Domestic vs Overseas Manufacturing: Run the Landed Cost, Not the Piece Price

An overseas piece price 35% below domestic usually lands 5% to 20% below domestic once you add freight, duty, customs fees, inventory carrying cost, quality inspection, and travel. On a 42-gram plastic part, a $0.38 quote from Asia against $0.62 domestic becomes $0.76 landed at 25,000 units a year, because the fixed costs of managing an overseas supplier do not amortize at that volume. At 250,000 units a year the same comparison flips to $0.53 landed against $0.64, a real advantage worth about $27,000 annually.

The crossover for most independent-inventor products falls between 30,000 and 60,000 units a year. Below that, the piece price savings get eaten by overhead you did not put in the spreadsheet.

The Landed Cost Equation

Landed cost per unit = FOB price + international freight + duty + customs fees + inventory carrying + quality cost + travel and management + defect allowance

Each term, with real numbers.

FOB price. What the factory quotes, free on board at their port. Typically 30% to 45% below a comparable domestic quote for plastic parts.

International freight. Ocean LCL runs $80 to $220 per cubic meter depending on lane and season. A full 20-foot container runs $2,000 to $6,000 and holds roughly 28 cubic meters. Air freight runs $4.50 to $9.00 per kilogram and is four to six times the ocean cost. Freight is charged on volume, not weight, for most consumer goods, so a bulky part gets hit hard and a dense small part barely notices.

Duty. Base duty on most molded plastic articles falls between 3.0% and 6.5% under the U.S. tariff schedule, applied to the FOB value. Additional tariff actions against specific countries have moved several times in recent years and can add anywhere from 7.5% to well over 25% on top of the base rate. Get a current classification and rate from a licensed customs broker before you model anything. A rate you read last year may be wrong today, and the difference between 5% and 30% changes the entire decision.

Customs fees. A merchandise processing fee and a harbor maintenance fee apply to formal entries, plus a customs broker charge of $75 to $175 per entry. On a small shipment these are a few cents a unit; on a large one, fractions of a cent.

Inventory carrying. Ocean transit is 30 to 45 days depending on lane, plus 1 to 2 weeks for drayage and customs clearance. That is 6 to 9 weeks of inventory in motion you have already paid for. At a 15% annual cost of capital, 60 extra days of carrying on a $0.38 part is about $0.009 per unit. The bigger cost is the working capital itself: you finance two extra months of stock, permanently.

Quality cost. Third-party inspection runs $300 to $600 per inspector-day. Two to four inspections a year is a light program. A real one, on a product with cosmetic requirements, is six to twelve days a year.

Travel and management. One trip costs $3,000 to $8,000 all in. Most programs need one or two a year, more during launch. Add the hours spent on 9 p.m. calls, which is a real cost even when nobody invoices for it.

Defect allowance. Budget 1% to 3% for parts that ship but do not pass your incoming inspection. Rework or replacement of an overseas defect takes 10 to 14 weeks to correct, not 10 days.

The Comparison at Two Volumes

Same 42-gram ABS housing. Domestic quote: $0.62 piece price, $26,000 tool, MOQ 1,000, 4-week lead time. Overseas quote: $0.38 FOB, $11,000 tool, MOQ 5,000, 18-week door-to-door lead time.

At 25,000 units a year, overseas costs $3,050 more annually and takes 14 more weeks to deliver. At 250,000, overseas saves $33,000 a year plus $15,000 on the tool.

The variables that flip the answer are quality inspection and travel, because they are fixed costs. Fixed costs divided by small volumes are large per-unit numbers. That is the whole mechanism.

Where the Crossover Sits

Strip out the fixed costs and the math is clean. Overseas variable landed cost on this part is about $0.490. Domestic is $0.640. That is $0.150 per unit in overseas favor. The fixed overhead of running an overseas supplier is roughly $6,800 a year at a light quality program.

Breakeven = $6,800 ÷ $0.150 = about 45,000 units a year.

Add the $15,000 tooling savings and the first-year breakeven drops toward 30,000. Add a heavier inspection program or a second trip and it climbs past 60,000. Run this arithmetic with your own numbers rather than accepting the range, because your part’s freight profile and inspection burden are specific to your part.

Things That Do Not Show Up in the Quote

MOQ. Overseas molders typically want 3,000 to 10,000 units per order. Domestic shops run 500 to 2,000. If your real demand is 800 units a quarter, an overseas MOQ of 5,000 means you carry 15 months of inventory. At a $0.76 landed cost that is $3,800 of capital sitting on a shelf, plus warehouse space, plus obsolescence risk if you revise the design.

Lead time. Door to door, overseas runs 16 to 22 weeks: 8 to 12 weeks production, 30 to 45 days ocean, 1 to 2 weeks customs and drayage. Domestic runs 3 to 6 weeks on a repeat order. That difference is a forecasting problem. You are committing to a quantity based on demand five months out.

Payment terms. Overseas standard is 30% deposit at order, balance before shipment or against the bill of lading. Domestic is commonly net 30 after delivery. That swing is a working capital difference of one to two months of cost of goods, every cycle.

Change cost. A design revision on a domestic tool means a phone call and a two-week tool trip. On an overseas tool it means shipping the tool or shipping an engineer, and 6 to 12 weeks. Products that are still evolving belong close to home.

Tool location. Your mold physically sits in another country under another legal system. Recovery is possible but slower and more expensive than domestic recovery. The protections that matter are covered in who owns the mold: staged payment tied to milestones, photographic proof of tool identification marking, and delivery of tool prints before final payment.

Intellectual Property Risk, Stated Honestly

Patents are territorial. A U.S. patent gives you rights in the United States. It does not prevent manufacture in another country for sale in that country or in third countries. The USPTO’s overview of the patent process explains the sequence, and if foreign markets matter, a PCT application within 12 months of your priority date preserves the option to file in most major jurisdictions.

Practical risk management for an inventor sending files overseas:

• File at least a provisional before any files leave your control, at a small entity fee of $130 to $325
• Use a mutual NDA with a governing law and forum you could enforce in
• Split the work where the design supports it, so one supplier does not hold the complete product
• Register your trademark in the manufacturing country, because a brand name is often easier to protect there than a mechanism
• Order and inspect production yourself rather than allowing the factory to hold your finished goods and your tooling and your packaging artwork all at once

None of this eliminates the risk. It reduces the easy version of it. Start with a $399 patent search so you know whether you have something worth protecting, then decide how much protection the product justifies. The USPTO’s patent basics covers what a search and a filing each establish.

When Domestic Wins Outright

• Annual volume under about 30,000 units. The fixed overhead does not amortize.
• Bulky or low-density parts. Freight is charged on volume. A part that is mostly air ships badly.
• Products still changing. Iteration speed beats piece price during the first 18 months.
• Regulated products. Medical, food contact, and children’s products carry documentation and audit burdens that are far easier to manage with a supplier you can drive to.
• Short lead time requirements. Seasonal products, retail resets, and anything with a demand spike you cannot forecast five months out.
• High IP sensitivity. A product whose entire value is one mechanism, with no brand moat and no manufacturing complexity.
• Small assemblies with heavy secondary operations. Domestic assembly labor costs more per hour but eliminates a shipping leg and a communication layer.

When Overseas Wins Outright

• Volume over about 60,000 units a year with a stable design
• Labor-intensive assemblies where the hour count is high and the process is settled
• Products with many purchased components already sourced in the same region, where consolidation saves a supply chain leg
• Price-driven categories where a $0.15 unit cost difference decides whether the product has a retail margin

The Hybrid That Works

Most disciplined hardware teams do not choose once. They sequence.

Launch domestically on an aluminum bridge tool. Ship 3,000 to 8,000 units. Learn what breaks, what customers return, and what the real demand curve looks like. Then, with a frozen design and a demand number you did not invent, cut a production tool. If the volume justifies it, cut that tool overseas and run it overseas. If it does not, cut it domestically and stop thinking about it.

That sequence costs a few cents more per unit for the first year and removes the two most expensive mistakes in hardware: tooling a design that is still wrong, and moving production overseas before the volume supports the overhead. The low-volume paths that make the first stage cheap are laid out in the low-volume manufacturing options, and the piece-price mechanics behind every number in this article sit in what injection molding costs.

Whichever direction you go, quote both. Get a domestic quote and an overseas quote on the same RFQ package, then build the landed cost model before you decide. How to build that shortlist is covered in finding a manufacturing partner, and Enhance runs the comparison itself as part of manufacturing sourcing. Where this line item sits against patent, design, and launch spend is mapped in the complete inventor cost breakdown.

FAQ

How much cheaper is overseas injection molding?

Piece price typically 30% to 45% below domestic, tooling 40% to 60% below. Landed cost, after freight, duty, inspection, and travel, usually lands 5% to 20% below domestic at volume, and above domestic below roughly 30,000 units a year.

Can I get a tool built overseas and run it in the United States?

Yes, and it is a common arrangement. You capture 40% to 60% of the tooling savings, keep the asset physically accessible, and get domestic lead times on production. Confirm the tool is built to a steel spec your domestic molder will accept, and budget $1,500 to $6,000 for inspection and refit when it arrives. Verification is the hard part at a distance, so ask for steel certifications, photographs of the tool in the shop, and the SPI class in writing. The class definitions and what each one costs sit in injection molding tooling cost.

What is the minimum order quantity for overseas manufacturing?

Usually 3,000 to 10,000 units per order for injection molded parts, sometimes stated as a minimum dollar value instead. Some factories will run a smaller first order at a higher piece price. Domestic shops commonly run 500 to 2,000.

How do I protect my design when manufacturing overseas?

File at least a provisional before files leave your control, use a mutual NDA with an enforceable forum, split work across suppliers where the design allows, and register your trademark in the manufacturing country. Patents are territorial, so a U.S. filing alone does not cover foreign manufacture for foreign sale. The U.S. Small Business Administration publishes free guidance on export and international trade issues for small companies.

How long does overseas production take, door to door?

Sixteen to twenty-two weeks on a first production order: 8 to 12 weeks for production, 30 to 45 days ocean transit, and 1 to 2 weeks for customs and drayage. Repeat orders run 12 to 18 weeks. Build your inventory plan around 18 weeks, not around the factory’s 8-week production quote.