What actually reduces product cost
Lasting product cost reduction comes from changing how the product is designed, made and bought, not from asking everyone for 5% less. Flat percentage cuts squeeze suppliers and teams for a year, then the cost creeps back, and often something the customer valued goes with it.
What works is the same in every industry: find out where the cost really sits, compare it with what each part of the product has to do, and change the design, the process or the sourcing where the two don't match. That is the method of value analysis and value engineering, and the ideas below are its toolbox.
The six areas where savings come from
Typical savings ranges below are the practitioner ranges used across this site; your results depend on the product and what has been done before.
| Area | Strongest ideas | Typical saving |
|---|---|---|
| Design | Part-count reduction, design for manufacture and assembly (DFMA), material substitution, tolerance review | DFMA: 10–30% of assembly time; material substitution: 10–40% of part cost |
| Materials | Grade optimisation, near-net-shape blanks, nesting and yield | Near-net shape: 20–50% of machining |
| Manufacturing | Process substitution, automation, cycle time and OEE, first-pass yield | Process substitution: 15–40% of conversion cost |
| Sourcing | Should-cost negotiation, linear performance pricing, supplier VAVE workshops | Should-cost: 5–15% on quoted price |
| Packaging and logistics | Packaging spec, returnable packs, fuller loads | Packaging spec: 10–30% of packaging cost |
| Complexity | Fewer variants, more common parts, designing out warranty failures | Variant cuts: 2–5% of total cost of goods |
All 36 ideas, with where each works best and a tool that picks your top five: 36 product cost reduction ideas.
How to find the ideas for your product
- Get a cost you can trust. A costed parts list, checked by finance, ranked by cost. Usually about 20% of the parts carry 80% of the cost.
- Build a should-cost for the biggest parts: material, process time, labour, scrap, overhead and a fair margin. The gap to the quoted price shows where you're overpaying. Free should-cost template.
- Take a competitor apart. A teardown shows what a function can cost when someone else designs it. How to run a teardown.
- Analyse functions, not parts. Ask what each part does and what that job should cost. The biggest savings are usually in functions that cost far more than they're worth, not in the most expensive parts. How to do function analysis.
- Run a workshop with design, manufacturing, purchasing, quality and finance, so ideas are judged by everyone who has to make them work. 12 idea techniques.
How much can you expect to save?
Practitioners commonly report that a first proper round on a product that has never had one finds 8–15% of its cost, and that companies which keep going save 3–5% a year after that. These are experience figures, not a published statistic.
Two rules keep the numbers honest. Count a saving only when the change is in production and finance has checked it against a fixed starting cost. And subtract one-time costs (new tools, testing, re-approval): an idea that saves 30p a unit but costs £50,000 to make needs about 167,000 units just to break even.
Estimate the saving for your own product range: the savings estimator.
A 30-day plan for your first product
- Week 1: pick one high-volume product with a few years of sales left, agree the starting cost with finance and name a sponsor.
- Week 2: build the costed parts list, a should-cost for the top five parts and, if you can, a teardown of the main rival.
- Week 3: a two- or three-day workshop: functions, ideas, screening and scoring.
- Week 4: business cases for the top ideas, a decision meeting, and an owner and date for every idea.
Free templates for each week: programme charter, teardown capture sheet, workshop agenda and savings funnel tracker.
Frequently asked questions
What is the best way to reduce product cost?
Find where the cost sits with a costed parts list and should-cost, compare each function's cost with its worth, and change the design, process or sourcing where they don't match. Flat percentage cuts rarely last.
How can I reduce cost without reducing quality?
Start from what the product must do. Keep or improve the functions customers pay for, and take cost out of everything else. Removing parts and joints often improves quality as well.
What is a should-cost?
An estimate of what a part ought to cost, built up from material, process time, labour, scrap, overhead and a fair margin. It turns a supplier negotiation from price into facts.
How much cost reduction is realistic?
Practitioners commonly report 8–15% from a first proper round on a product that has never had one, then 3–5% a year from an ongoing programme.
What is DFMA?
Design for manufacture and assembly: designing parts so they're cheap to make and quick to put together, mainly by using fewer parts, simpler shapes and snap-fits instead of screws.