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Implementation of an Odoo ERP

April 22, 2025 by
Implementation of an Odoo ERP
Laurent BLANCHET

Implementing an ERP like Odoo is a structuring project for an SME. It affects all key functions: accounting, sales, purchasing, production, HR...

But before you get started, one question arises: what will the return on investment (ROI) be?

At Advanced Conseil, we help our clients quantify expected gains, secure investment decisions, and manage profitable deployment.


ROI, a simple indicator… but demanding to construct

The formula for ROI is basic:

ROI = (Benefits - Costs) / Costs

But in the context of an ERP project, the challenge is mainly to evaluate the right elements to integrate :

  • 🔸The total cost of the project 
  • 🔸 The value created through the ERP


Identify the costs of an Odoo project (SaaS mode)

Here are the main items to anticipate:



Initial Costs
  • Implementation cost (consulting, configuration, migration)
  • User training
🔹 Recurring Costs
  • Annual Odoo licenses
  • Maintenance and support
Indirect costs
  • Time spent by your internal teams
  • Change management support

These positions must be carefully estimated to avoid unpleasant surprises.


📊 Estimate the expected gains and benefits

The interest of an ERP is multidimensional. Here are the main levers for creating value:

Process Automation

Less data re-entry = time savings and reduction of errors.

Productivity Gains

Faster access to information, smooth coordination between departments.

Improved Decision-Making

Unified and reliable reporting, available in real-time.

Reduction of fixed costs

Less administrative staff required as the company grows.

Customer Service Improvement

Faster delivery, better tracking, increasing satisfaction rates.



3 tips to ensure the reliability of your ROI calculation

  • Accurately quantify costs : request detailed quotes from your integrator (licenses, configuration, training).
  • Involve the teams : time and quality gains are better estimated by the concerned users.
  • Document use cases : streamlining inventory, reducing unpaid invoices, accelerating billing…


📊 Example of 3-Year ROI Calculation

  • Project costs (Odoo in SaaS)

ItemYear 1Year 2Year 3Total
Implementation50,000 €0 €0 €50,000 €
Training10,000 €5,000 €0 €15,000 €
Licenses7,500 €7,500 €7,500 €22,500 €
Miscellaneous (support, updates, etc.)20,000 €5,000 €5,000 €30,000 €
Total87 500 €17,500 €12 500 €20 500 €
  • Estimated gains

ItemYear 1Year 2Year 3Total
Accounting10,000 €15,000 €20,000 €45,000 €
Operations20,000 €30,000 €35,000 €85,000 €
Other gains10,000 €10,000 €10,000 €30,000 €
Sales growth20,000 €20,000 €20,000 €60,000 €
Total60,000 €75,000 €85,000 €220,000 €

ROI = (220 000 - 120 500) / 120 500 = +83% sur 3 ans




Conclusion: A structuring and profitable investment

A well-managed ERP project generates significant gains, often visible from the first year. The ROI is not limited to savings: it also includes growth, agility, and risk management.

At Advanced Conseil, we help you to :

Build a solid business case, Accurately estimate gains by business, Manage a profitable and scalable ERP project



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