Role · Commercial / Engineering
Estimator / Cost Engineer
Works out what a job will cost the company to make, before anyone agrees to make it. Sits between engineering and sales and is trusted by neither entirely, which is roughly the correct position.
Also called: Cost engineer · Cost estimator · Pricing analyst · Applications engineer (in some firms)
- Sits in
- Commercial / Engineering
- Reports to
- Estimating manager, commercial manager, or in smaller firms the managing director
- Owns these steps
- Costing the job
- Measured on
- Gross Margin, Quote Conversion Rate
What the job actually is
An estimator turns a drawing and a quantity into a number that the business can rely on. That means reading the engineering, working out how the part would actually be made in this factory on these machines, applying rates that reflect what things really cost, and stating plainly what the number depends on.
The role exists at a junction. Engineering knows how the part is made but not what it costs. Sales knows what the market will pay but not what the company can afford to charge. The estimator is the only person who has to hold both, and the only person with no incentive to be optimistic — which is why estimating usually sits outside sales, and why it stops working when it does not.
Most of the skill is not arithmetic. It is knowing which assumptions matter, which of last month's actuals to believe, and when to say that the enquiry as written cannot be priced.
Responsibilities
- Build cost breakdowns for new and repeat work: material, labour, machine time, setup, tooling, outside processes, overhead recovery and yield.
- Establish the routing for parts that have never been made, by analogy with similar work.
- Obtain and validate material and subcontract prices, with their validity periods.
- State the assumptions every price depends on, and hand them to sales in writing.
- Recommend a price and margin, distinct from the cost.
- Maintain the rate set — machine hour rates, labour rates, overhead recovery — with finance.
- Compare estimates against actuals on completed jobs and correct the standards that are consistently wrong.
- Support negotiation by producing rapid, honest requotes when quantity, specification or terms move.
- Contribute to bid/no-bid decisions by flagging enquiries that cannot be met or cannot be priced.
A typical day
A realistic one, including the interruptions.
- 08:00Review the enquiry queue: what arrived overnight, what is due today, what is blocked waiting on a customer answer.
- 08:30Chase two outstanding subcontract quotes for heat treatment on a job due Thursday.
- 09:00Build the routing for a new machined housing — the deepest work of the day, and the part most likely to be interrupted.
- 10:30Requote an existing part at a different batch size after the customer changed their call-off pattern.
- 11:15Call the material supplier about bar stock availability; the 3m length assumed in the estimate is on 6-week lead time.
- 12:30Quote review meeting with sales on three jobs going out this week. Explain why one price rose 14% on a repeat part.
- 14:00Estimate-versus-actual review on last month's completed jobs. Two operations are consistently 30% over standard.
- 15:00Walk to the shop floor to watch the setup on a job whose setup time nobody believes.
- 15:45Update the routing standards from the morning's findings.
- 16:30Finish the housing estimate, write the assumption block, and hand it to sales with a note on the two things that would invalidate it.
Documents they handle
- Request for Quotation (RFQ)The buyer's request for a price against a defined specification and quantity. Every field on it is an instruction to the estimator, and the ones that are missing cost the most.
- QuotationThe supplier's formal offer: this specification, this price, these terms, valid until this date. In most cases it becomes a contract the moment the customer accepts it, without anyone signing anything.
Systems they work in
- Estimating or should-cost model
- ERP or MRP — routings, rates, historic actuals
- CAD viewer for drawings and models
- Supplier price lists and subcontract quotations
- Shop-floor data collection, for what actually happened
Skills that matter
- Reading engineering drawings, including tolerances, GD&T and surface finish callouts
- Manufacturing process knowledge — enough to know how a part would really be made here
- Cost modelling and the discipline of separating cost from price
- Judgement about which assumptions carry the risk
- Numeracy under time pressure, and the confidence to say a price is not ready
- Negotiating with subcontractors for real prices rather than indications
- Writing clearly enough that the assumptions survive the journey to the quotation
Who they work with
- Account Manager — What the price needs to be, what it can be, and which assumptions the customer must be told about.
- Inside Sales / Sales Coordinator — Enquiry completeness, deadlines and clarifications outstanding with the customer.
- Production Planner — Realistic cycle times, capacity, and whether the quoted lead time is achievable.
- Purchasing — Material prices, validity periods and subcontract quotations.
- Finance — Machine hour rates, labour rates and overhead recovery rules.
- Engineering — Manufacturability, tolerance interpretation and whether a feature is as hard as it looks.
- Shop floor supervisors — What setups and cycles actually take, as opposed to what the standard says.
Where the job leads
- Estimator → Senior estimator → Estimating manager
- Estimator → Commercial manager → Commercial director
- Estimator → Cost engineer in a larger organisation, often on programme or should-cost work
- Estimator → Operations, where the routing knowledge transfers directly to planning
- Estimator → Technical sales or applications engineering, for those who enjoy the customer side
Questions this role gets asked at interview
Useful from either side of the table.
- 01Walk me through how you would cost a machined part you have never seen before.
- 02What is the difference between cost and price, and why does it matter that they are separate numbers?
- 03How do you handle an enquiry where the drawing has no revision and the quantity is given as an annual volume?
- 04A repeat part comes back at a quarter of the previous batch size. What happens to the price and why?
- 05How do you decide how much contingency to add, and where do you show it?
- 06Describe a time your estimate was significantly wrong. How did you find out, and what changed as a result?
- 07How would you recover overhead on a job that runs mostly on an old, fully depreciated machine?
- 08What would you do if sales asked you to reduce an estimate to win an order?
Common questions
›What is the difference between an estimator and a cost engineer?
Largely sector and scope. 'Estimator' is more common in subcontract manufacturing, construction and fabrication, working enquiry by enquiry. 'Cost engineer' is more common in larger organisations and programme environments, often doing should-cost analysis, supplier cost challenge and life-of-programme modelling rather than individual quotes. The core skill — building a defensible cost from an engineering definition — is the same.
›Does an estimator need to have worked on the shop floor?
It is not essential and it is a large advantage. The estimator's persistent risk is pricing how a part should be made rather than how it will be made here, on these machines, by these people. Time on the floor is the cheapest correction for that, which is why good estimators keep going back even after years in the office.
›Should estimating report to sales?
Preferably not. The estimator's value depends on having no incentive to make the number smaller, and reporting into the function whose targets depend on winning work erodes that quietly rather than dramatically. Reporting to commercial, finance or operations all work; the point is independence from the win.
›How is an estimator measured?
Badly, in most companies — usually on quote turnaround and win rate, both of which reward optimism. The measure that matters is estimate accuracy: how quoted cost compares to actual cost on completed jobs, reviewed as a pattern rather than job by job. Win rate belongs to sales, and turnaround belongs to the process.
›Is estimating being automated?
The arithmetic largely is, and feature-recognition tools can propose routings from a model for common processes. What has not automated is the judgement: which assumptions carry the risk, whether the standard times are believable, and whether this enquiry can be priced at all. The tooling has made estimators faster rather than fewer.
Tools this role uses
Built for exactly this job — downloadable, self-contained, and no account required.
- Should-Cost & Programme EstimateProBuild a manufactured part's cost from first principles, then take it to programme scale with learning curves, escalation to then-year money, three-point risk and a confidence-based contingency. Crawford and Wright theory, correlated risk roll-up and AACE estimate classes. Runs entirely in your brows
- Material Weight & Cost CalculatorFreeCalculate the weight and cost of metal and plastic stock from profile dimensions. Runs entirely in your browser. No installation, no account, no upload.
- CNC Quote BuilderFreeBuild machining quotes with quantity breaks: operations, material, outsourcing, tooling amortization, overhead and margin. Runs entirely in your browser. No installation, no account, no upload.
- Break-even & Pricing CalculatorFreeWork out break-even volume, break-even revenue, contribution margin, margin of safety and the price you need to hit a target profit. Handles fixed amounts and percentage-of-price costs, compares three scenarios and prints an investor-ready report. Runs entirely in your browser. No installation, no a
Reviewed 2026-08-15. Job titles, reporting lines and scope vary widely between companies — this describes the work rather than any one organisation’s job description.