What NRE covers
Non-recurring engineering is the work that is done once to get a product ready for production. Depending on the supplier and the product, an NRE line can include:
- Engineering changes to adapt an existing ODM design to your requirements
- Design for manufacturing (DFM) work on enclosures and PCB layout
- Test development: test plans, programs and the fixtures used on the production line
- Prototype builds and engineering samples
- Documentation such as work instructions and inspection criteria
- Pre-certification support and the engineering time spent fixing compliance failures
Tooling, such as injection molds and die-cut tools, is usually quoted separately because it is physical equipment with its own ownership and maintenance terms.
Why NRE is easy to misread
Two quotes with the same unit price can carry very different NRE. One supplier may quote a low NRE and recover the engineering cost in the unit price. Another may charge the engineering upfront and offer a lower unit price. Comparing unit prices alone hides this.
The other common gap is scope. A single NRE figure says little unless you know what it includes: how many design iterations, how many prototype rounds, which tests and which certifications.
How to compare NRE across suppliers
Ask each supplier to break NRE into the activities it pays for, with the assumptions behind each one. Then compare like with like:
- List the activities each quote includes and mark the gaps.
- Note what happens if an activity needs a second round.
- Check whether NRE is paid upfront, at milestones or amortized into the unit price.
- Add NRE and tooling to the total program cost at your realistic volume, not the supplier’s.
The supplier quote comparison calculator adds one-off costs to the unit price at the volume you enter, so the comparison reflects your program rather than the headline price.
Questions to ask before you agree NRE
- What exactly is included, and what would be charged as extra engineering?
- Which deliverables do we receive, and who owns them?
- Is any of this NRE refundable or credited against production orders?
- What triggers a change order, and how is it priced?
Frequently asked questions
Is NRE the same as tooling cost?
No. Tooling is the physical equipment, such as injection molds, that a supplier builds for your parts. NRE is engineering time and one-off work such as design changes, test development and documentation. Many quotes list them separately; some combine them, so ask for the split.
Can NRE be amortized into the unit price?
Often, yes. A supplier may spread NRE across an agreed volume and add it to the unit price. That lowers the upfront payment but raises the unit price, and it raises the question of what happens if you never reach that volume. Agree it in writing.
Who owns the work paid for through NRE?
It depends on the agreement. Ownership of designs, firmware, test fixtures and documentation should be stated in the contract before work starts, especially when working with an ODM that brings its own existing design.