Professional services firms in Australia — consultancies, agencies, engineering practices, architecture studios, accounting firms, IT services — share a problem Xero cannot solve. They sell time, but the system that runs the business has no idea where the time goes. Odoo joins pipeline, project costing, timesheets, resourcing and invoicing into one stack, which is why we end up here so often.
We’re a Perth-based Odoo consultancy and most of our professional services work starts the same way. The firm has scaled to twenty or thirty people on Xero plus a project tool plus a spreadsheet plus a separate CRM. Month-end takes two days. Utilisation is a guess. Three people argue about which project is profitable. The rest of this piece is the honest playbook for moving off that stack.
Where Xero or MYOB stops working for a growing service firm
Xero and MYOB are excellent ledgers. They were never meant to be operational systems. The friction points are predictable.
You cannot answer “is this project actually profitable” without exporting timesheets to Excel and reconciling against invoices manually. The pipeline lives in a separate CRM, so committed revenue and resource forecasts never meet. Recurring retainers are managed by a recurring invoice plus a Google Sheet that tracks what was actually done. Quotes go out of one tool, become projects in another, get invoiced from a third. Bank feeds reconcile in Xero, but the cost of delivery sits outside it.
The breaking point we see most often is around twelve to fifteen billable staff. At that headcount you can no longer hold the operational picture in one person’s head, and every system seam costs hours every week. That’s where a single platform starts paying back. If you’re earlier than that, see our take on Odoo vs Xero before changing anything.
The Odoo modules that actually matter for professional services
A professional services Odoo stack is narrower than people think. You do not need Manufacturing or Field Service. The modules that do the work are the operational core.
Project — the costing spine
Every billable hour, expense, purchase and milestone hangs off a project. Project costs roll up in real time: labour at the consultant’s loaded rate, third-party costs at actual, expenses on the corporate card via the Expenses app. The Profitability report shows planned versus actual against quote on every job. For firms used to monthly profitability reports built in Excel, seeing it live is the moment Odoo justifies itself.
Timesheets and approvals
Staff log time against project tasks on the desktop, mobile app or via the Slack and Teams integrations. Time entries route through a manager approval workflow, then become billable hours, internal time or non-billable. The same entries feed Australian payroll allowances where you need to track award hours separately — though for modern award interpretation we still pair Odoo with Employment Hero or KeyPay, as covered in Odoo payroll for Australian businesses.
Sales, CRM and the pipeline
CRM tracks the opportunities. Sales converts a won opportunity into a quote in seconds, the quote becomes a Sales Order, and the Sales Order spawns the project. Forecasted revenue from the CRM stage probability feeds the cash forecast directly. No more spreadsheet reconciliations between sales and finance.
Invoicing — fixed price, T&M, milestones, retainers
Odoo handles the four billing models a service firm actually uses, on the same project if needed. Fixed price invoices when the milestone hits. Time-and-materials invoices draft automatically from approved timesheets each week or month. Milestone-based billing on retainer contracts. Subscriptions for recurring monthly support. All of them generate GST-correct invoices and can lodge over the Peppol network to government clients who demand it.
Utilisation and resourcing — the real productivity lever
This is the section that ends up boring on most ERP brochures and matters more than the rest combined.
A 25-person consultancy at 60% utilisation has roughly the same revenue as a 22-person consultancy at 68% utilisation, but with three more salaries and three more sets of overheads. Lifting utilisation from 60% to 65% on a A$5m firm is roughly A$250,000 of margin — which is more than the entire Odoo project costs in year one.
Odoo’s Planning module gives a forward-looking view of who is booked on what, where the gaps are, and who is over-allocated. Combined with the Project profitability report and timesheet data, it tells you the truth that Xero cannot: which engagements drag the firm down and which roles you need to hire next. Most clients we work with discover one or two engagements that have been quietly subsidised by the rest of the business for years. That conversation, alone, pays for the implementation.
Our rule of thumb: a service firm that measures utilisation weekly will lift it by three to seven points within six months. A firm that does not measure it never moves.
Retainers and recurring billing for Australian service firms
If you sell ongoing retainers, monthly support, or any flavour of recurring service, this is where Odoo earns its keep against Xero plus a spreadsheet.
Odoo’s Subscriptions module manages the recurring contract — start date, end date, escalation clauses, suspension, upgrade and downgrade. Timesheets log the work that consumes the retainer hours. The Project shows hours used versus hours sold. When the retainer is depleted, Odoo can either alert the account manager or auto-bill the overage at an agreed rate. Direct debits run via ABA file generation against your ANZ, NAB, CBA or Westpac account, or via Stripe and GoCardless for card payments.
For service firms whose business model is built around recurring engagements — agencies, MSPs, accounting practices, equipment-as-a-service — our recurring service jobs playbook is the deeper read on how to set this up so the hours, the invoice and the GL all stay in sync.
Australian compliance for service firms
The compliance picture for professional services is narrower than for manufacturing or construction, but the same ATO obligations apply.
GST and BAS
Service revenue is GST-inclusive in almost every case. Odoo’s Australian localisation calculates GST at the line level, posts it to the GST clearing account, and produces BAS Worksheet (Type A) data ready for ATO lodgement. We typically configure BAS quarterly with monthly IAS where required.
STP Phase 2
For firms with employees, Single Touch Payroll Phase 2 reports each pay run to the ATO in real time. Odoo’s native Australian payroll covers the basics. For firms with modern award complexity — most professional services firms do not have this — we pair it with Employment Hero. The compliance overlay sits in our compliance section.
Peppol e-invoicing
Government clients increasingly require Peppol BIS Billing 3.0 invoices. Odoo ships native Peppol support against the Australian ATO network. For agencies and consultancies bidding for federal or state work, this matters. It removed three to five days of “is the invoice in the system yet” follow-up for one of our clients.
TFN, super, PAYG
Standard ATO obligations are handled through the payroll flow. Super contributions route via SuperStream-compliant providers. PAYG withholding posts to the appropriate liability accounts. Nothing exotic.
A Perth consultancy we worked with
Names changed; situation real. A Perth-based engineering consultancy at roughly fifty staff came to us running Xero, WorkflowMax for projects, HubSpot for CRM and a Google Sheet for resourcing. The principal told us in the first meeting that he was sure two of his project leads were “losing money on every job” but he could not prove it.
We migrated them onto Odoo over four months. Project, Timesheets, Sales, CRM, Accounting and Planning. The Xero data came across at financial year end to keep the BAS history clean. Three months after go-live, the Profitability report showed that one of the project leads was actually the most profitable in the firm — the other had two engagements with scope that had quietly expanded by 40% without re-quoting. They re-quoted both contracts. The recovered revenue inside eight months was more than three times what the Odoo project cost.
That story is not unusual. The firm that runs blind cannot fix what it cannot see.
What an Odoo implementation looks like for a service firm
The phasing for professional services is shorter than for manufacturing or construction. There is no shop floor, no warehouse, no field crew.
A typical fifteen-to-fifty-person firm runs twelve to twenty weeks. Phase one covers discovery, chart of accounts and the Australian localisation. Phase two builds Project, Sales and CRM. Phase three layers Timesheets, Expenses and Invoicing. Phase four migrates Xero opening balances, runs parallel for two BAS cycles and cuts over at a quarter or financial year boundary. We’ve written the longer version in Odoo implementation timeline in Australia.
Budget runs A$25,000 to A$70,000 for most service firms in this band, all in. Licences add roughly A$34 per active user per month on the Custom plan. The full cost breakdown including hidden costs sits in Odoo implementation cost in Australia. If you’re moving from Xero, the cleanest path is documented in Xero to Odoo migration in Australia.
Where service firms get this wrong is scope. Trying to launch every module on day one creates a fragile cutover and a team that resents the new system. Sequence it. Project, Sales and Accounting first. Timesheets two weeks later. Subscriptions, Planning and any custom workflow after the firm has lived with the core for a quarter. That’s the heart of our implementation method.
A practical next step
If you are running a growing Australian professional services firm and feel the seams showing — month-end taking too long, utilisation a mystery, retainers managed in a spreadsheet, profitability invisible — the diagnostic is short. We sit with you for an hour, map your current stack, and tell you honestly whether Odoo is the right call or whether you should stay where you are for another year. No deck. No upsell. The contact form on the main page is the place to start, or read the recurring service jobs playbook first if retainers are the main driver.
Frequently asked.
Is Odoo used in Australia?
Yes. Odoo has a Sydney office, accredited partners across Perth, Melbourne, Brisbane and Adelaide, and an Australian localisation covering GST, BAS, STP Phase 2, Peppol BIS Billing 3.0, ABA payment files and TPAR. It hosts in AWS Sydney and Azure Australia regions, which matters for professional services firms with data-residency obligations to government clients.
Do big companies use Odoo?
Yes. Odoo runs in firms from five users to several thousand, including listed companies and federal agencies. For Australian professional services, most of our work sits in the 10–200 user band — consultancies, agencies, engineering practices and accounting firms. Above 500 users the comparison shifts to NetSuite or Dynamics 365; below that, Odoo is usually the right fit.
What is the difference between Odoo and Xero Australia?
Xero is an accounting ledger. Odoo is a full operational platform with accounting inside it. Xero handles GST, BAS, bank feeds and invoicing well. Odoo adds Project costing, Timesheets, CRM, Sales, Subscriptions and Planning — the modules a service firm needs to measure utilisation, profitability and pipeline alongside the books.
What is the best accounting software for small business in Australia?
For sole traders and sub-five-person firms, Xero or MYOB. For service firms past ten billable staff who need project costing, timesheets and resourcing in one place, Odoo. The honest answer is that accounting software is the wrong frame once you're billing time at scale — you need an operational platform with accounting in it.
Which is better, Zoho or Odoo?
Both are integrated business suites, both work in Australia. Odoo has stronger native Australian localisation (BAS, STP Phase 2, Peppol BIS 3.0, ABA, TPAR) and a deeper project costing and manufacturing stack. Zoho's CRM and email marketing are arguably sharper. For Australian professional services firms needing operational depth, Odoo is the more common choice.