In this guide · 7 sections
Short answer
Choose Xero if you mainly need invoicing, bills, bank feeds and GST, with a few connected apps for stock or POS. Consider Odoo if stock, manufacturing, sales and accounting must share one system and you can invest weeks of set-up and an owner. Most small service businesses don't need an ERP.
Odoo vs Xero at a glance
They answer different questions. Xero asks "how do we keep clean books?"; Odoo asks "how do we run sales, stock, production and books in one place?"
Xero
Accounting softwareFrom S$42/mo per organisation (from 1 Nov 2026)
- Invoices, bills, bank feeds, GST returns
- Priced per organisation, not per user
- Large app marketplace for stock, POS and payroll
- Quick to set up with an accountant
Best for: Service businesses and simple trading companies.
Odoo
ERP suiteOne app free; Standard US$16.90/user/mo yearly
- Accounting plus inventory, manufacturing, POS, CRM, HR
- One database for all modules
- Priced per user for all apps
- Needs configuration, data import and training
Best for: Product businesses where stock and production drive the numbers.
If you're choosing between accounting packages only, our comparison of Xero and QuickBooks in Singapore is the better starting point.
Pricing compared (as of October 2026)
Odoo prices are from its Singapore pricing page, shown in US dollars. Xero prices are from its Singapore pricing update, in Singapore dollars including GST, effective 1 November 2026. Xero's Singapore site says you can add unlimited users for free on any plan.
| Plan | Price | What you get |
|---|---|---|
| Odoo One App Free | US$0 | One app (and the apps it depends on), unlimited users |
| Odoo Standard | US$16.90/user/mo yearly; US$21.10 monthly | All apps, hosted on Odoo Online |
| Odoo Custom | US$32.00/user/mo yearly; US$40.00 monthly | All apps plus Studio, multi-company, external API |
| Xero Starter | S$42/mo | Quotes, 20 invoices and 5 bills a month |
| Xero Standard | S$77/mo | Unlimited invoices and bills |
| Xero Premium | S$99/mo | Adds multiple currencies |
Our Xero price increase guide has the full old and new Xero prices.
When an ERP like Odoo actually helps
An ERP earns its keep when operations, not bookkeeping, are the bottleneck:
Odoo tends to pay off when
- You hold real stock across locations and need accurate cost of goods
- You manufacture or assemble, with bills of materials and work orders
- Sales, purchasing, stock and invoicing are re-typed between systems today
- Several people need different roles in one system (sales, warehouse, finance)
It mostly adds admin when
- You sell services and track time, not stock
- Stock is simple and already handled by your POS or online store
- Nobody can own the system, maintain settings and train staff
- Your accountant works only in Xero or QuickBooks
A rough test: if most of your problems are about books, Xero is enough. If most are about stock and orders not matching the books, an ERP is worth evaluating.
The middle path: Xero plus add-ons
Many growing SMEs keep Xero as the ledger and connect specialist apps for what Xero doesn't do well: an inventory app, a POS, an e-commerce store and payroll. Each syncs summaries or invoices into Xero.
- Pros: each tool is good at its job, your accountant stays in Xero, and you can swap one tool without replacing everything.
- Cons: several subscriptions, several logins, and sync errors to watch, especially product and tax mapping.
- Tipping point: when you have four or five apps all trying to share stock and order data, one system starts to look cheaper than keeping them in sync.
If no off-the-shelf ERP fits the way you work, a custom system built around your process is the other option; our guide to custom software costs in Singapore gives realistic budgets.
Do it yourself or get help?
Setting up Xero for a small business is manageable with your accountant's chart of accounts. An Odoo roll-out across sales, stock and accounting usually needs an experienced implementer and a named owner inside the business.
Our Accounting Software Setup (S$490) helps you choose between Xero, QuickBooks Online and Zoho Books, sets up the organisation in your name with bank feeds for up to 2 accounts, branded invoices and quotes, and up to 5 users with your accountant invited. If your processes need one connected system, our Custom Business App (from S$4,900) builds modules such as quotes, orders, stock and invoices on one database, connected to Xero, QuickBooks or Zoho Books.
Frequently asked questions
They do different jobs. Xero is accounting software and is usually simpler and quicker for invoices, bills, bank reconciliation and GST. Odoo is an ERP that combines accounting with inventory, manufacturing, POS and more. Odoo is better when stock and operations must live in the same system as the books; otherwise Xero is usually enough.
Odoo's Singapore pricing page shows prices in US dollars. As of October 2026, One App Free costs nothing for a single app with unlimited users; Standard is US$16.90 per user a month billed yearly or US$21.10 monthly; Custom is US$32.00 yearly or US$40.00 monthly. First-year discounts and implementation fees can change the total.
Odoo has its own accounting app, so it can replace Xero if you move everything into Odoo. Check with your accountant first: some prefer to work in Xero or QuickBooks, and you need to confirm Singapore GST reporting and InvoiceNow support for your set-up. Some businesses run Odoo for operations and sync to Xero instead.
No. Xero's Singapore plans are priced per organisation, so adding staff or your accountant doesn't add to the subscription. Odoo's paid plans are priced per user, which matters as your team grows. Add-on apps connected to Xero, such as inventory or POS tools, often have their own per-user or per-location fees.
Usually when stock, orders and production create most of the problems: inventory that doesn't match the books, the same order typed into three systems, or no clear cost of goods. Service businesses and simple traders rarely need one. Start by listing what gets re-typed between systems each week; that shows whether an ERP would save real time.