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GUIDE · UPDATED JULY 2026

ERP for a 20-person manufacturing company: what you actually need

By the Impromatrix consulting team – Odoo since 2020, ERP since 2011

ERP vendors will happily sell a small factory the same stack they sell a corporation. You need seven modules, honest data migration, and a partner who says no. Here's the whole picture – scope, budget, timeline, pitfalls.

Need now vs add later

The seven that matter from day one
  • Sales – quotes and order confirmations from one price list
  • Purchasing – POs triggered by real demand, not gut feel
  • Inventory – live stock, locations, traceability where required
  • Manufacturing – bills of materials, work orders, job costing
  • Invoicing / accounting – or a clean export to your accountant
  • Contacts/CRM – one customer record everything hangs on
  • Reporting – margin per order, stock value, open jobs
Skip at the start – add once the core runs
  • Advanced scheduling / APS – a whiteboard beats a bad algorithm at this size
  • Quality module – start with checklists on work orders
  • PLM – version your BoMs first, formalise later
  • Shop-floor tablets – month two, not day one
  • Barcode everywhere – pilot one warehouse process first
  • Custom dashboards – you don't know your KPIs until you run standard ones

Realistic first-year budget (20 users, 2026)

Item
Odoo Community
Typical proprietary SME ERP
Implementation (7 modules, migration, training)
20,000 – 45,000 €
30,000 – 80,000 €
Licences / year
0 €
8,000 – 20,000 €
Hosting + support / year
1,500 – 3,000 €
often bundled, opaque

Ranges reflect EU consulting rates and typical scope; your data quality and customisation appetite move the number. Odoo Enterprise adds 29.90–37.40 € per user per month if its exclusive modules earn it – edition comparison here.

Do we even need an ERP at 20 people?

The trigger isn't headcount – it's re-typing. When orders, stock and production live in separate files and someone manually copies between them, you're paying an invisible clerk and getting planning errors for free: missed deliveries, surprise stockouts, jobs whose real cost nobody knows. When those errors cost more per year than a system, the answer is yes.

Why do small manufacturers pick Odoo?

Because the manufacturing module is genuinely usable at this scale – BoMs, work orders, job costing without an army of consultants – and because Community edition removes per-user licences entirely, which matters when every hire adds a seat. The trade-off: you need a competent partner, since there's no vendor holding your hand.

What's the most common project killer?

Trying to reproduce the old chaos in the new system – custom fields for every habit, imports of ten years of dirty history, exceptions coded for processes that should simply change. The second killer: nobody owns data cleanup. Products and BoMs need one accountable person on your side, not ours.

How do we choose between vendors?

Make each candidate demo your flow – one real product, its BoM, a quote-to-invoice pass – not their standard pitch. Ask what they'd cut from your requirements list; a partner who deletes scope is worth more than one who prices everything. We run this selection as a paid, vendor-neutral engagement. ERP selection consulting →

Planning your factory's first ERP?

45 free minutes – bring one product and its BoM, we'll sketch the scope with you.

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