ERP NZ: The Complete Guide for New Zealand Businesses

No. Xero is accounting software — it does invoicing, GST, payroll and basic stock tracking very well. An ERP runs the whole business: orders, inventory across locations, warehouse picking, dispatch, returns, manufacturing and procurement. Xero stops where operations begin. Most NZ businesses pair Xero with an ERP layer rather than replace it — the accountant keeps Xero, the ops team gets a real system.

NetSuite, SAP Business One, MYOB Acumatica (formerly MYOB Advanced), Microsoft Dynamics 365 Business Central and Odoo dominate the upper-mid market. For SMBs the choice is usually between bolting inventory tools onto Xero (Unleashed, Cin7, DEAR / Cin7 Core) and stepping up to a modular ERP like OpsUI. The "best" depends on order volume, channel mix, warehouse complexity and whether you need NZ-built courier integrations out of the box.

No. SAP is one specific ERP vendor — historically the largest, originally aimed at large enterprises. ERP is the category. SAP, NetSuite, Oracle, Microsoft Dynamics and OpsUI are all ERPs; SAP is one brand within that category. Calling all ERP "SAP" is like calling all search "Google" — common shorthand, technically wrong.

An ERP is the single system that connects the parts of a business that share data — orders, inventory, purchasing, shipping, finance, sometimes manufacturing and HR. Instead of four disconnected tools passing CSVs around, an ERP keeps one record of every customer, product and transaction. The practical payoff is fewer reconciliation jobs, accurate stock, faster dispatch, and reporting that does not need a spreadsheet to assemble.

Traditional ERP in NZ runs $20,000–$100,000+ to implement and $2,000–$10,000+ per month once live. Modular ERPs are dramatically cheaper — OpsUI starts at NZ$299/mo per module, NZ$499/mo for starter packs, and an unlimited-user Enterprise tier when you need every module. Setup fees are usually negligible because the work is scoped to one or two modules, not a multi-quarter rollout. The interactive calculator at /tools/erp-cost-calculator shows year 1, year 3 and year 5 totals across NetSuite, MYOB Acumatica, Cin7 Core, Unleashed, Katana, Odoo and OpsUI for your industry, order volume and headcount.

There is no single best — it depends on order volume, channel mix, and whether you need to keep Xero or MYOB. For under ~500 orders a month: an inventory add-on (Unleashed, Cin7 Core) on top of Xero is usually enough. From 500 to 5,000 orders a month: a modular ERP like OpsUI gives you warehouse, dispatch, returns and reporting without replacing Xero. Above that, or with complex manufacturing: NetSuite, MYOB Acumatica, Acumatica or Microsoft Dynamics 365 Business Central. We list specific pricing on /pricing rather than hiding it behind a sales pipeline.

The cheapest real ERP for NZ SMBs is modular and per-module. OpsUI single modules start at NZ$299/mo with five users included; starter packs start at NZ$499/mo. Odoo Community is free as open source but requires self-hosting and a developer; Odoo Online starts around NZ$30/user/mo for the first app but adds rapidly with more apps. Anything quoted under NZ$1,000/mo from a "full ERP" vendor in NZ is almost certainly inventory software, not ERP — read the module list carefully.

Pure inventory software (Unleashed, Cin7 Core, DEAR, Katana light) handles stock counts, basic BOMs and Xero/MYOB sync. You need a real ERP when operations span beyond stock — picking workflows, dispatch routing, returns disposition, CRM, project costing, multi-location finance reporting. The honest test: if you can list every operational pain point as "we cannot see / track / move stock", inventory software is enough. If the list includes "we cannot see what the team is doing", "we cannot tie purchasing to projects", or "we are running three disconnected tools", you have outgrown inventory and need an ERP layer.