Proposal waste, the hidden cost of unqualified buyers in machine manufacturing
Every proposal your engineering team writes for an unqualified buyer is paid for. In hours, in attention, in opportunity cost. Here's how to measure it, and how to stop it.
In 2017, our engineering manager came into a meeting holding a stack of paper. He said: “I want to know how many of these closed.”
The stack was every proposal we’d written that year. We worked it out together. About 30% closed. The rest were paid for by us, in engineering hours, in proposal time, in attention that didn’t go to real customers.
That was the day proposal waste stopped being abstract and became a number.
What proposal waste actually costs
Here’s the formula:
(Proposals sent × hours per proposal × loaded engineering cost per hour) × (1 − close rate)
Most machine manufacturers I work with land somewhere in this range:
- 30–80 proposals per year
- 8–25 engineering hours per proposal (technical specs, customisation, BOMs)
- $80–$150 loaded cost per engineering hour
- 25–35% close rate
Run the math. The answer is almost always between $300K and $1.2M per year in pure engineering cost on proposals that never close. That’s before we count opportunity cost, the real customers who got slower responses because engineering was buried.
Almost nobody in machine manufacturing actually calculates this. They sense it (“we’re stretched”), they complain about it (“the same customers keep tire-kicking”), but they don’t put a number on it.
Why this happens
Three causes, in order of how often I see them:
1. Salespeople feel like they have to send a proposal to keep the deal alive
If qualification is fuzzy, the only way to look serious to a prospect is to write a proposal. So they ask engineering. Engineering writes. The proposal sits in a drawer.
2. Engineering treats every request as equally important
Without a buyer-behavior signal upstream, engineering has no way to triage a “kick the tires” request from a real opportunity. They default to giving everyone a real answer.
3. The CEO is the only one allowed to say no
If qualification authority lives only with the CEO, every proposal request reaches engineering by default, because nobody else has the authority to redirect.
What the fix looks like
Step 1, Measure your real waste. Take last 12 months of proposals. Calculate the cost. Write the number on a whiteboard.
Step 2, Define qualification as one binary question. It can be almost anything reasonable. “Has the buyer confirmed a budget range in writing?” “Has the buyer described the actual application in detail?” Pick one. Make it binary. Make it written.
Step 3, Make engineering’s job depend on it. No qualification answer in writing? No proposal. The salesperson goes back to the buyer first.
This is unpopular in week one. It is also the single highest-leverage change a manufacturer can make.
The number you’ll see in 90 days
For companies that install this discipline correctly, we typically see:
- 30–40% fewer proposals written
- Same or higher total close rate (because you stopped wasting time on tire-kickers)
- Same or higher revenue
- Engineering capacity freed up for the deals that actually matter
The deals that close don’t close because you wrote a longer proposal. They close because the buyer was ready. Stop subsidising the buyers who aren’t.
What this is NOT
This isn’t “qualify harder so you can charge more.” It’s “stop paying for proposals that don’t pay you back.” Same total business. Less waste. More margin.
The proposal isn’t the sales tool you think it is. The conversation that happens before the proposal is.