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How to estimate manufacturing cost for a hardware product

Early cost work is rarely about finding the exact number. It is about building a cost structure that is accurate enough to guide the product architecture, route to market, and target price before expensive assumptions spread through the project.

Topic Bottom-up product costing
Audience Founders, engineers, and product leads
Tool Product Cost Estimator
Use it for Setting a first realistic COGS target

Quick answer

Manufacturing cost is more than materials and process.

COGS = materials + bought-in parts + process + labour + packaging + scrap + overhead

If one of those terms is missing, the estimate is probably too low and the commercial model built on top of it will be fragile.

Many early hardware cost estimates look neat because they are incomplete. The team prices the obvious physical part, then mistakes that for a product cost. A working estimate needs to include the recurring cost of making the product repeatedly, not just the raw geometry.

Practical rule: cost the product at the level you expect to build and ship it, not the level you first imagine it in CAD.

The seven blocks that usually matter first

  1. Raw materials: resin, metal, fabric, or other base material directly consumed.
  2. Bought-in parts: electronics, fasteners, seals, inserts, packaging inserts, and other purchased components.
  3. Process cost: moulding, machining, printing, cutting, finishing, or external conversion work.
  4. Assembly labour: manual assembly, test steps, inspection, and packing effort.
  5. Packaging: retail packaging, shipping cartons, instructions, labels, and secondary packing.
  6. Scrap and rework: process losses, cosmetic rejects, yield loss, or damaged components.
  7. Overhead: factory burden, quality support, management time, and operating costs absorbed into production.

Where teams usually under-price the product

Bought-in parts are missing. The estimate focuses on the moulded or machined enclosure and forgets the electronics, fasteners, inserts, or accessories.
Assembly is treated as free. Even a short manual build time compounds quickly at scale, especially when reorientation, test, or inspection are required.
Scrap is set to zero. Real processes waste material, parts, or labour. Early models should acknowledge that instead of pretending perfect yield.
Packaging is added too late. Secondary packaging, instructions, labels, and pack-out often arrive after the selling price has already been discussed.

A simple worked example

Imagine a small consumer device with GBP4.80 of material, GBP2.40 of process cost, GBP5.50 of bought-in parts, GBP4.80 of labour, and GBP1.20 of packaging. Before scrap or overhead, the direct build cost is GBP18.70.

Add a 6% scrap allowance and 14% overhead loading and the fully loaded COGS becomes roughly GBP22.33. That is the figure the commercial model should be tested against, not the GBP12 to GBP15 number that a partial estimate might suggest.

Why this matters before pricing

Route-to-market decisions, gross-margin targets, and retail pricing all depend on a credible product cost. If the cost model is weak, the business case will only look healthy because the wrong number is holding it up.

The best sequence is usually:

  1. estimate the build cost bottom-up
  2. check break-even and cash-flow pressure
  3. work backwards from the route to market into target COGS

Build the cost estimate

Model the cost per unit using materials, labour, packaging, scrap, and overhead in one place.

Open Product Cost Estimator

Test commercial viability next

Once the cost looks credible, use break-even and route-to-market tools to see what the business model can support.

Open Break-even Calculator

If the estimate is still vague, do not treat the margin model as truth.

Orion Design can help teams connect product architecture, process choice, and route to market so the first serious cost model is useful enough to make decisions from.

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FAQ

What is usually missing from an early manufacturing cost estimate?

Bought-in parts, packaging, scrap, labour burden, and overhead are among the most common omissions.

Should retail price be set before product cost is understood?

No. Product cost should be understood well enough first that the margin model and route-to-market discussion are based on something credible.

Author

Andrew Hunter

Product design engineer working across manufacturability, sustainability, and hardware commercial decisions in Belfast, Northern Ireland.

Source and Attribution

This article was created by Orion Design as part of a human-first engineering knowledge resource for product teams. Use it to improve an early estimate, then confirm assumptions with suppliers and project-specific data.