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Domestic vs Offshore CNC Machining Cost Calculator

Compare the true total cost of domestic US machining vs offshore manufacturing. Includes hidden costs like tariffs, shipping, quality risk, lead time, and communication overhead.

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Cost Item Domestic Offshore
Part Cost----
Shipping----
Tariffs & Duties----
Quality Rejects----
Inventory Carrying----
Communication Cost----
Total Cost----
True Cost Per Part----
Savings / Premium --
Lead Time Difference --

Estimates based on industry averages. Actual costs vary by project.

Why True Cost Matters

The quoted part price is just the beginning. Offshore machining often looks 40-60% cheaper on paper, but hidden costs can erase most or all of that savings. This calculator helps you see the full picture before you commit to a supplier.

Tariffs and Duties

US tariffs on CNC machined parts from China currently range from 25% to over 50% depending on the material and HTS classification. These are applied on top of the declared value plus shipping costs. Tariff rates can change with little notice, creating budget uncertainty.

Quality Risk

Offshore rejection rates are typically 3-5x higher than domestic. When parts fail inspection, you pay for the bad parts, the replacement order, additional shipping, and the delay to your project timeline. For critical applications, one quality escape can cost more than the entire order.

Pro tip: For quantities under 1,000 parts, domestic manufacturing is almost always the better value when you factor in total cost and lead time. Offshore makes more sense for high-volume commodity parts where quality requirements are less critical.

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Frequently Asked Questions

The per-part price is often higher domestically, but the true total cost is frequently comparable or lower when you factor in shipping, tariffs (25%+ on Chinese machined parts), quality rejection rates, communication overhead, IP risk, and inventory carrying costs.
As of 2025-2026, US tariffs on CNC machined parts from China range from 25-50% depending on the specific HTS code and any additional Section 301 tariffs. These tariffs are applied to the declared value of the goods plus shipping costs.
Hidden costs include: international shipping and customs brokerage, tariffs and duties, higher quality rejection rates (typically 5-15% vs 1-3% domestic), longer lead times increasing inventory carrying costs, communication overhead, IP theft risk, and rework costs.
Almost always yes. Prototypes benefit enormously from domestic manufacturing: lead times are days instead of weeks, you can iterate quickly, communication is direct, and there are no tariffs or international shipping costs.
Domestic CNC machining typically ships in 5-15 business days. Offshore from China typically takes 30-60 business days including manufacturing, ocean freight, and customs. Air freight can reduce this to 15-25 days but at significantly higher cost.

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