add a full pallet to a shipment.
Building the model after the order. Do it before. It is the cheapest hour of work in the whole project.
The takeaway
Manufacturing does not go wrong because the product is bad. It goes wrong because the numbers were never properly built.
Landed cost is not complicated. It is just detailed. Build the model before you place the order and you will price with confidence instead of hope.
If you want a second set of eyes on your costings, your supplier quotes or your first production run, book a sourcing call. We will look at the real numbers with you.

Kristy Withers
Founder of Source Haus. 20+ years in product sourcing and manufacturing across China, India and Southeast Asia.

