Offshore vs US Domestic Molding: A Landed-Cost Breakdown for One Molded Part
By Ichiplas Sourcing & Commercial Team · Nov 2026 · Reviewed by the Ichiplas engineering team
The unit price on a quote is the least useful number for comparing a domestic and an offshore molder. Here is every line that sits between the quote and your loading dock.
The short answer
For a typical small plastic enclosure at 50,000 parts a year, molding in Malaysia came out about 12% cheaper than a US molder on a fully landed basis, after freight, 2026 US duties, duty on the mold, inventory and travel. The gap widens at higher volumes and closes, or reverses, at low volumes and for large, bulky parts.
Offshore quotes often look 40% cheaper than domestic ones. Domestic molders reply that freight, duty and hassle wipe out the difference. Both are partly right, and the only way to know for your part is to build the comparison line by line. This guide does that for one realistic part and shows every assumption, so you can rebuild it with your own numbers.
Definition: landed cost
Landed cost per part = unit price + amortized tooling + freight + duties and customs fees + brokerage + inventory carrying cost + supplier management cost. It is the full cost of a part arriving at your facility, ready to use.
The Example Part and Assumptions
To keep the comparison honest, both suppliers quote the same part, the same mold specification and the same volume. Only the location changes.
| Input | Assumption |
|---|---|
| Part | Electronics enclosure base, about 150 × 100 × 40 mm, 60 g, PC/ABS |
| Annual volume | 50,000 parts a year for 3 years (150,000 parts in total) |
| Mold | 2-cavity production steel mold, cold runner |
| Tooling price | US: USD 38,000 · Malaysia: USD 17,000 |
| Ex-works unit price | US: USD 0.85 · Malaysia: USD 0.52 |
| Freight from Malaysia | Consolidated sea freight (LCL), door to door to a US West Coast customer, about USD 180 per cubic metre; about 45 m³ a year |
| US duty | HTS 3926.90.99 (other articles of plastics): 5.3% MFN plus about 10% under the 2026 Section 301 action, on the customs value |
| Customs fees | Merchandise Processing Fee 0.3464% and Harbor Maintenance Fee 0.125% |
| Customs brokerage | About USD 150 per entry, 4 shipments a year |
| Inventory carrying cost | 20% a year on extra stock: about 9 weeks for offshore supply (transit plus safety stock) versus about 1 week domestically |
| Supplier management | Visits, audits and engineering travel: US about USD 1,000 a year; Malaysia about USD 4,000 a year |
Prices are illustrative, chosen to be typical for this kind of part in late 2026. They are not a quote. Tooling prices in particular are a generalisation: the real price depends on part size, complexity, steel grade and cavity count, so contact us for an exact quote on your part. Freight rates and tariffs also change often, so rebuild the model with live figures before deciding.
The Landed Cost Breakdown, Per Part
| Cost line | US domestic | Malaysia | How it is calculated |
|---|---|---|---|
| Ex-works unit price | $0.850 | $0.520 | Supplier quote |
| Tooling, amortized | $0.253 | $0.113 | Mold price ÷ 150,000 parts |
| Freight to customer | $0.020 | $0.162 | Malaysia: 45 m³ × $180 ÷ 50,000 |
| Duty on parts | — | $0.080 | 15.3% × $0.52 |
| Duty on the mold (tooling assist) | — | $0.017 | 15.3% × $17,000 ÷ 150,000 |
| Customs fees and brokerage | — | $0.014 | 0.47% of value, plus 4 × $150 ÷ 50,000 |
| Inventory carrying cost | $0.005 | $0.027 | Extra weeks of stock × 20% a year |
| Supplier management | $0.020 | $0.080 | Annual travel and audits ÷ 50,000 |
| Landed cost per part | $1.15 | $1.01 | Malaysia about 12% lower |
What the Breakdown Tells You
- The quote gap shrinks by more than half. The Malaysian unit price is 39% lower, but the landed cost is only about 12% lower. Freight, duty and overhead consume most of the difference.
- Tooling matters as much as unit price. The USD 21,000 difference in mold price is worth 14 cents a part over the program — almost as much as freight.
- Duty is now a real line item. With 2026 duties, tariffs add about 10 cents a part, including the often-forgotten duty on the mold.
- Overhead is small per part but real. Supplier visits and extra inventory add about 10 cents a part offshore. At low volumes this line can decide the outcome.
How the Answer Changes With Volume
Fixed costs such as tooling, travel and brokerage are spread over fewer or more parts, so annual volume moves the result more than any other input.
| Annual volume | US domestic | Malaysia | Difference |
|---|---|---|---|
| 10,000 parts | $2.24 | $1.97 | Malaysia about 12% lower; but see the note on aluminum tooling below |
| 50,000 parts | $1.15 | $1.01 | Malaysia about 12% lower |
| 250,000 parts | $0.93 | $0.75 | Malaysia about 19% lower |
Same part, same 2-cavity mold and unit prices in every row. At 250,000 parts a year both suppliers would usually propose more cavities, which lowers unit price on both sides.
The low-volume caveat: at around 10,000 parts a year, many US molders would propose a cheaper aluminum mold rather than production steel. With a USD 15,000 aluminum tool, the domestic landed cost in our example drops to roughly USD 1.50 a part, well below the offshore figure. For low volumes, short product lives or designs that are still changing, domestic quick-turn tooling is often the better choice. Our guide to reducing injection molding costs explains bridge tooling in more detail.
What the Numbers Don't Capture
Some of the most important differences don't fit neatly into a per-part figure:
- Time zones and face-to-face reviews. Mold modifications take a similar time wherever the mold is, and samples from Malaysia can be air-couriered to arrive in a day or two. The bigger difference is the time zone: a Malaysian team works while the US sleeps, which can speed up overnight turnarounds but means fewer overlapping hours for live calls.
- Cash tied up in transit. Ocean freight means you own the parts for weeks before you can use them. That is included above as carrying cost, but the cash-flow effect can matter more to a growing business.
- Capacity and labour availability. Many US molders face skilled labour shortages, which can affect lead times and responsiveness as much as price.
- Policy risk. US tariffs changed several times in 2025 and 2026. A domestic supplier removes that variable; an offshore supplier in a lower-risk country reduces it.
When Each Option Wins
A US domestic molder usually wins when
- volumes are below roughly 10,000–20,000 parts a year;
- parts are large, light or bulky;
- the design is still changing frequently;
- demand is volatile and needs fast replenishment;
- your customer requires US origin.
An offshore molder usually wins when
- volumes are stable and above about 50,000 parts a year;
- parts are small and dense — typically molded on presses of 400 tonnes or less, under about 450 mm in their largest dimension;
- the program needs several molds, so tooling savings add up;
- the product needs secondary operations and assembly as well as molding;
- you can plan demand a few months ahead.
Build Your Own Comparison in Six Steps
- Ask every supplier to quote the same part, mold specification (steel, cavities, guaranteed shot life) and volume.
- Amortize each mold over the parts you realistically expect to buy, not the mold's maximum life.
- Get the packed volume per part from each supplier, then price freight for your real shipment pattern.
- Confirm the HTS code and current duty rate, and include duty on the tooling assist.
- Add brokerage, customs fees and the carrying cost of the extra inventory that longer transit requires.
- Add a realistic annual budget for visits, audits and engineering time, then divide everything by annual volume.
The Line Most Buyers Miss: Duty on the Mold
When you pay an overseas supplier for a mold that stays in their factory, US Customs treats the mold as an assist: a tool you supplied, directly or indirectly, to produce imported goods. Its value must be added to the customs value of the parts, either on the first shipment or spread across shipments in a way you can document consistently.
In our example, that adds about USD 2,600 in duty over the life of the mold. It is not large, but leaving it out understates landed cost and can lead to penalties if it is discovered in an audit. Ask your customs broker how they want assists declared before the first shipment.
The Hybrid Option: Offshore Tooling, Domestic Molding
Some US companies have molds built in Asia and shipped to a domestic molder. This captures most of the tooling saving while keeping production close to home. The trade-offs are that the mold is imported and dutied as a mold, the domestic molder must accept a tool it didn't build, and modifications become harder once the toolmaker is on the other side of the world. It works best for simple, stable designs.
Incoterms in One Minute
Offshore quotes are only comparable if they use the same Incoterm. The three you will see most often:
- EXW (Ex Works): the price covers the parts ready for collection at the supplier's factory; your freight forwarder handles everything from there. This is the basis we recommend for comparing suppliers, because it isolates the supplier's own price and lets you control freight costs.
- FOB (Free On Board): the supplier delivers to the vessel at the export port; you pay ocean freight, insurance, import duty and delivery.
- DDP (Delivered Duty Paid): the supplier delivers to your door with duty paid. Simple to compare, but check the duty rate and HTS code they assumed.
For transit times and freight options from Malaysia, see our guide to shipping plastic parts from Malaysia to the US.
Why Offshore Unit Prices Are Lower
Resin costs much the same everywhere, because it is a globally traded commodity. The difference in unit price comes from the hourly cost of running a press: labour, factory overhead and energy. A press that costs a US molder well over USD 60 an hour to run, all-in, typically costs a Malaysian molder less than half that. For a part like our example, where machine time is a large share of the price, that difference drives most of the gap. For material-heavy parts with short cycles, the gap is smaller.
Want This Comparison for Your Part?
Ichiplas is an ISO 9001:2015 certified injection molder in Johor Bahru, Malaysia, building molds and running 50 to 360-tonne presses for customers including Dyson and Shimano. We work with US companies adding a Southeast Asian source and quote ex-works (EXW), so you can see exactly what you are paying for the parts and arrange freight on your own terms.
Send your CAD files, annual volume and destination via our contact page. We'll quote tooling and unit price, estimate packed volume and freight, and help you build a landed cost comparison against your domestic quote.
Frequently Asked Questions
What is landed cost in injection molding?
Landed cost is the total cost of getting a molded part to your door, ready to use. It includes the supplier's unit price, amortized tooling, freight, duties and customs fees, brokerage, the cost of carrying extra inventory, and the overhead of managing the supplier. Comparing landed cost rather than unit price is the only fair way to compare a domestic and an offshore molder.
Is it cheaper to make plastic parts in Asia or in the US?
For most small and medium parts at moderate to high volumes, molding in Southeast Asia is still cheaper on a landed basis, typically by 10–20% in the example we modelled, even after freight and 2026 US duties. At low volumes, or for large, bulky parts, a US molder is often cheaper or close enough that speed and convenience decide.
Do I pay US duty on an injection mold built overseas?
If you pay for a mold that stays with an overseas supplier and is used to make parts you import, US Customs treats it as an assist, and its value must be added to the customs value of the parts, usually spread across the shipments. If the mold itself is imported into the US for a domestic molder, it is entered and dutied as a mold. Either way, mold value is not duty-free by default.
How much does freight add to the cost of a molded part from Malaysia?
It depends on how many parts fit in a cubic metre. In our example, a 60 g enclosure that packs at about 0.9 litres per part adds about USD 0.16 per part by consolidated sea freight to the US West Coast. Small, dense parts add a few cents; large, light parts can add more than the molding itself.
At what volume does offshore injection molding pay off?
In our example the offshore option is cheaper from about 10,000 parts a year when both suppliers use production steel molds. If the domestic molder offers a lower-cost aluminum mold, the break-even rises, often to somewhere in the tens of thousands of parts a year. Above roughly 50,000 parts a year, the offshore advantage usually grows with volume.
Which costs do buyers most often leave out of a landed cost comparison?
The most commonly missed items are duty on the tooling assist, customs brokerage and fees, the cost of carrying several extra weeks of inventory, and supplier visits and audits. Including them makes the comparison fairer to domestic suppliers.
What Incoterm should I ask for when comparing offshore quotes?
We recommend comparing every supplier on an EXW (Ex Works) basis. An EXW price covers the parts ready for collection at the supplier's factory, so quotes are directly comparable, and you or your freight forwarder control shipping, insurance and customs at rates you can check yourself. If a supplier quotes FOB or DDP instead, ask them to show the ex-works price separately.
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