Odoo Projects Consultant in France

Forfait, régie and mixed contracts in Odoo

Odoo decides how a service is invoiced through the product on the sales order line. A forfait stage can be invoiced on milestones that the project manager marks as reached. Régie work can be invoiced on delivered quantity, updated automatically from approved timesheets. Recurring support can be invoiced on a schedule. One order can mix all three.

For French service firms I pay attention to:

• Daily rates. Régie is often sold by the day. Odoo can record time in hours and convert, or sell services in days; the choice affects timesheets and invoices, so I test both with your consultants.
• Stage acceptance. Forfait stages are often invoiced after client acceptance of a deliverable; I record acceptance on the milestone so invoicing follows evidence.
• Expenses. Travel and other costs rebilled to clients through the Expenses app, with the rules agreed in the contract.
• Change requests. Additional work added as new lines so the original forfait stays visible.

For each contract type I prepare a worked example, from signed proposal to invoice, and we run it in a test database. The general method is on my Odoo Projects consultant page.

Deposits, progress billing and situations

Many French contracts include a deposit at signature and intermediate invoices as work progresses. Odoo's Sales app supports down payments either as a fixed sum or a share of the order value, and later invoices subtract what was already billed. Milestone invoicing covers stage-based progress.

Points I check with finance and the expert-comptable:

• how VAT on deposits is shown and when it becomes due, especially for services
• how deposits are deducted when scope changes mid-project
• what wording each intermediate invoice carries
• whether retentions or guarantee holdbacks appear in your contracts

Building and installation companies often bill by progress statements, sometimes called situations de travaux, with cumulative percentages, retentions and sometimes payment to subcontractors handled in specific ways. Odoo can support progress-based invoicing through milestones and down payments, but detailed progress statements with cumulative calculations usually need an add-on or construction-specific software. I raise that during requirements so it does not surface at the first statement.

VAT on services, including timing rules, is your expert-comptable's area. I make sure Odoo is configured to follow their decisions and test the result with real examples. The accounting configuration itself is covered on Odoo Accounting France.

Public sector clients and structured invoices

French public bodies receive supplier invoices electronically through the government's invoicing portal, Chorus Pro, and business-to-business invoicing is moving toward structured formats exchanged through approved platforms. Project-based firms working for local authorities, hospitals or public agencies need both routes to work. Your expert-comptable confirms which obligations apply to you and from when.

From the project side, what matters is complete invoice data:

• the client's identifiers and, for public bodies, the service code and commitment number they require
• the client's own order or engagement reference on each invoice
• a clear link between the invoice and the accepted stage or approved timesheets
• supporting documents attached when the client asks for them

I make these fields part of the project and order setup, so they are captured when the contract is signed rather than chased at invoicing time.

Whether your Odoo version generates Factur-X or other formats, and how it connects to Chorus Pro or an approved platform, depends on the localization, edition and possibly a third-party connector. Confirm this with Odoo or your integrator; the wider design questions are on Odoo consultant France. I test a sample invoice end to end before live use.

Timesheets, field interventions and maintenance contracts

Timesheets are the raw material of régie billing, and the weakest point in many service firms. Odoo offers timers, mobile entry and weekly validation. I design the policy with your managers: level of detail, deadlines, who validates and how non-billable time is recorded. Where a social and economic committee exists, tools that record employee activity are usually discussed with it; your HR lead or legal advisor decides what is needed, and I describe what each app records.

Installers and maintenance companies have a second flow: field interventions. Odoo's Field Service app, historically part of Enterprise, creates intervention tasks with worksheets, parts used, time spent and the customer's signature, and the closed intervention feeds the invoice. I design:

• intervention types such as installation, preventive visit and breakdown repair
• worksheets with the checks technicians complete, written in French by your service lead
• parts taken from a van stock location so inventory stays accurate
• billing per intervention, by time and materials, or covered by a contract

Maintenance contracts can be invoiced through Odoo's subscription features, also historically Enterprise. Confirm both apps with Odoo or your integrator. The general method for service businesses is on ERP for service management.

Subcontractors, margins and when Odoo is not enough

French service firms frequently work with freelancers and subcontractors on client projects. In Odoo, their invoices can be linked to projects through purchase orders or vendor bills with analytic distribution, so project margins include outside costs. I agree with finance how freelancer costs are allocated and whether their time is recorded in Odoo or only invoiced.

Margin reporting combines:

• revenue invoiced and still to invoice
• internal time valued at agreed cost rates
• subcontractor and purchase costs
• rebillable and non-rebillable expenses

Work in progress at period end, meaning time spent but not yet invoiced, is treated as your expert-comptable decides. I make sure Odoo can report the figures they need.

Odoo Projects is not the answer for every French project business. Large engineering programs needing earned value or complex resource levelling may need a dedicated project tool. Building contractors with detailed progress statements may need construction software. A small agency with simple billing may find Zoho Projects in France lighter. For costing questions see ERP for project costing, and for platform selection, my ERP consultant France page and the France hub.