Odoo vs SAP Business One is the comparison Australian SMEs reach when they outgrow Xero or MYOB and start looking at proper ERP. Both are mid-market platforms covering accounting, inventory, sales, purchasing and manufacturing. The short answer for most Australian businesses under 100 users: Odoo wins on cost, customisation speed and Australian localisation; SAP Business One wins where deep process manufacturing or an existing SAP corporate parent makes it the obvious choice.
We’re a Perth-based Odoo consultancy and we’ve sat on the buyer’s side of this comparison dozens of times. The rest of this article is the honest breakdown — not a brochure for either platform.
Odoo vs SAP Business One: side-by-side for Australian businesses
| Dimension | Odoo (Custom) | SAP Business One |
|---|---|---|
| Licence model | Per active internal user, billed annually | Per named user (Professional or Limited), perpetual or subscription |
| Indicative cost, 25 users | ~A$7,000/year subscription | ~A$70,000+ year-one licence, ongoing maintenance |
| Australian localisation | Native GST, BAS, STP Phase 2, Peppol BIS 3.0, ABA, TPAR | Partner-supplied; quality varies |
| Customisation tool | Studio (no-code) plus Python API | SAP B1 Studio, UDFs, SDK; partner-led |
| Hosting | Odoo.sh, Odoo Online (AWS Sydney/Azure AU), on-premise | Cloud (partner-hosted) or on-premise; HANA or SQL Server |
| Implementation time, SME | 8–20 weeks typical | 16–32 weeks typical |
| Best fit in Australia | 5–500 users, multi-industry, customisation-led | 20–200 users, discrete manufacturing, SAP-aligned supply chains |
The table compresses what the rest of this piece unpacks. The interesting decisions live in the licensing model, the Australian compliance fit, and the partner ecosystem — not the feature checklist.
How Odoo’s per-active-user model beats SAP B1’s per-named-user pricing
This is the cost gap most buyers miss until renewal year three.
SAP Business One charges per named user, with two tiers: Professional (full functionality, around A$3,200 perpetual licence plus 17% annual maintenance, or roughly A$95 per user per month on subscription) and Limited (read and approve only, around A$1,600 perpetual plus maintenance). Each named user is a single specific human and cannot be shared.
Odoo Custom charges around A$23.60 per active internal user per month, billed annually in AUD. Customers and suppliers using the portal are free. The fee is per active login, not per concurrent session.
What that looks like at 25 users
A 25-user SAP B1 deployment with 18 Professional and 7 Limited users typically lands around A$70,000 in year-one licence plus A$12,000–A$15,000 in annual maintenance. The same 25 users on Odoo Custom is A$7,080 per year. Over five years, including version upgrades and integration drift, the gap usually widens to a factor of six or seven.
The shared-login problem
We’ve seen it repeatedly: a Perth-based industrial supplies wholesaler we worked with had been on SAP Business One for seven years. Their three named users had quietly grown to twelve people sharing logins — a licensing risk and an audit-trail nightmare. We migrated them to Odoo Custom for less than what SAP B1 was costing them in licence and partner support each year combined, and gave each warehouse picker a real login.
Hidden line items
Watch for SAP B1’s third-party connector costs (most CRM, eCommerce or shipping integrations come from the partner ecosystem at extra licence), HANA database licensing if you go that route, and the fact that minor warehouse or workflow changes are partner-billable in a way Studio configuration is not.
Implementation time and approach
A typical Australian SAP Business One implementation runs 16 to 32 weeks from kickoff to go-live for a multi-module rollout. A comparable Odoo implementation runs 8 to 20 weeks. The gap is real and structural, not partner bias.
Two reasons. First, SAP B1 customisation typically requires partner-led development against the SDK; Odoo Studio lets a configured admin reshape forms, fields and workflows in the browser. Second, Odoo’s annual release cadence means newer modules ship complete rather than as partner add-ons — Australian Peppol e-invoicing, for instance, is native in Odoo and partner-built in SAP B1.
In both cases the data migration is the real critical path, not the configuration. Bad opening balances, broken supplier records or unclean customer hierarchies will sink either platform. We sequence go-lives around BAS quarters and STP Phase 2 pay cycles regardless of which ERP is underneath.
Customisation and flexibility
SAP Business One is customisable through User Defined Fields, the SAP B1 Studio designer, and the SDK for deeper work. It’s capable, but most changes pass through a partner consultant with developer access. Quotes for routine changes — a new approval rule, a different stock valuation view, a custom warehouse picker layout — are commonly four to six weeks.
Odoo’s customisation surface is wider. Studio handles model, view and automation changes without code. The Python framework underneath handles anything Studio can’t. The practical effect for an Australian operator is a faster feedback loop: a change identified in a Tuesday review is often live in test by Thursday and in production the following week.
A word of caution: easier customisation is not always good customisation. We’ve inherited Odoo environments where five years of unchecked Studio changes had left the database half-bespoke and impossible to upgrade. The discipline is the same as with SAP B1 — every customisation should earn its keep, and standard processes should be defended unless there’s a real business reason to deviate.
Australian compliance: GST, BAS, STP Phase 2, Peppol
This is where Odoo’s Australian localisation has caught up and, in places, overtaken SAP B1.
GST and BAS
Odoo ships native GST tax codes and a configurable BAS worksheet that maps directly to the ATO labels. SAP Business One handles GST cleanly enough but the BAS report is usually a partner-localised add-on. Both work; only one is included.
STP Phase 2
Odoo’s Australian payroll module supports STP Phase 2 reporting to the ATO. SAP B1 does not include native Australian payroll — most SAP B1 customers in Australia pair it with Employment Hero, KeyPay or a standalone product. We often recommend that pairing for Odoo as well at scale, but the baseline is there.
Peppol BIS Billing 3.0
Odoo ships native Peppol BIS Billing 3.0 for the Australian network, registered through the ATO’s framework. SAP B1 requires a partner connector for the same outcome. With Treasury’s mandate timeline tightening on e-invoicing, this is no longer a nice-to-have.
ABA payment files and TPAR
Both platforms produce ABA files for ANZ, NAB, CBA and Westpac. TPAR is native in Odoo’s Australian localisation; in SAP B1 it’s typically a partner module. Neither difference is a deal-breaker on its own, but the cumulative effect of partner-supplied localisation is real recurring cost.
Industry fit — where each platform actually wins
Both platforms are general-purpose. Their relative strength sits in different industries.
SAP Business One historically wins in discrete manufacturing with complex routings, electronics assembly, automotive supply, regulated medical devices and businesses already inside an SAP corporate supply chain. The SAP brand still opens doors in enterprise procurement.
Odoo wins in mixed-mode manufacturing, wholesale and distribution, professional services, construction and trades, field service, multi-channel retail and any business that needs an integrated stack rather than a finance core plus bolt-ons. For Australian manufacturers in particular, Odoo’s manufacturing MRP handles BOMs, work orders and shop-floor tablets without the per-module licence drag.
The honest rule of thumb: if your competitors are running SAP and your suppliers expect EDI integration with named SAP modules, SAP B1 has a real advantage. If you’re shaping your own operating model and want flexibility, Odoo’s is the better starting position.
When SAP Business One actually beats Odoo
There are real cases. Pretending otherwise would be brochure-writing.
If you are a tier-two automotive or aerospace supplier where SAP S/4HANA is the customer’s required system of record, SAP B1 gives you a clean upgrade path into the SAP enterprise stack. If you run regulated process manufacturing — chemicals, pharmaceuticals, food safety with strict batch genealogy — the SAP B1 process-industry modules are deeper than Odoo’s standard manufacturing apps, and the validation history is longer. If your CFO has spent fifteen years inside SAP and you need finance-led adoption, the change-management argument for SAP B1 has weight even when feature-for-feature Odoo would win.
We’ve also seen the SAP B1 decision win on hosting and security posture. Some Australian government suppliers and defence-adjacent businesses face procurement frameworks that explicitly recognise SAP. Odoo’s on-premise option and AWS Sydney hosting can usually meet the same requirements, but the paperwork is heavier.
What we’d push back on: choosing SAP B1 purely because it’s “the safe choice”. In 2026, with Odoo running 8 million users globally and a mature Australian partner network, that argument has more nostalgia than substance.
The Australian partner ecosystem reality
This is the question most buyers should ask first and usually ask last.
SAP Business One has a smaller, more concentrated partner network in Australia — perhaps a dozen serious implementers nationally. Day rates run A$1,800 to A$2,500. The partners know SAP, but their bench is shallow and your project sits in a queue. Switching partners mid-project is harder than it should be.
Odoo’s Australian partner network is broader — Sydney, Melbourne, Brisbane, Perth, Adelaide all have multiple accredited firms. Day rates are A$1,500 to A$2,200. The talent pool is deeper because Odoo’s open-source heritage means developers can learn the platform without a vendor gate. The downside: quality varies more, and the bottom of the market is full of bodyshops selling cheap configuration that won’t survive an upgrade.
For an Australian business choosing between the two, the question is less “which platform” and more “which partner”. A great SAP B1 partner will outperform an average Odoo partner. The reverse is also true. Our advice is the same regardless of platform: ask to see two reference clients in your industry, ask how they handle Australian compliance changes, and ask what their version upgrade record looks like over the past three years.
Scalability and the upgrade path
SAP Business One scales cleanly to about 200 users and then starts straining. Beyond that, SAP’s upsell path is S/4HANA — a different product, a different price band, and effectively a re-implementation. Some Australian businesses make that jump; most don’t.
Odoo scales from five users to five thousand on the same codebase. We have Australian clients on Odoo Custom at 12 users and at 480 users running the same architecture. The upgrade path is annual version upgrades on Odoo.sh, which we typically plan into the Q3 lull between BAS quarters. Studio customisations need a review at each upgrade; well-written custom modules carry forward.
For an Australian SME planning a five-year horizon, the upgrade story matters as much as the day-one fit. Re-platforming costs roughly what the original implementation cost. Avoiding it is worth real money.
If you’re weighing this decision, our Odoo implementation cost guide covers the partner-fee structure in detail, and our implementation timeline article lays out the phases. If you’re also looking at the upper end of the market, the Odoo vs NetSuite comparison is the natural next read. For the compliance side, we’ve written separately about Peppol e-invoicing in Odoo.
The platform decision is the visible question. The partner and method decision is the one that determines whether the project succeeds — for either Odoo or SAP Business One. If you’d like a frank conversation about which way your business actually leans, we run short scoping sessions with no obligation. You can reach us through our contact section, or read more about our implementation method first.
Frequently asked.
What is better, Odoo or SAP?
Neither is universally better. For Australian SMEs under 100 users, Odoo usually wins on cost, customisation speed and Australian localisation. For businesses with deep process manufacturing, complex multi-entity consolidations or an existing SAP investment, SAP Business One can be the right call. The decision is rarely about features and almost always about partner fit and total cost of ownership.
Is SAP Business One obsolete?
No. SAP Business One is actively developed and SAP issues regular patches. The HANA database migration is years done. That said, the user interface, per-named-user pricing model and customisation approach feel dated compared with Odoo, NetSuite and Dynamics 365 Business Central. That's why SAP B1 renewal conversations in Australia increasingly turn into selection projects rather than tick-and-flick renewals.
What is the disadvantage of using Odoo?
Breadth means complexity. Odoo covers more business processes than most teams use, so an undisciplined implementation can feel overwhelming. Annual version upgrades need planning. Deep modern award payroll is better paired with Employment Hero. Implemented carefully, with scope sequenced module by module, none of this is disqualifying for an Australian SME.
Is Odoo used in Australia?
Yes. Odoo has a Sydney office, accredited partners across Perth, Melbourne, Brisbane and Adelaide, and an Australian localisation that covers GST, BAS, STP Phase 2, Peppol BIS Billing 3.0, ABA payment files and TPAR. Odoo runs in AWS Sydney and Azure Australia regions, so data residency for compliance-sensitive industries is straightforward.
What are the disadvantages of Odoo?
Beyond breadth and upgrade discipline, the partner you choose drives outcomes more than the platform. A poor implementation produces a cluttered Odoo that staff resist. Studio makes change easy, which means scope discipline matters. We address these by sequencing modules, training internal champions and avoiding bespoke code where configuration will do.
Is SAP buying Odoo?
No. SAP SE and Odoo S.A. are independent companies. Odoo is privately held and based in Belgium; SAP is publicly listed and based in Germany. Acquisition rumours surface around any high-growth ERP vendor, but as of 2026 there is no transaction or formal partnership between them.