How to estimate the cost of developing and manufacturing a physical product
Estimating the cost of a physical product is difficult but not impossible. Here are the main cost areas to understand before you start.
“How much will it cost?” is the first question most founders ask, and the honest answer is “it depends”. That’s frustrating, but it doesn’t have to be unhelpful. The way to get a useful estimate is to understand the different cost areas and what drives each one.
Development costs (one-off)
- Product design and development
- Engineering and testing
- Prototyping, often several rounds
- Certification and compliance, where needed
Complexity is the main driver. A simple mechanical product and a connected electronic device with software are entirely different propositions.
Tooling and set-up costs (one-off) Depending on the process, you may need moulds, dies, jigs, fixtures or test equipment. Tooling can be a significant part of the up-front investment, and its cost depends on the number of parts, their complexity and the volume you need.
Unit costs (per product)
- Materials and components
- Manufacturing and assembly labour
- Finishing and packaging
- Quality control
- Factory margin
Unit cost is heavily influenced by design decisions: the number of parts, the materials, the process and the tolerances. This is why DFM matters so much.
Logistics and landed costs Freight, insurance, duties, taxes and warehousing all add to the cost of getting the product to its customer. These are often underestimated.
Working capital You’ll typically need to pay for stock before you sell it. Minimum order quantities and lead times affect how much cash you need to tie up, and for how long.
Ongoing costs Product support, warranty, returns, inventory management and periodic re-orders.
Some practical tips:
- Start with a target selling price and work backwards to a target unit cost.
- Get manufacturing input early. A design that’s cheap to develop but expensive to make is a poor bargain.
- Build in contingency. Something will change.
- Ask for costs to be broken down so you can see what’s driving them.
An early conversation with a partner who understands both development and manufacturing can give you a much more grounded view than a spreadsheet alone. If you’d like to talk through the numbers for your product, get in touch.