5 Hidden Costs That Blow Up Your Landed Cost Estimate

You built the landed cost estimate. Product cost, freight, duty, and a line for fees. The math worked, you set your price, and you placed the PO.

Then the real numbers came in, and they were higher. Not because freight spiked or duty changed, but because five smaller costs never made it into the spreadsheet. They arrive on separate invoices from separate vendors, usually after the money has already moved, which is exactly why they get missed.

Here are the five, what each one typically costs, and how to get them into your number before you commit to an order.

What is a landed cost estimate, and why does it usually run low?

A landed cost estimate is your projected cost per unit once a product is delivered to your dock: product cost + freight + duty + fees. It usually runs low because the "fees" line is a round-number guess, and the real costs behind it are spread across brokers, banks, insurers, labs, and terminals.

The other problem is that most of these costs are charged per shipment or per product, not per unit. They look small on a large order and painful on a small one. If the gap between your supplier's price and your real cost is still fuzzy, start with our breakdown of FOB vs. landed cost (opens in new tab), then come back here.

1. Customs broker fees

Customs broker fees are what you pay a licensed broker to file your import entry. Published ranges run from about $125 to $350 per entry depending on the broker and entry type, and that's before add-ons. Sourcify's own cost guide puts brokerage at $150 to $400 per shipment (opens in new tab).

The add-ons are where estimates slip. An ISF filing runs roughly $25 to $85, a continuous bond runs roughly $250 to $2,000 a year depending on the bond amount, and extra HTS lines cost a few dollars each (Ginger Control (opens in new tab), WarehousingCosts (opens in new tab)). The same entry also carries government fees: a merchandise processing fee of 0.3464% of entered value ($34.58 minimum, $670.86 maximum for entries on or after October 1, 2026) and, on ocean shipments, a 0.125% harbor maintenance fee.

Because the entry fee is fixed, order size changes everything. A $250 entry on 500 units adds $0.50 a unit. The same entry on 5,000 units adds $0.05.

2. Cargo insurance

Cargo insurance covers loss or damage in transit, and premiums typically run 0.2% to 2% of insured value, with about 0.5% a common benchmark (Freight Insurance Coverage (opens in new tab)). It isn't in your FOB price. Under FOB terms, risk passes to you once the goods are loaded on board the vessel, per the ICC's Incoterms rules (opens in new tab), so you're uninsured by default unless you buy a policy.

What you pay depends on the goods, the route, the coverage level (all-risk costs more than named perils), and your deductible. On a $30,000 shipment, 0.5% is $150. Skipping it saves $150 and leaves you holding the full $30,000 if a container is lost or damaged.

3. Storage: demurrage, detention, and early arrivals

Storage becomes a landed cost when your container sits at the port, or the carrier's equipment stays out, longer than the free time allows. Demurrage is the charge for a loaded container sitting at the terminal past free time. Detention is the charge for keeping the carrier's container outside the port past free time.

Free time commonly runs 2 to 7 days depending on the port and is counted in calendar days at most US terminals, so weekends use it up. After that, charges climb in tiers. One published breakdown for a 40-foot container shows demurrage starting around $120 to $300 a day at major US ports and detention starting around $95 to $160 a day, both rising the longer the box sits (WarehousingCosts (opens in new tab)). Confirm current rates with your terminal and carrier.

The usual triggers are customs exams, missing paperwork, and a warehouse that can't take the delivery on time. If your 3PL isn't ready, you can also pay receiving and storage on inventory you can't sell yet.

4. Currency conversion and wire fees

Currency conversion costs show up as a spread in the exchange rate, not as a line item. Banks commonly add 1% to 3% above the mid-market rate, on top of an outgoing wire fee of about $35 to $50 and, on some routes, $15 to $50 per intermediary bank (Corpay (opens in new tab)).

On a $30,000 payment, a 2% spread is $600. The $45 wire fee is rounding error by comparison. Because the spread is baked into the rate, it never appears as a fee on a statement, which is why nobody budgets for it.

Before your next payment, compare your bank's quoted rate to the mid-market rate on the same day. The gap is your real conversion cost.

5. Compliance testing and certification

Compliance testing is the lab work and paperwork required to legally import and sell certain products, and it's charged per product, not per unit. Children's products, for example, must be tested by a CPSC-accepted third-party lab and covered by a Children's Product Certificate (CPSC (opens in new tab)). Retesting is required after material changes, and periodic testing applies to products in continuous manufacture.

There's an import-side change too. Since July 8, 2026, importers of most regulated consumer products must electronically file certificate data with CBP at entry, and a product without the required certificate on file risks being refused entry (Stinson LLP (opens in new tab)).

Costs vary with materials, colors, and components. ComplianceGate (opens in new tab), a testing consultancy, says its customers typically pay $500 to $1,800 per product, which it describes as an estimate from experience rather than a published rate.

Spread $1,200 across a 5,000-unit first order and it's $0.24 a unit. On a 500-unit pilot, it's $2.40. Beauty, supplements, and food carry their own requirements, so check which apply to your category before you finalize a quote.

What do these five costs add up to?

Take a 5,000-unit order at $6.00 FOB, or $30,000 total. Using midpoints of the ranges above, here's what the five costs add. These are illustrative assumptions, not quotes.

That's about $0.59 a unit, or roughly 10% on top of the $6.00 FOB price, and it's before freight and duty. Storage is a scenario, not a certainty, and the testing is a one-time cost that won't repeat on reorders. The rest show up on nearly every shipment.

How do you add hidden costs to your landed cost estimate?

Add them to the "fees" line, per unit. Izba's landed cost calculator takes four inputs: product cost, freight, duty rate, and other fees. Everything in this post belongs in other fees, and it needs to be a per-unit number.

1. List every shipment-level cost: broker, government fees, insurance, storage, currency conversion, and testing.
2. Add them up.
3. Divide by the number of units in the shipment.
4. Enter the result in other fees.

For one-time costs like testing, pick a rule and stick to it. Either spread the cost over your first order, which shows your true first-order cash cost, or over expected first-year volume, which shows steady-state unit economics. In the example above, $2,946.42 divided by 5,000 units is $0.59.

Common questions about hidden landed costs

What fees does a customs broker charge besides the entry fee? Typical add-ons include an ISF filing, a continuous bond, additional charges for extra HTS lines, and fees for filings with other government agencies. The government's merchandise processing fee and harbor maintenance fee also appear on the same entry.

How much does cargo insurance cost for imports? Premiums typically run 0.2% to 2% of insured value, with about 0.5% a common benchmark. Cost rises with coverage level, route risk, and lower deductibles.

How do I include one-time costs like testing in my landed cost? Divide the one-time cost by the units you want it to cover, either your first order or your expected first-year volume, and add that amount to your per-unit fees.

Run your own numbers

Pull your last supplier invoice, your broker's bill, and your bank's wire confirmation. Then enter the real totals, with these five costs in the other fees line, into Izba's landed cost calculator and see what a unit actually costs you before you set your next price.