Project and service work is billed in different ways, and a business needs its system to handle the way it genuinely bills. This piece is about billing a project in Odoo: the main approaches.
Why there is more than one billing approach
Project and service work is not billed in a single, uniform way. Different work is sold and billed differently, depending on the nature of the work and the agreement with the customer. A system that supported only one billing approach would force a business to work around it for the work it bills differently. Odoo supports the main billing approaches for project work, so a business can bill each project the way it genuinely sold it.
Fixed-price billing
Fixed-price billing is where the project is sold for an agreed, fixed amount. The customer pays the agreed price, regardless of how much time or effort the work genuinely takes. The customer has the certainty of a known price, and the risk of the work taking more or less effort than expected sits with the business. Fixed-price billing suits work where an agreed price can sensibly be set, and the customer wants price certainty.
Time-and-material billing
Time-and-material billing is where the customer is billed for the time and the materials the work genuinely consumes. Rather than a fixed price, the billing reflects the genuine effort: the time spent, recorded through timesheets, and any materials, are what the customer is billed for. Time-and-material billing suits work where the genuine effort cannot sensibly be fixed in advance, and billing for what the work actually takes is the fair and sensible arrangement. It depends on time being genuinely recorded, since the time recorded is what is billed.
Milestone billing
Milestone billing is where the project is billed at defined milestones: as the project reaches defined points of progress, a portion is billed. Rather than billing all at the end, or purely by time, the billing is tied to the project achieving defined milestones. Milestone billing suits longer projects, where billing at points of progress through the project is the sensible arrangement, giving the business income through the project and the customer billing tied to genuine progress.
How Odoo handles project billing
Odoo supports these billing approaches for project work, connected to the Sales side and, for time-and-material, to Timesheets. Because Odoo is a connected system, the project, the work done on it, the time recorded, and the billing are joined: a project can be billed by the approach it was sold under, fixed price, time and material, or milestones, with the billing drawing on the genuine project, the genuine time recorded. The business bills each project as it genuinely sold it, within one connected system.
Match the billing to how the work was sold
The practical principle is to bill a project by the approach that genuinely matches how the work was sold and agreed with the customer. A fixed-price project is billed fixed-price; a time-and-material engagement is billed for the genuine time and materials; a milestone-based project is billed at its milestones. Setting up project billing in Odoo means using, for each project, the billing approach that genuinely fits it. A business may use different approaches for different projects, and Odoo handling all of them is what lets it bill each project genuinely.
The takeaway
Billing a project in Odoo can be done by the main project billing approaches: fixed price, an agreed fixed amount; time and material, billing for the genuine time and materials the work consumes; and milestones, billing at defined points of progress. Odoo supports all three, connected to Sales and, for time and material, to Timesheets, so a project can be billed by the approach it was sold under, drawing on the genuine project and recorded time. Bill each project by the approach that genuinely matches how the work was sold. For how we approach Odoo, see our ERP practice.