AI for quotes: how it works in practice
How long does it take to prepare a quote?
In many manufacturing SMEs, preparing a quote takes 2 to 8 hours. Finding raw material costs, calculating processing hours, estimating margins, writing the document. Often the owner does it personally, in the evening or on weekends.
The problem isn't just time: it's quality. A rushed quote contains errors, underestimates costs, forgets important items. A quote that arrives late loses the client.
AI can reduce preparation time by 50-70%, while improving accuracy.
How does it work in practice?
The example: a precision machining company
Scenario: a company with 15 employees producing custom mechanical components. Every week it receives 5-10 quote requests. Each quote takes an average of 3 hours.
Weekly time dedicated to quotes: 15-30 hours.
The traditional workflow
- The client sends specifications (technical drawing, quantity, timeline)
- The technical team evaluates feasibility and estimates processing hours
- Administration looks up raw material costs in the management system
- The full cost of the job is calculated
- The desired margin is applied
- The document is written with terms, conditions, and timelines
- It's sent to the client
Each step takes time, and between steps there are delays. From receiving the request to sending the quote, 3-5 days can pass.
The workflow with AI
AI doesn't replace any step — it accelerates them.
| Phase | Without AI | With AI |
|---|---|---|
| Estimate processing hours | 45 min (manually consulting past jobs) | 10 min (AI analyzes similar jobs) |
| Look up material costs | 30 min (searching the management system) | 5 min (AI extracts the data) |
| Calculate full cost and margin | 20 min (spreadsheet) | 5 min (automatic calculation) |
| Write the document | 40 min (copy-paste and adapt) | 10 min (AI generates draft) |
| Review and send | 15 min | 15 min (unchanged) |
| Total | 2h 30min | 45 min |
The savings are about 1 hour and 45 minutes per quote. With 8 quotes per week, that's 14 hours saved — nearly 2 working days.
What tools are needed?
No need for software costing hundreds of thousands. The concrete options:
Level 1: generative AI + spreadsheet
- Tools: ChatGPT or Claude + Excel/Google Sheets
- How it works: upload the spreadsheet with job history and cost data. Ask the AI to estimate the cost of a new job based on client specifications
- Cost: €20-50 per month for the AI subscription
- Setup time: 1-2 days
Level 2: automation with connectors
- Tools: Make or Zapier + AI + management system
- How it works: the workflow is automated: client request arrives via email → Make extracts the data → AI calculates the estimate → generates the draft → sends it for approval
- Cost: €50-150 per month
- Setup time: 1-2 weeks
Level 3: custom assistant
- Tools: custom AI with access to the management system and job history
- How it works: an AI assistant trained on company-specific data — costs, lead times, suppliers, and past jobs
- Cost: €500-2,000 for setup + €100-300 per month
- Setup time: 1-2 months
For most SMEs, Level 1 is the right starting point. Move to higher levels once the process is established.
The impact on margins
The benefit isn't just time saved. A more accurate quote protects margins:
- Fewer calculation errors — AI doesn't forget cost items
- Accessible history — avoids underestimating based on memory alone
- Consistency — all quotes follow the same cost calculation logic
- Speed — a quote that arrives in 24 hours instead of 5 days is more likely to be accepted
If the average contribution margin is 35% and AI prevents just 2-3 underestimation errors per year worth €5,000 each, the return on investment is immediate.
Mistakes to avoid
- Blindly trusting AI — AI is an assistant, not a decision-maker. Every quote must be reviewed by someone who knows the work
- Starting at Level 3 — start simple, with the first step of automation, and move up only when needed
- Not updating the data — AI is only as accurate as the data it receives. If cost data is 6 months old, the quote will be wrong too
- Ignoring exceptions — special jobs, clients with unique terms, new processes always require human judgment
Where to start tomorrow
The concrete path:
- Organize the history — gather the last 50 quotes into a structured spreadsheet: job type, materials, hours, cost, price, margin
- Test with 3 quotes — use ChatGPT or Claude to estimate the cost of 3 real jobs and compare with manually prepared quotes
- Measure the difference — how much time is saved? How accurate is the estimate?
- Decide the next step — if the test works, integrate AI into the daily workflow
Those who want to explore other AI applications in SMEs will find ideas in the dedicated article. And those still relying on spreadsheets for weekly reports might start there for their first automation step.
The AI in business guide describes the complete path to adopting AI in an SME, from first experiments to process integration.
Want to understand how AI can speed up quoting in your company? Get in touch for a no-commitment conversation, or learn about our strategic consulting.