How Long Does ERP Integration Take?

Realistic timelines for connecting an ERP to your e-commerce, CRM or custom software, what drives the schedule, and how we delivered a full integration in six weeks.

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Quick answer

A focused ERP integration covering products, stock, pricing and orders typically takes 4 to 8 weeks. More complex projects, with multiple systems, customer-specific B2B pricing, credit accounts or data migration, usually run 2 to 4 months. The timeline depends mainly on how many systems are involved, how clean the data is, and how much custom business logic needs mapping. We have delivered a complete real-time integration in six weeks where the scope was kept tight.

Typical Timelines

  • Focused integration: 4 to 8 weeks. One e-commerce platform or app connected to one ERP, syncing products, stock, pricing and orders.
  • Complex integration: 2 to 4 months. Multiple systems, B2B customer-specific pricing, credit accounts, invoices and document sync, or significant data migration.
  • Large programme: 4 months and up. Several channels and partner feeds, phased rollout, or an ERP migration happening at the same time.

What Drives the Timeline

  • Number of systems: each system added is another set of data, rules and edge cases to handle.
  • Data quality: clean, well-structured data is fast; inconsistent or duplicated data slows everything down.
  • Business logic: simple field mapping is quick; complex pricing tiers and approval rules take longer to model.
  • API access: a documented, capable ERP API speeds delivery; limited or undocumented access adds work.
  • Decision speed: quick answers on edge cases keep the project moving.

The Phases

1
Discovery (1 to 2 weeks)

Map the systems, data and rules, and agree exactly what syncs in which direction.

2
Build (2 to 8 weeks)

Develop the middleware and connectors, with queued, idempotent sync and validation.

3
Test (1 to 2 weeks)

Run real data through staging, check edge cases, and reconcile both systems.

4
Go-live (days)

Cut over with a rollback plan, then monitor closely for the first weeks.

A Six-Week Example

For a UK logistics SME we connected warehouse, accounting and CRM systems with a real-time integration layer in six weeks, cutting order-processing time by 65% with ROI inside six months. Read the warehouse ERP integration case study, or the technical detail in from kick-off to live in six weeks. For how it all fits together, see our guide on how ERP integration works.

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Related

Frequently Asked Questions

A focused ERP integration covering products, stock, pricing and orders typically takes 4 to 8 weeks. Complex projects with multiple systems, customer-specific pricing, credit accounts or data migration usually run 2 to 4 months.

With a tight, well-defined scope and good API access, a complete real-time integration can be delivered in around six weeks. We did exactly this for a UK logistics SME, cutting order-processing time by 65%.

The main factors are the number of systems involved, the quality of the data, the complexity of business logic such as pricing tiers and approvals, how good the ERP API is, and how quickly decisions are made on edge cases.

It should not. Development and testing happen in staging, go-live is planned with a rollback option, and the cutover is often scheduled for a quieter period, followed by close monitoring.

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